Land Allocation Research Articles

Global land and water limits to electrolytic hydrogen production using wind and solar resources

Proposals for achieving net-zero emissions by 2050 include scaling-up electrolytic hydrogen production, however, this poses technical, economic, and environmental challenges. One such challenge is for policymakers to ensure a sustainable future for the environment including freshwater and land resources while facilitating low-carbon hydrogen production using renewable wind and solar energy. We establish a country-by-country reference scenario for hydrogen demand in 2050 and compare it with land and water availability. Our analysis highlights countries that will be constrained by domestic natural resources to achieve electrolytic hydrogen self-sufficiency in a net-zero target. Depending on land allocation for the installation of solar panels or wind turbines, less than 50% of hydrogen demand in 2050 could be met through a local production without land or water scarcity. Our findings identify potential importers and exporters of hydrogen or, conversely, exporters or importers of industries that would rely on electrolytic hydrogen. The abundance of land and water resources in Southern and Central-East Africa, West Africa, South America, Canada, and Australia make these countries potential leaders in hydrogen export.

Balancing food production with climate change mitigation and biodiversity conservation in the Brazilian Amazon

Climate change mitigation and biodiversity conservation are two major environmental actions that need to be effectively performed this century, alongside ensuring food supply for a growing global human population. These three issues are highly interlinked through land management systems. Thus, major global food production regions located in biodiversity hotpots and with potential for carbon sequestration face trade-offs between these valuable land-based ecosystem services. The state of Mato Grosso in Brazil is one such region, where private lands that have been illegally used for agriculture could be restored to natural vegetation – with potential benefits for climate change mitigation and biodiversity conservation, although with potentially negative effects on food production. To address this challenge, in this study we used a multicriteria nexus modeling approach that considers carbon stocks, priority areas for biodiversity conservation, and the opportunity for food production, to develop scenarios of land allocation that aim to balance the benefits and drawbacks of ecosystem restoration. Results show that forcing landowners to restore their individual lands compromises the potential for a “green land market” throughout the Amazon biome in which private landowners with lower food production capacities (e.g., less connected to markets and infrastructure) would benefit from restoration programs that compensate them for the inclusion of environmental restoration among their economic activities, instead of taking large economic risks to produce more food. We additionally highlight that strategic ecosystem restoration can achieve higher gains in biodiversity and carbon with lower costs of restoration actions and with minimal impacts on agriculture. Analyses like ours demonstrate how scenarios of land allocation that simultaneously address climate mitigation and biodiversity conservation through ecosystem restoration, while also minimizing possible impacts on food production, can be sought to move the world towards a sustainable future.

An empirical analysis of US land‐use change under multiple climate change scenarios

AbstractThis study empirically estimates the effects of climate on land‐use change across the conterminous United States and uses the empirical model to simulate the effects of a range of future climate change scenarios on the allocation of land to forestry, agriculture, and development. Ricardian estimation linking climate with the net returns to land production is integrated with a discrete‐choice estimation of plot‐level land‐use change. Comparing projected land‐use changes across scenarios, we find that drier and warmer climate scenarios favor forest land, wetter and cooler climate scenarios favor developed land, and wetter and warmer climate scenarios favor crop lands.

A Rural Land Share Cooperative System for Alleviating the Small, Scattered, and Weak Dilemma in Agricultural Development: The Cases of Tangyue, Zhouchong, and Chongzhou

“Small, scattered and weak”, i.e., small-scale arable land holdings, decentralized operation, and weak effectiveness are common agricultural development problems that most developing countries face. Promoting the moderate-scale operation and modernization development of agriculture under the premise of protecting social stability is a complex and systemic process. In the evolution of China’s agricultural business model and land system reform, the Land Shareholding Cooperative System (LSCS) emerged. However, few studies have focused on the relationship between rural land institution innovation and agricultural economic development. We found great potential in this approach in solving the dilemma of “small, scattered, weak” in agricultural development, while protecting farmers’ land property rights. We described the cases of Tangyue, Zhouchong, and Chongzhou in rural China through the research method to illustrate how this occurred. This approach takes full advantage of the combination of “cooperative” and “shareholding” while alleviating the incompatibility of the historical allocation of arable land with urbanization and agricultural development. Balancing the development of factor markets and protecting the welfare of members contributes to its effective implementation. This study provides valuable examples of agricultural development in similar areas and countries.

Smart city construction and green technology innovation: evidence at China's city level.

In the context of China's economic and social transformation, smart cities are becoming increasingly important for green development. Based on pilot smart cities and panel data from 274 prefecture-level cities in China from 2006 to 2018, this paper mainly evaluates the impact of smart city construction (SCC) on green technology innovation (GTI). To analyze SCC mechanisms and heterogeneity, we used China's smart city pilots as a quasi-natural experiment. In terms of the influencing mechanism, SCC can promote GTI by enhancing the digital economy level. Meanwhile, the optimization allocation of resources, including labor, land, and capital, can effectively foster the promoting effect of SCC on GTI. Moreover, SCC has a spatial diffusion effect;it will not only promote local GTI, but also improve the level of GTI in neighboring cities. In terms of the heterogeneity analysis, smart cities, which present a large scales, rich human capital, and high-level infrastructure, have a strongly positive effect on GTI. This study provides important empirical evidence for the development of SCC and GTI.

The Impact of Land Property Rights on China’s Rural-urban Migration

Due to the historical background of China, the land system in China possesses urban-rural dual characteristics and different land property right compared to other countries. This uniqueness matched China’s land allocation but still evolve throughout the development of the country. In this paper, we will discuss the impact of land property right on China’s rural-urban migration through the government’s angle and the market’s angle with the help of a database from the China Health and Retirement Longitudinal Study (CHARLS) national statistical survey. Further analysis on future policies will also be provided.

Optimal allocation for land in an arid inland basin in northwest China: framework and application based on CLUE-S and MCR models.

Reasonable planning of the limited land resources can promote the coordinated development of social economic and ecological protection. It is very important to optimize the rational distribution of land resources in the arid inland river basin because of the scarce land. In this paper, the GIS technologies of spatial analysis, conversion of land use, and its effects at small regional extent (CLUE-S) and minimum cumulative resistance (MCR) model were used to optimize the land allocation. The ecological security pattern (ESP) was constructed through using MCR model, which included ecological source and resistance surface. The dynamics of land use and spatial optimizing allocation of Shiyang River Basin in 2025 and 2030 was simulated under three different optimization scenarios including farmland protection scenario (FPS), free development scenario (FDS), and ecological security pattern scenario (ESPS). It was found that under ESPS, farmland was reduced, but woodland, grassland, and water body were increased significantly. Under FPS, land for construction was controlled effectively, a large part of homestead was converted into farmland, and the potential of unused land was developed vigorously. Furthermore, the current FDS and macro policy guidance should be comprehensively considered. The ESPS was more suitable for the scientific development of Shiyang River Basin on a long view. The combination of CLUE-S and MCR can effectively improve the optimization methods under ecological process and ecological resistance of landscape elements.

Estimating the allocation of land to business.

This paper is uniquely focused on mapping business land in satellite imagery, with the aim to introduce a standardized approach to estimating how much land in an observed area is allocated to business. Business land and control categories of land are defined and operationalized in a straightforward setting of pixel-based classification. The resultant map as well as information from a sample-based quantification of the map's accuracy are used jointly to estimate business land's total area more precisely. In particular, areas where so-called errors of omission are possibly concentrated are accounted for by post-stratifying the map in an extension of recent advances in remote sensing. In specific, a post-stratum is designed to enclose areas where business activity is co-located. This then enhances the area estimation in a spatially explicit way that is informed by urban and regional economic thought and observation. In demonstrating the methodology, a map for the San Francisco Bay Area metropolitan area is obtained at a producer's accuracy of 0.89 (F1-score = 0.84) or 0.82 to 0.94 when sub-selecting reference sample pixels by confidence in class assignment. Overall, the methodological approach is able to infer the allocation of land to business (in km2 ± 95% C.I.) on a timely and accurate basis. This inter-disciplinary study may offer some fundamental ground for a potentially more refined assessment and understanding of the spatial distribution of production factors as well as the related structure and implications of land use.

A new interval meta-goal programming for sustainable planning of agricultural water-land use nexus

Meta-Goal Programming (MGP) is a simultaneous cognitive evaluation of the degree of achievements for original decision goals considered in a GP model. However, in most real-world situations, environmental coefficients and related parameters are not easily available. In such a situation, the decision-maker must consider various conflicting targets in a framework of uncertain aspiration levels at the same time. On the other side, Interval Programming (IP) is a method used to increase the range of available decision-maker preference structures in GP. In the perspective of solving the conflicts between agriculture and water use towards sustainability, this paper proposes an Interval Meta-Goal Programming Model (IMGPM) dealing with imprecision in data that covers interval coefficients, target intervals, and interval bounds of meta-goals. This novel methodology has been tested in a study area in Iran to validate its added value in solving conflicting uses of natural resources by economic sectors. This integration together with its application for sustainable optimal cropping patterns (agroecosystem planning) represents a novelty in the field of ecological modeling. The management solutions of our method in terms of land allocation are different from those in Sen and Pal (2013) model. In the case of Iran, many socio-ecological-economic strategies and policies should be necessary for improving the agricultural sector. More specifically, on the basis of rainfall amounts and spatial patterns, this approach can represent a decision-support system able to define strategies for additional water storage useful to support crop production. Furthermore, the availability of water together with the sustainable use of fertilizers can mitigate the risk of land degradation, guaranteeing people employment, food security, and economic profits. Although the present methodology seems to solve the problem of multi-goals decision-making, the inclusion of spatial relationships is able to introduce dependencies between the management of land use in adjacent areas, making the present approach nearer to real-world functioning.

Have the new round of agricultural land system reform improved farmers' agricultural inputs in China?

China's modern socialist system completed the registration and certification of farmland ownership and continued to deepen the "separation of powers" reform at the end of 2020. This facilitated the transfer of land management rights and impacted investment in agricultural production. The main aim of this study is to evaluate the impact of the new round of agricultural land system reform on farmers' farm inputs in China's socialist system. The study uses data from the China Labor-force Dynamic Survey (CLDS) and employs various econometric approaches, including the Propensity Score Matching-Difference in Differences (PSM-DID) method to approach the objectives of the study. The results indicate that the new round of agricultural land system reform significantly promotes the increase of farmers' inputs in agriculture, including the area of land transferred in and self-owned, income from agriculture, number of agricultural labors, and specialized agricultural production. The study suggests that the reform enhances the positive impact of land transferred-in on farmers' farm inputs. The impact of agricultural land confirmation and "three rights separation" is positive in eastern, central, and western China. The findings suggest that public authorities should continue to improve the efficiency of land allocation and large-scale operation, cultivate new agricultural operation bodies, and improve the level of agricultural production specialization.

Land scale heterogeneity, collective action and soil erosion control: evidence from the Loess Plateau of China

This paper investigates the effect of land scale heterogeneity on participation by farmers in collective action and the level of erosion control, and its mechanism of action, using survey data from 45 villages and 1,149 households in a typical erosion area of the Yellow River basin. The results show that there is a non-linear, U-shaped relationship between land size heterogeneity and farmers’ participation in collective action and the level of erosion control, respectively, and that collective action plays a mediating role in the U-shaped relationship between land size heterogeneity and level of erosion control. This implies that maintaining a homogeneous distribution of land among households within the village collectivity and a large disparity in land allocation both promote participation in collective action and thus improve the level of erosion control. Using an endogenous regression transformation model to deal with endogeneity and robustness tests, the findings remain robust. In the mechanism analysis section, variables for the level of trust and co-ordination of interests are introduced and a non-linear, U-shaped relationship is found between land size heterogeneity through the effect of both on collective action. This suggests that the allocation of land resources as described above can co-ordinate the level of trust and the direction of interests among farmers, leading to conditions for co-operation and thus facilitating farmers’ participation in collective action.

Perimeter fencing in urban landscapes: A perceptual exploration in a traditional Yoruba settler community

ABSTRACT The prevalent transition from ancient city walls to individualized forms of gated communities and fences elicited this study. This paper examined residents` perceptions and the characteristics of perimeter fencing in a traditional Yoruba settlement. It obtained primary data through the administration of questionnaires among residents of neighbourhoods within the study area. Physical observation aided in the identification of all residential neighbourhoods, which were stratified into three distinct and homogenous zones. One out of every four neighbourhoods in each homogenous zone was purposively selected. A total of 2055 buildings were identified within the selected neighbourhoods. Using systematic sampling, a total of 206 residents in separate dwelling units were selected for the survey. Residents perceived perimeter fencing as a feature for land boundary delineation, crime prevention, ownership and control, as well as privacy. Residential areas with a predominant rate of crime, a feeling of insecurity and disputes on land ownership were likely to witness increased use of perimeter fencing. The study recommends that local planning authorities should develop standards and regulations for perimeter fencing with consideration for the unique socio-cultural context. Improved methods of land allocation and subdivision should be implemented within traditional settlements

Optimization of Crop Harvesting Schedules and Land Allocation Through Linear Programming

Optimization of Crop Harvesting Schedules and Land Allocation Through Linear Programming

Methodological approach for the evaluation and mapping of the agronomic suitability of soils in tropical zones: Case study of the Bambouto volcanic massif (Western Cameroon) and the Bokito district (Central Cameroon)

The main pillar of agriculture is the soil because it is both the support and the reservoir of essential nutrients for the plant. The food function it provides for humanity can only be fully fulfilled if it is balanced. Therefore, the development of sustainable agriculture in the world necessarily requires knowledge of the soil. The evaluation of agronomic suitability consists in determining its intrinsic capacity to sustain agricultural productivity over time. Many studies have been conducted in the domain of agricultural land assessment, but the applicability of the methods used in the tropical context requires adaptations that are not always obvious. The new methodological approach we propose for agronomic suitability assessment(AA) was designed and tested in Cameroon (Central Africa) in two pilot sites chosen in two different agro-ecological zones. The sites were the bimodal forest in Bokito which developed on yellow ferralitic soils, and the highland in the Bambouto volcanic massif which had a great pedological variability ranging from red ferralitic soils to andic ferralitic soils and andosols. The approach is inexpensive and based on the combination of four intrinsic soil parameters, namely acidity (pH), useful water reserve (RU), cation exchange capacity (CEC) and erodibility (K); according to the formula: AA = pH × RU × CEC × K. The unit of measurement is the « equivalent hour per mega joule per millimeter (eq.hr. MJ-1mm-1) ». The results showed that the agronomic suitability of the yellow ferralitic soils of Bokito varies from 0.00 to10.53 eq.hr. MJ-1mm-1. On the volcanic massif of Bambouto, the agronomic aptitude varies from 0.00 to 15.70 eq.hr. MJ-1mm-1 on the red ferralitic soils of the lower part of the massif, from 15.70 to 41.84 eq.hr. MJ-1mm-1 on andic ferralitic soils of the middle part of the massif and reaches 108.85 eq.hr. MJ-1mm-1 on the andosols of the summit part of the massif. This work could allow, on the one hand, a better allocation of agricultural land and thus participate in the development of second generation agriculture in sub-Saharan Africa; and on the other hand, contribute to determine more precisely the quality and quantity of fertilizer needed to maintain soil balance. Controlling the use of fertilizers will help to significantly reduce the quantities of chemical elements contained in agricultural products, limit water and soil pollution and thus better preserve human health.

LEGACY OF THE CONFLICT BETWEEN EUROPEAN AND INDIGENOUS AFRICAN LEGAL CONSTRUCTS OF LAND TENURE IN CONTEMPORARY ZIMBABWE

The study focuses on the undeniable significance of the European legal traditions, brought to former Southern Rhodesia/Rhodesia by European settlers, for the legal status of land tenure in the country, the legacy of which traditions still deeply impacts the situation in present-day Zimbabwe. There are two main aspects of this influence: the aftermath of imposed land division and the prevalence of Western legal traditions in contemporary law. Numerous laws enacted unilaterally by white Rhodesians, most notably the 1930 Land Apportionment Act and the 1951 Native Land Husbandry Act, impacted the land tenure in the region. The indigenous African population was undoubtedly discriminated against by these legal actions: numerous acres of the land were taken by European conquerors and those left were of much lesser value in terms of farming and pasture. After the end of minority rule in Rhodesia in 1980, when Robert Mugabe rose to power, new land policies were imposed and numerous land allocations were awarded to the supporters of his regime in the name of removing racial injustices. The consequence was disastrous: the policy led to the demise of once world-famous agriculture and Zimbabwe became ceaselessly endangered by famine. Furthermore, laws concerning the land tenure and husbandry were (and still are) based on European legal constructs, alien to the native population of Zimbabwe. Indigenous traditions were subsequently ousted by the European law and are significantly absent in Zimbabwe today. Nowadays, after the fall of Mugabe in 2017, the country finds itself in the defining point of its history. The question persists: Can Zimbabweans derive useful values from their past in order to shape a new land policy in their homeland that would be just for all its citizenry?

Appraisal of Procedures and Beneficiaries of Residential Land Allocation in Katsina State, Nigeria

Statutory land allocation is done to ensure equity in the distribution of land resources for the socio-economic development of the citizenry of a state. This paper examines the formal procedure followed in allocating residential land and describes the people that benefited from the allocation in Katsina State within the period 1999 – 2018. The research employed the use of qualitative data on formal procedure of residential land allocation and quantitative data on the number and socio-economic characteristics of the beneficiaries. Primary data were sourced from Katsina State Ministry of Lands and Survey and the state’s Urban and Regional Planning Board through interviews with some officials. Applicants’ files were used to gather socio-economic and demographic data of the beneficiaries. Systematic sampling technique was employed, to select a sample of 374 files. Qualitative data were aggregated, summarized and the formal procedure of land allocation was presented in diagram and narrative forms. Frequencies and percentages were used to analyse the quantitative data. It is found that the procedure for residential land allocation in the area followed eight steps and many paper works are involved in the process. It is observed that there are many delays encountered in the procedure especially at the stage of the issuance of the Certificate of Occupancy. The process is skewed in favour of the politicians and political office holders which received 70 % of the total allocation. It is recommended that the allocation should adequately consider the low-income categories of people. The procedure of land allocation should also be smooth and seamless so as to reduce unnecessary delays. L'attribution légale des terres est faite pour assurer l'équité dans la répartition des ressources foncières pour le éveloppement socio-économique des citoyens d'un État. Cet article examine la procédure formelle suivie pour l'attribution des terres résidentielles et décrit les personnes qui ont bénéficié de l'attribution dans l'État de Katsina au cours de la période 1999 - 2018. La recherche a utilisé des données qualitatives sur la procédure formelle d'attribution des terres résidentielles et des données quantitatives sur le nombre et caractéristiques socio-économiques des bénéficiaires. Les données primaires proviennent du Ministère des Terres et de la Topographie de l'État de Katsina et du Conseil deplanification urbaine et régionale de l'État grâce à des entretiens avec certains responsables. Les dossiers des candidats ont été utilisés pour recueillir les données socio-économiques et démographiques des bénéficiaires. Une technique d'échantillonnage systématique a été utilisée pour sélectionner un échantillon de 374 dossiers. Les données qualitatives ont été agrégées, résumées et la procédure formelle d'attribution des terres a été présentée sous forme de diagramme et de narration. Des fréquences et des pourcentages ont été utilisés pour analyser les données quantitatives. On constate que la procédure d'attribution des terres résidentielles dans la zone a suivi huit étapes et de nombreux travaux sur papiersont impliqués dans le processus. On constate qu'il existe de nombreux retards rencontrés dans la procédure notamment au stade de la délivrance du Certificat d'Occupation. Le processus est biaisé en faveur des politiciens et des titulaires de charges politiques qui ont reçu 70 % de l'allocation totale. Il est recommandé que l'allocation tienne compte de manière adéquate des catégories de personnes à faible revenu. La procédure d'attribution des terres doit également être fluide et transparente afin de réduire les retards inutiles.

Appraisal of Procedures and Beneficiaries of Residential Land Allocation in Katsina State, Nigeria

Statutory land allocation is done to ensure equity in the distribution of land resources for the socio-economic development of the citizenry of a state. This paper examines the formal procedure followed in allocating residential land and describes the people that benefited from the allocation in Katsina State within the period 1999 – 2018. The research employed the use of qualitative data on formal procedure of residential land allocation and quantitative data on the number and socio-economic characteristics of the beneficiaries. Primary data were sourced from Katsina State Ministry of Lands and Survey and the state’s Urban and Regional Planning Board through interviews with some officials. Applicants’ files were used to gather socio-economic and demographic data of the beneficiaries. Systematic sampling technique was employed, to select a sample of 374 files. Qualitative data were aggregated, summarized and the formal procedure of land allocation was presented in diagram and narrative forms. Frequencies and percentages were used to analyse the quantitative data. It is found that the procedure for residential land allocation in the area followed eight steps and many paper works are involved in the process. It is observed that there are many delays encountered in the procedure especially at the stage of the issuance of the Certificate of Occupancy. The process is skewed in favour of the politicians and political office holders which received 70 % of the total allocation. It is recommended that the allocation should adequately consider the low-income categories of people. The procedure of land allocation should also be smooth and seamless so as to reduce unnecessary delays. L'attribution légale des terres est faite pour assurer l'équité dans la répartition des ressources foncières pour le éveloppement socio-économique des citoyens d'un État. Cet article examine la procédure formelle suivie pour l'attribution des terres résidentielles et décrit les personnes qui ont bénéficié de l'attribution dans l'État de Katsina au cours de la période 1999 - 2018. La recherche a utilisé des données qualitatives sur la procédure formelle d'attribution des terres résidentielles et des données quantitatives sur le nombre et caractéristiques socio-économiques des bénéficiaires. Les données primaires proviennent du Ministère des Terres et de la Topographie de l'État de Katsina et du Conseil deplanification urbaine et régionale de l'État grâce à des entretiens avec certains responsables. Les dossiers des candidats ont été utilisés pour recueillir les données socio-économiques et démographiques des bénéficiaires. Une technique d'échantillonnage systématique a été utilisée pour sélectionner un échantillon de 374 dossiers. Les données qualitatives ont été agrégées, résumées et la procédure formelle d'attribution des terres a été présentée sous forme de diagramme et de narration. Des fréquences et des pourcentages ont été utilisés pour analyser les données quantitatives. On constate que la procédure d'attribution des terres résidentielles dans la zone a suivi huit étapes et de nombreux travaux sur papiersont impliqués dans le processus. On constate qu'il existe de nombreux retards rencontrés dans la procédure notamment au stade de la délivrance du Certificat d'Occupation. Le processus est biaisé en faveur des politiciens et des titulaires de charges politiques qui ont reçu 70 % de l'allocation totale. Il est recommandé que l'allocation tienne compte de manière adéquate des catégories de personnes à faible revenu. La procédure d'attribution des terres doit également être fluide et transparente afin de réduire les retards inutiles.

Optimization land use based on multi-scenario simulation of ecosystem service for sustainable landscape planning in a mixed urban - Forest watershed

Integrating ecosystem services (ESs) into land development strategies can provide a new perspective in order to make more informed land use (LULC) decisions. In this sense, a specific framework is provided to use ESs in land allocation in Ilam urban watershed, Western Iran. This region is experiencing unsustainable development and destruction of natural ecosystems and as a result, these conditions have affected ecological characteristics, and ESs. Therefore, characterizing the LULC of this watershed and its impact on ESs is significant to comprehensively understanding the influences of human activities on ecosystems. Hence, the simulated annealing-genetic hybrid algorithm was assessed to optimize LULC using Six types of ESs; including, food provisioning (FP), water yield (WY), sediment retention (SR), recreation quality (RQ), aesthetic quality (AQ) and habitat quality (HQ). Regarding optimization approach, FP, WY, SR, RQ, AQ, HQ and land integration (LI) scenarios were designed based on LULC types and ESs. Considering the land allocation, the results indicated that most changes are related to the northwest, southeast, southwest and middle parts of the region. Moreover, an increasing trend was observed regarding dense forest and low-dense forest, according to the following scenarios: FP, RQ, LI, AQ, WY, SR and HQ. In contrast, a decreasing trend was obtained for cropland in the same order of scenarios. Additionally, the highest areas of garden, grassland, park, river, urban land, and road classes were observed in scenarios HQ, LI, SR, WY and FP, respectively. The results also revealed that the SDR scenario can be regarded as the best one having the lowest LULC fragmentation. Our study indicated that using ESs to optimize LULC allocation is a useful and an important strategy due to the fact that one can consider both the function and the structure of ecosystems in LULC planning and management decisions. Thus, the results of this research can help land managers in order to develop LULC, based on ESs and ecological conditions, which would finally lead to maintain the ESs and achieve sustainable development.

Kebijakan Ketahanan Pangan Pemerintah Daerah Kabupaten Lingga

The purpose of this research is to examine the potential issue of a global recession which has an impact on the potential for a food recession after the pandemic hit Indonesia. In order to make the discussion more focused, this study focuses on the policy and strategy efforts of the local government of Lingga Regency in terms of food security to overcome the food crisis. The research method uses a qualitative approach with research subjects selected using purposive sampling. The research results show that the local government's efforts to realize regional food security are realized by making regional policies to guarantee sustainable agricultural land so that land allotment is only for agriculture to prevent land conversion. This is also to realize agricultural development planning under the 2016-2021 Lingga Regency Regional Medium-Term Development Plan focusing on agricultural development with the Agrominapolitan program, which will continue in the following regional leadership. In the effort to regional food security, the contribution of the community, mainly subsistence farmers, has had a significant impact in supporting food supply for the Lingga district, which so far has been very dependent on food supplies from other regions, so that food shortages have become high, especially during specific climate changes.

ANALISIS PERUBAHAN TUTUPAN LAHAN PADA KOTA PADANG MENGGUNAKAN CITRA SATELIT

Land use change is an important issue for urban and regional planners and policy makers, but it is also very useful in conservation planning, food security, and hydrological modeling. Data, information and analysis tools become obstacles in detecting changes in land use. With increasing access to data and current technology, it is hoped that land use observations can be carried out in a simple way but have more accurate results. This study aimed to analyze land cover changes in Padang City 2018-2022, using Landsat Imagery and Geographic Information System (GIS) analysis. Firstly, observations on ESRI Land Cover which displays a global map of land use or land cover (LULC) derived from ESA Sentinel-2 Imagery at a resolution of 10 m. The results showed that the area of forest cover has decreased and the built-up area has increased in the 2017-2018 and 2021-2022. Secondly, using the EO Browser, namely Sentinel-2, that was done in one to search for and compare images using high resolution at these sources, there were 19 land cover changes, such as increasing residential land use, while forest land allotment decreased.