Contribution of land use/land cover changes to CO2 emissions across Köppen classified climatic zones in South Asia (India)

Forest and wood land ecosystems in Tanzania occupy more than 45% of the land area, more than two thirds of which made up of the Miombo woodland. The main form of land use in the Miombo region has long been shifting and small-scale sedentary cultivation. The lack of infrastructure and prevalence of deadly diseases such as malaria and trypanosiomiasis have long limited extensive clearance for cultivation, livestock farming and settlements. However, due to positives changes in the socio-economical, political and technological setup in miombo region, the types and intensity of land use are now changing. This paper discusses preliminary results from a study conducted with the aim of contributing to the understanding of dynamics of land cover and use changes in miombo woodlands of eastern Tanzania. The study area comprises four villages around the “Kitulangalo Forest Reserve”, 140 km west of Dar es Salaam on either side of the Morogoro-Dar es Salaam highway. Landsat MSS satellite images of July 1975, Landsat TM satellite images of July 2000 were used to assess land cover changes between 1975 and 2000. Participatory Rural Appraisal (PRA), questionnaire survey and checklists for key informants were the major methods used for collecting socio-economic data. The land cover/use class of woodland with scattered cultivation has recorded the highest percentage of change between July 1975 and July 2000. While all other classes have registered positive changes, only the closed woodland class has had negative change meaning that this class has been decreasing in favour of other land cover/use classes. Recent land cover and use changes are drastic in the study area. These changes have been triggered largely by varied factors including mainly increased population density and subsequent economic activities. Economic activities including charcoal business, shifting cultivation, opening up of improved highway and pastoralism in the study area have greatly contributed to deforestation and woodland degradation. In light of these findings, there is need for: (1) Adequate land use planning and survey of village lands so as to avoid exacerbation of land use conflict and environmental degradation in the study area. (2) Agrarian reforms to eliminate open access regimes to natural resources. (3) Enforcement of fiscal policies related to the extraction of natural resource products such as timber and charcoal so as to reduce pressure on woodlands. Keywords: land use – cover change – Kitulangalo – miombo woodlands

Exploring the relationship between new-type urbanization and sustainable urban land use: Evidence from prefecture-level cities in China

Achieving sustainable land use is one of the most important ways to achieve regional socio-economic sustainable development. We have collected 12 papers in this special issue “Sustainable Land Use in China” to show the varied application of sustainable land use studies and to provide meaningful decision-making information and policy implications for land use planners. We summarize the contributions to this special issue on sustainable land use and place them in perspective. Several studies focus on sustainable urban land use, some focus on sustainable rural land use, and others on environmental issues on land use. These studies have analyzed a broad array of topics related to land use, including the dynamic changes and driving forces of land use spatial patterns, sustainable land use, land use policy and optimization, and the environmental problems related to certain types of land use.

The issue of ensuring the sustainable development of mankind today is recognized as one of the most pressing issues facing society. The purpose of the study is to generalize the features of sustainable land using, identify the main problems of sustainable use of agricultural land in Ukraine and the key ways to solve them. The paper summarizes the key stages of the formation of prerequisites for sustainable land using, systematizes documents and events to create a model of sustainable development, highlights the basic principles and goals of sustainable agricultural land use, in accordance with the concept of sustainable development. The authors emphasize that the practical implementation of the concept of sustainable agricultural land use requires prioritization of agricultural land, especially environmental, as well as increasing the responsibility of agricultural businesses for disturbing the ecological balance and excessive anthropogenic pressure on land resources. It is noted that in Ukraine there is an irrational structure of land use, which is environmentally dangerous. The main problems of sustainable agricultural land use development are highlighted. The authors note that in recent years in Ukraine there have been negative trends in the development of processes that significantly affect agricultural land use. The most acute environmental problems are the development of degradation processes in the arable lands of Ukraine, which are continuous, regional or local in nature. The authors argue that the decline in the natural potential of agricultural land in Ukraine is becoming an even more serious threat to the sustainable development of land use than environmental problems. The priority directions of development of sustainable land use in Ukraine are offered, which will allow passing to the model of sustainable agricultural land use.

Exploration of microbial signature and carbon footprints of the Nilgiri Hill Region in the Western Ghats global biodiversity hotspot of India

AN ASSESSMENT OF SPATIAL VARIATION OF LAND SURFACE CHARACTERISTICS OF MINNA, NIGER STATE NIGERIA FOR SUSTAINABLE URBANIZATION USING GEOSPATIAL TECHNIQUES

Evaluation of sustainability is the core of research on sustainable land use. To a certain extent, traditional social, economic and ecological evaluation for sustainable land use can be regarded as an appraisal on the temporal scale without evaluation of spatial patterns. Landscape ecology can help to realize spatial evaluation for sustainable land use. In this paper, we construct landscape ecological indicators for evaluating sustainable coastal land use from the aspects of landscape productivity, threats and stability, to realize a synthetic temporal-spatial evaluation. These cover the five pillars of sustainable land use, i.e. productivity, security, protection, viability and acceptability. The results of applying landscape ecological evaluation to a case study in Wudi County in China show that land use sustainability is somewhat low and there are great regional differences between its 11 villages. We classified the 11 villages into 5 grades: strong sustainable land use, sustainable land use, weak sustainable land use, weak unsustainable land use, and strong unsustainable land use. Each grade has different land use characteristics and differs in the counter-measures required. But the core countermeasures in all the grades are to improve landscape productivity, to reduce human threats and to optimize landscape patterns.

BackgroundShort rotation coppices (SRC) offer a chance to enhance sustainable biomass production and to enlarge domestic wood resources. On arable land, SRC are less competitive in many regions compared to cropping systems and thus farmers are interested to establish SRC on grassland. This change of land use is discussed controversially because of the associated effects on the carbon-sequestering ecosystem grassland. In this paper, land use changes will be analyzed in reference to sustainability objectives, including aspects of land use competition with food and energy production or the preservation of biodiversity.MethodsThe Integrative Sustainability Concept has been adapted and applied to identify the relevant sustainability objectives using a holistic approach in order to assess the potential for the change in sustainable land use towards an expanded supply of lignocellulose-based bioenergy.ResultsA set of sustainability criteria with a special focus on the change in land use from grassland to SRC has been developed and discussed. For selected criteria, adequate sustainability indicators have been chosen and applied to a case study of the state of Baden-Wuerttemberg in Germany. The indicators have been implemented by performing a spatial differentiated bottom-up assessment using GIS-based data. The results revealed that around 13% of the grassland could be converted into SRC without harming the considered sustainability criteria.ConclusionsThe exploitation of the assessed potential for the change in sustainable land use from grassland to SRC could contribute to decentralize renewable energy supply, local employment and income. With regard to the economic values otherwise lost-, it is recommended not to set grassland conservation as an area-wide imperative. Instead strategies to direct the establishment of SRC to the most suitable areas and technologies should be developed realizing that land use transformation will be performed in a minimal invasive way to ensure compliance with the environment and climate protection.

Currently, the problems of sustainable and rational land use are becoming relevant in most countries of the world. Ukraine is no exception. And these issues have become extremely urgent as a result of russia’s full-scale invasion of Ukraine. In view of this, the purpose of the article is to study and summarize the international experience in the development of the system of sustainable and rational land use; identification of modern problems of land use in the conditions of the legal regime of martial law in Ukraine and ways to solve them. To achieve this purpose, the following general scientific methods were used: analysis and synthesis, induction and deduction, component analysis, comparison, analogy, classification, statistical analysis, expert survey, bibliometric analysis, trend analysis (using the Google Trends), structural and logical generalization. A bibliometric and trend analysis of the relationship between the terms «sustainable land use» and «rational land use» is carried out. On the basis of the study and generalization of international experience, specific features and differences in the development of the system of sustainable land use in some countries of the world have been identified. A statistical analysis of indicators of land use development in Ukraine in the pre-wartime period is carried out. The problems, threats and risks of land use associated with hostilities on the territory of Ukraine are identified. The experience of implementing national land restoration policies by countries affected by hostilities is analyzed. It is determined that the current economic conditions in Ukraine require the creation of appropriate institutional conditions and the improvement of mechanisms for ensuring sustainable land use, taking into account the specifics of wartime. As a result of the study, it is proved that in order to ensure sustainable and rational land use in Ukraine, taking into account the best world practices that are used in most countries of the world, it is necessary to develop a set of provisions and recommendations of a theoretical, methodological and practical nature.

Aim of the studyThe purpose of the study is to consider the issue of sustainable land use in Ukraine, taking into account the consequences of the war. The legal definition of sustainable land use is currently not sufficiently justified and balanced. In Ukraine today, the paradigm of sustainable (balanced) land use is still being formed, and the Land Policy Strategy for the management of land resources and land use should be based on it.Material and methodsThe method of analysis is used to determine the possibilities of a more rapid development of the socially oriented market economy after the war. This can happen thanks to the deepening of the theoretical foundations of the rational use of land resources (the synthesis method), optimization of the economic, social and ecological components of land use (deduction method), which in turn will contribute to increasing the socio - economic efficiency of the use and reproduction of the productive potential of Ukraine's lands in the post-war period (system approach).Results and conclusionsIt was determined that sustainable (balanced) land use should be understood as a system of organizing the use and protection of land and other natural resources and biodiversity and corresponding land relations corresponding to the relations of social development, in which the optimal relationship between social, ecological and economic factors of land use development is achieved. The essence of the research component of the institutionalization of balanced land use is disclosed. A paradigm of views on sustainable land use is formulated, taking into account the consequences of the war in Ukraine.

West African basins play a vital role in the socio-economic development of the region. They are mostly trans-boundary and sources of different land use practices. This work attempts to assess the spatio-temporal land use and land cover changes over three South Western African basins (Volta, Mono and Sassandra basins) and their influence on discharge. The land use and land cover maps of each basin were developed for 1988, 2002 and 2016. The results show that all the studied basins present an increase in water bodies, built-up, agricultural land and a decline in vegetative areas. These increases in water bodies and land use are as a result of an increase in small reservoirs, of dugouts and of dam constructions. However, the decline in some vegetative clusters could be attributed to the demographic and socio-economic growth as expressed by the expansion of agriculture and urbanization. The basic statistical analysis of precipitation and discharge data reveals that the mean annual discharge varies much more than the total annual precipitation at the three basins. For instance, in the entire Volta basin, the annual precipitation coefficient of variation (CV) is 10% while the annual discharge CV of Nawuni, Saboba and Bui are 43.6%, 36.51% and 47.43%, respectively. In Mono basin, the annual precipitation CV is 11.5% while the Nangbeto and Athieme annual discharge CV are 37.15% and 46.60%, respectively. The annual precipitation CV in Sassandra basin is 7.64% while the annual discharge CV of Soubre and Dakpadou are 29.41% and 37%, respectively. The discharge varies at least three times much more than the precipitation in the studied basins. The same conclusion was found for all months except the driest months (December and January). We showed that this great variation in discharge is mainly due to land use and land cover changes. Beside the hydrological modification of the land use and land cover changes, the climate of the region as well as the water quality and availability and the hydropower generation may be impacted by these changes in land surfaces conditions. Therefore, these impacts should be further assessed to implement appropriate climate services and measures for a sustainable land use and water management.

The study aimed to assess the changes that have occurred in land use and land cover within the Maasai Mara landscape using remote sensed data from 1997 to 2017; examine the elephant distribution in relation to land use and land cover changes within the Mara landscape and to determine changes in elephant home ranges in relation to Land use and cover changes in the Mara landscape. In examining the land use and land cover changes on the elephant ranges and distribution, an integrated methodological approach was employed in which the changes that have taken place within the study area over a period of 20 years was determined by analysis involving a 10-year changes in land use and land cover using three epochs from 1997, 2007 and 2017 to generate six land use classes. The Maasai Mara Landscape (MML) supports one of the richest wildlife populations remaining on earth but over the last century, has experienced transformation notably through conversion of former rangelands into croplands. Elephants have both temporal and spatial requirements, which if not provided, render them vulnerable to the land-use practices. The study assessed land use and vegetation cover changes that have occurred and their effects on the elephant movements and distribution within the MML using an integrated methodological approach. The analysis revealed changes in land use and land cover classes over a period of 20 years for the three epochs, from 1997, 2007 and 2017. Elephant’s distribution has been restricted to areas of high vegetation densities within specific habitats hence accelerating the rate of habitat destruction and degradation due to their high densities. These changes have drastically reduced forage for elephants necessitating them to travel longer distances out of their home range in search for food. Human beings have caused land use and cover changes which have detrimental impacts on the ecosystem and ecosystem services. The Maasai Mara landscape supports one of the richest wildlife populations remaining on earth but over the last century, it has experienced land transformation notably through conversion of former rangelands used mainly for tourism and production of grains such as wheat. Land outside the national parks and the reserve is important to the future of elephant existence in Kenya. Little is known about how human occupation on these landscapes negatively affects elephants (Loxodonta africana) habitats, movement and ranges. This has been confirmed by the current continuous demarcation/fencing of land in most areas in Narok County. Elephants like other landscape species, have both temporal and spatial requirements, which if not provided, will render them vulnerable to the land use practices of people. The study aimed to assess the changes that have occurred in land use and land cover within the Maasai Mara landscape using remote sensed data from 1997 to 2017; examine the elephant distribution in relation to land use and land cover changes within the Mara landscape and to determine changes in elephant home ranges in relation to Land use and cover changes in the Mara landscape. The paper describes the different changes that have taken place within the MML and how these changes have affected elephant populations, their trend and distribution within the MML. In examining the land use and land cover changes on the elephant ranges and distribution, an integrated methodological approach was employed in which the changes that have taken place within the study area over a period of 20 years was determined by analysis involving a 10-year changes in land use and land cover using three epochs from 1997, 2007 and 2017 to generate six land use classes. The study found out that there were significant changes of various classes across the years. Forest, water and open shrubs coverages decreased from 1997 to 2017. Classification noted a serious problem within the study area of continuous increase of bare ground coverage across the study years. Elephant populations have been increasing within the area .at an annual rate of 2.69%. The animals are distributed all over the landscape. Distribution of elephants has been restricted to high densities within a specific habitat hence accelerating rate of habitat destruction and degradation due to their high densities within a specific habitat. These changes have reduced drastically foliage for elephants thus necessitating them to travel longer distances in search and as a result increases elephant home ranges.

With increasing resource use pressure, land degradation in China has become increasingly severe in the past few decades especially in North West China. The Conversion of Cropland to Forest and Grassland Program (CCFGP), also known as the Grain for Green Program, was formally launched in 2002 to address the land degradation issue. Under the CCFGP, participating farmers are supported by the Government to grow trees and grass on land previously used for annual cropping. With government funding for the CCFGP drawing to an end in 2007, increasing attention amongst the Chinese policy makers, as well as the wider Chinese and international communities, has been devoted to the long-term sustainability of the land use changes triggered by the CCFGP. Question also remains as to whether there are better ways to deliver the anticipated policy outcome. In this thesis, a cost benefit analysis of the CCFGP is conducted to justify government intervention in providing the environmental goods and services through public finance. The potential efficiency gain of the Program is examined, based on which the sustainability of the land use changes under the Program together with the cost-effectiveness of the Program is explored. This partial cost benefit analysis of the CCFGP is conducted over a 20-year time period in the North West Provinces of China. Costs and benefits included in the analysis encompass the welfare impact of the land use changes on agricultural production and the environmental costs and benefits arising from the land use changes under the Program. Due to the limitation of data availability, some components of the environmental benefits and costs of runoff reductions are not included in the analysis. It has been found through this research that the livelihoods of participating farm households are improved by the CCFGP and the Program has positive impact on the social welfare of the local communities. The biophysical changes under the Program bring about both on-site and off-site benefits and costs. While the Program has been found to generate significant non-market environmental values, it also causes economic losses from reduced agricultural production arising from runoff reductions. Overall, the CCFGP improves the social welfare of people across Northern China over a 20-year time period since its implementation. Conclusion is drawn that government intervention through the CCFGP can be justified and the Program should be supported by the Chinese Government. Theoretically the sustainability of the Program can be achieved. However, sustainable land use changes will also depend on the implementation and design of the CCFGP. Future financing of the CCFGP is needed for some areas where the Program is found to decrease the social welfare of the local communities. Finally, there is room for better environmental targeting of the Program to improve the cost-effectiveness of the Program. The institution of an auction mechanism to allocate CCFGP funds more efficiently offers one potential solution.

Reductions in CO2 emissions are essential to support the UK in achieving its net zero policy objective by around mid-century. Both changing climate and land use change (LUC) offer an opportunity to deploy suitable bioenergy crops strategically to enhance energy production and C sequestration to help deliver net zero through capturing atmospheric CO2. Against this background, we applied process-based models to evaluate the extent of net primary productivity (NPP) losses/gains associated with perennial bioenergy crops and to assess their C sequestration potential under changing climate in the upper River Taw observatory catchment in southwest England. In so doing, we also determined whether LUC from permanent grassland to perennial bioenergy crops, considered in this study, can increase the production and C sequestration potential in the study area. The results show that a warming climate positively impacts the production of all crops considered (permanent grassland, Miscanthus and two cultivars of short rotation coppice (SRC) willow). Overall, Miscanthus provides higher aboveground biomass for energy compared to willow and grassland whereas the broadleaf willow cultivar ‘Endurance’ is best suited, among all crops considered, for C sequestration in this environment, and more so in the changing climate. In warmer lowlands, LUC from permanent grassland to Miscanthus and in cooler uplands from permanent grassland to ‘Endurance’, enhances NPP. Colder areas are predicted to benefit more from changing climate in terms of above and belowground biomass for both Miscanthus and willow. The study shows that the above LUC can help augment non-fossil energy production and increase C sequestration potential if C losses from land conversion do not exceed the benefits from LUC. In the wake of a changing climate, aboveground biomass for bioenergy and belowground biomass to enhance carbon sequestration can be managed by the careful selection of bioenergy crops and targeted deployment within certain climatic zones.

Much of literature on the Sahel-savannah region of West Africa centres on whether the region is a degraded version of a former densely wooded landscape and whether it is becoming further desertified. The dominant view of many West African parties to the UN Convention to Combat Desertification asserts that this zone is increasingly being desertified due to climate change and destructive practices of peasant agriculture. Other researchers have challenged this claim and argued that the high climate variability characterising the savannah zone is responsible for fluctuations in vegetation cover. Although recent research supports the latter view, this perspective has been ignored by Ghana’s National Action Plan in favour of the desertification discourse. The Plan also ignores the cumulative effects of colonial and postcolonial government policies and market forces in influencing land use and vegetation changes in the savannah zone. This thesis investigates the changing patterns of land use and land cover changes in the savannah region of northeast Ghana. It adopts a long-term historical perspective for understanding the interactions and combined influences of climate variability, political-economic factors and perceptions of local communities on changes in vegetation cover. It uses archival records, in-depth interviews and social participatory GIS mapping techniques to examine the combined influences of political-economic factors and rainfall variability on vegetation distribution and cropping patterns. The historical analysis shows that pre-colonial traditional knowledge systems were ignored by the colonial authorities who altered the organisation of settlements and agriculture to benefit the interests of colonial enterprise. In the early twentieth century, the colonial government sought to increase agricultural production by imposing strict environmental ‘conservation’ measures on peasants, claiming that these communities had destroyed a previously dense forested region and turned it into a degraded savannah. The postcolonial governments continued to assert this claim against local communities and pushed for agricultural industrialisation to promote economic development. During the 1970s and the early 1980s, the Sahel droughts and bushfires severely affected agricultural production and reduced tree cover in northeast Ghana. This reinforced and institutionalised the prevailing view that traditional farming methods of local peasant communities under severe drought conditions were threatening to turn the savannah into a desert. The long-term rainfall analysis showed high inter-annual and intra-seasonal variability. This variability was reflected in the cropping patterns, areas under cultivation and tree cover. In wetter years, agriculture extended into areas that had developed tree cover, while in drier years, tree cover extended into previously cultivated land. Agriculture and tree cover showed similar variation between the annual wet and dry seasons. The GIS analysis and perception-based mapping also confirmed this variability in seasonal and annual variations in rainfall, showing ‘greening’ and afforestation in some areas and tree cover reduction in other areas. Changes in the government’s agricultural and land management policies were also critical drivers in altering crop and tree cover. Local communities highlighted government policies and market conditions as prime factors influencing their land use decisions, and emphasised that these factors reduced their capacity to respond effectively to the climate fluctuations typical of the Sahel-savannah region. The thesis concludes by showing that northeast Ghana has never been a zone of desertification, but rather a natural savannah zone characterised by high fluctuation in rainfall and vegetation cover both in the short and longer terms. It supports the arguments that high climate variability affects fluctuations in vegetation cover in the savannah zone. In addition, the thesis shows that the long-term influences of colonial and postcolonial government policies and market forces have contributed to greater variability in vegetation cover within this highly variable climatic zone.