Land Values Research Articles

The spatial overlay effect of urban waterlogging risk and land use value

Urban waterlogging poses a severe threat to lives and property globally, making it crucial to identify the distribution of urban value and waterlogging risk. Previous research has overlooked the heterogeneity of value and risk in spatial distribution. To identify the overlay effect of urban land value and risk, this study employs the Entropy Weighting Method (EM) to assess urban value, Principal Component Analysis (PCA) to determine waterlogging risk and key areas (RK), local Moran's I (SC) to identify key areas (HK), and finally Bivariate local Moran's I (DC) to comprehensively evaluate urban value and waterlogging risk to delineate key areas (BH). The results indicate that waterlogging risk is primarily influenced by proximity to water systems (PCA coefficient: 0.567), population density (0.550), and rainfall (0.445). There is a positive correlation between urban value and waterlogging risk, with a global Moran's I of 0.536, indicating that areas with higher urban value also face greater waterlogging risk. The DC method improved identification precision, reducing the BH area by 6.42 and 3.51 km2 compared to RK and HK, accounting for 25.50 % and 15.76 % of the RK and HK identified areas, respectively. At present, rescue resources can access less than one-third of the area within 5 min, but with the DC method, during the centennial rainfall scenario, the accessibility rate within 5 min for the BH area reaches 63 %, and all BH key areas can be covered within 15 min. This study provides a new methodology for identifying key areas of waterlogging disasters and can be used to enhance urban rescue efficiency and the precision management of flood disasters.

The effects of subway operation for commercial land values: A case study in Daejeon, South Korea

The introduction of subways has a significant impact on surrounding land values due to increased floating population and improved accessibility. Many studies have sought to determine this change in the land value caused by subway operations. To overcome the limitations of the existing analysis, this study uses i) commercial land value, ii) a multilevel mixed-effects model, and iii) continuous yearly data before and after subway introduction. The study confirms that the land value changed significantly before and after the subway operation. The impact is larger in closer regions, and the rate of price reduction given a 1 m increase in distance to stations is greater. According to this study, the ability to more accurately estimate the indirect effects of introducing subways, such as fluctuations in land values, could contribute to the efficient distribution of transportation infrastructure funding and construction.

Access-based cost-benefit analysis

Current methods of cost-benefit analysis (CBA) for transport investments rely on travel-time savings for potential users. This approach presents a consistent and significant historical trend of forecast inaccuracy, and thus has been questioned and criticized. Access, or the ease of reaching valued destinations, can be used as an alternative. Access features a strong correlation with land value which can be measured through hedonic analysis, and subsequently, access gains offered by a transport initiative can be monetised via property uplift. We test this hypothesis and evaluate Sydney's South West Metro Link (SWML).We first develop linear and semi-log ordinary least square hedonic pricing models for house sales in the Sydney region. The models are set up with structural and neighbourhood attributes in addition to access measures, and result in a statistically significant fit.Next, we model changes to job access induced by the SWML. Benefits are then quantified by land value uplift and are estimated at $1.87 Billion in 2031 and between $1.53–$3.08 Billion in 2061, which reflect base and transit-oriented development (TOD) scenarios. The project is thus feasible should certain land use and economic conditions be met, including TOD to occur about station localities by 2061 and if project costs are minimal. Although limitations are noted, access-based CBA exhibits significant promise as an alternative approach to appraisal and has direct application in value capture strategy.

An Analysis on Land Expropriation, Land Sale and Exemption of the Land Value Increment Tax

An Analysis on Land Expropriation, Land Sale and Exemption of the Land Value Increment Tax

Estimando el efecto del clima en la agricultura con el valor productivo de la tierra agrícola

Objective: the Ricardian model, in which market land values are modeled as a function of climate, has been estimated extensively in the context of developing countries where its core assumptions are likely to fail due to missing or incomplete markets. This article proposes a new measure of land valuation that better reflects agricultural productivity in such contexts: the Productive Value of Agricultural Land (PVAL). Methodology: a three-step empirical strategy is applied to data from a survey of Mexican rural households. The first step is the estimation of an agricultural production function. In the second step, parameter estimates are used to calculate PVAL. In the third step, PVAL is used as the dependent variable in a Ricardian regression. Results: suggests that PVAL increases with more precipitation and decreases with by extreme heat. When the Ricardian regression is estimated using market land values, the positive effect of precipitation is underestimated and the effect of extreme heat on land productivity is null. Limitations: omitted variables bias could still influence the Ricardian estimates obtained using PVAL. Originality: a novel version of the Ricardian model is estimated, one that does not rely on market values of land. Conclusions: failing to account for the market setting of agricultural producers, particularly in developing countries, may lead to an underestimation of the effects of climate change in agricultural productivity.

Assessment of soil fertility in jute (Corchorus olitorius L.) cultivated land and nutritive value of its plant parts

The samples of soil, leaves, and shoots of jute were collected from twenty spots of jute (variety BJRI-Tossa-8) fields from different locations in the Narail district of Bangladesh under AEZ-12 during the year 2022. The study intended to evaluate the soil’s physicochemical properties and nutrient concentrations in jute leaves and shoots of 120 days old plants (at the harvesting time of the plant). The soil pH was neutral to slightly alkaline (6.6 to 7.4), with organic matter content from 1.03 to 1.71%. Electrical conductivity was found non-saline which was 40 to 150 μS/cm at 0 to 15 cm depth. The dominant soil textural class was clay. The total N, P, and S in soils were found to be 0.21 to 0.31%, 0.027 to 0.0283% and 0.0002 to 0.0023%, respectively and available N, P, and S were found to be 0.0058 to 0.0087%, 0.0007 to 0.0018%, and 0.0001 to 0.0006%. The nutritional values of N, P, and S in leaves ranged from 3.00 to 11.75%, 0.2281 to 0.5627%, and 0.0056 to 0.0197%, respectively. The total N, P, and S concentrations in the shoots were 0.17 to 5.07%, 0.0012 to 0.2935%, and 0.0002 to 0.0011%, respectively. The study indicated that jute leaves are enriched in nutrition and may be a good source of nourishment for human health. This research also illustrated that the jute field had low to medium fertility soil status. It is suggested that the farmers of AEZ-12 should follow the fertilizer recommendation doses in jute cultivation for higher fiber yield and allow sufficient decomposition of jute roots and debris to sustain succeeding crop production and soil fertility. The study has given new information and guidelines for the researcher for future investigation. Biodivers. Conserv. Bioresour. Manag. 2024, 10(1): 35-44

Pressure space: The key subsurface commodity for CCS

Storage resource estimates are part of the foundation for Carbon Capture and Storage (CCS) policy, project development and pipeline routing. Multiple generations of such estimates have found that hundreds and even thousands of gigatons of storage are available in basins around the world. However, these estimates have largely been based on basin-scale static capacity calculations that assume pore space is accessible to CO2, because basins have open boundaries that allow water to be displaced and avoid pressure build-up. However, as we now consider large-scale injection that stresses the system capacity, limitations to the flow of CO2 and displaced brine must be considered. These limits include pressure interactions among multiple projects, physical lateral discontinuities such as faults and facies changes, overpressure, juxtaposition with impermeable basement, and regulatory requirements that require protection of freshwater. We present here a simple algorithm to estimate the total pressure-limited storage resource. Applying it to the example of the Texas coastal Miocene results in a significantly lower storage resource over our previous static capacity estimates (assuming no water production). Based on this assessment, we find that CCS is still unlikely to be capacity-limited, but effective regulation, land valuation and project development will require recalibration and consideration of all projects in pressure communication. We conclude that depth-dependent and geomechanically-limited pressure space, not pore space, is the key subsurface commodity.

Rampant Land Dispute Cases

This research examines the problem of land disputes in Indonesia caused by the illegal practices of the land mafia and poor land management by housing developers. Based on the Seven Principles of Agrarian Law, land should be used to benefit the community. However, facts on the ground show that much land is controlled unilaterally by the land mafia. They used various methods, including making fake letters and cultivating empty land to sell at high prices. This has led to many ownership disputes and legal problems for legitimate landowners and defrauded buyers. To avoid this problem, the public is advised to process the legality of their land certificates through the National Land Agency (BPN). The legal basis supporting the importance of land certificates is contained in Article 19 and Article 23 of the Basic Agrarian Law (UUPA) no. 5 of 1960 and Law no. 4 of 1996 concerning Mortgage Rights. This research also highlights the challenge of limited land in Indonesia, which causes the high economic value of land to become an object of competition. Housing developers often face land management problems, resulting in land certificates being mortgaged at banks and losses for consumers. The importance of public awareness of checking the completeness and validity of documents before carrying out a house purchase transaction is emphasized to avoid problems in the future. Education and supervision from the government and related institutions, such as BPN, are critical in protecting consumer rights and ensuring legal certainty.

Valuing public land in land policy: The role of accountancy regulations

Land values change in planning processes. Accountancy regulations define the book value of land held by local authorities. This affects the evaluation of alternative lines of action in land development, and in this way, the land policy of local authorities. This paper reflects on the case of the Netherlands, which has a well-established tradition of public land development. Traditionally, valuation has been based on historic costs: the prices for acquisition and costs of infrastructure provision paid in the past, and not the current exchange values. Losses foreseen must be taken immediately; profits can only be booked after they have been made. This paper analyses the changes in these accountancy regulations over time and studies their impact on the economic position of local authorities. It considers both regulations as the outcomes of these as being found in administrative records and the practice in the City of Enschede where there was a difference between the official value as recorded in the books and the value that was the basis for decision-making. The paper discusses the impact on land policy. There is a tension between regulations that more-and-more aim for a direct reflection of property market volatility in the books and the aim of local authorities to present financial stability. This may contribute to less financial involvement in land policies.

The role of land values in land policies: The case of Turkish land readjustment

The many problems in cities increase the need for effective land policies. Land values are at the core of land policy frameworks as they shape the implementation strategies of local governments, their effectiveness, and the consequences for individuals and society. The aim of this paper is to examine how land values within the land policy framework influence land policy objectives, with a particular focus on land readjustment. More specifically, through a three-step research process, we examine: (1) the current problems and potential improvements of Turkish area-based land readjustment through an analytical framework; (2) the potential impact of a specific policy intervention involving the provision of land values in land readjustment on land development objectives through a multiple case study approach; and (3) the broader implications of a new value-based land readjustment as a land policy instrument. The results suggest that land readjustment, by incorporating valuation, could provide better land development by enabling the acquisition and construction of public and infrastructure areas, has the potential to address the trade-offs faced by local governments, put fiscal decentralization into practice, and contribute to the development of legitimacy, effectiveness, efficiency, and equity in public land development strategies and land management.

Analyses of LULC dynamics in a socio-ecological system of the Bale Mountains Eco Region of Southeast Ethiopia.

Analysis of land use and land cover (LULC) change and its drivers and impacts in the biodiversity hotspot of Bale Mountain's socio-ecological system is crucial for formulating plausible policies and strategies that can enhance sustainable development. The study aimed to analyze spatio-temporal LULC changes and their trends, extents, drives, and impacts over the last 48 years in the Bale Mountain social-ecological system. Landsat imagery data from the years 1973, 1986, 1996, 2014, and 2021 together with qualitative data were used. LULC classification scheme employed a supervised classification method with the application of the maximum likelihood algorithm technique. In the period between 1973 and 2021, agriculture, bare land, and settlement showed areal increment by 153.13%, 295.57%, and 49.03% with the corresponding increased annual rate of 1.93%, 2.86%, and 0.83%, respectively. On the contrary, forest, wood land, bushland, grass land, and water body decreased by 29.97%, 1.36%, 28.16%, 8.63%, and 84.36% during the study period, respectively. During the period, major LULC change dynamics were also observed; the majority of woodland was converted to agriculture (757.8 km2) and grassland (531.3 km2); and forests were converted to other LULC classes, namely woodland (766.5 km2), agriculture (706.1 km2), grassland (34.6 km2), bushland (31.9 km2), settlement (20.5 km2), and bare land (14.3 km2). LULC changes were caused by the expansion of agriculture, settlement, overgrazing, infrastructure development, and fire that were driven by population growth and climate change, and supplemented by inadequate policy and institutional factors. Social and environmental importance and values of land uses and land covers in the study area necessitate further assessment of potential natural resources' user groups and valuation of ecosystem services in the study area. Hence, we suggest the identification of potential natural resource-based user groups, and assessment of the influence of LULC changes on ecosystem services in Bale Mountains Eco Region (BMER) for the sustainable use and managements of land resources.

How does single- or double-cropped rice policy influence spatially irrigated land value in China?

How does single- or double-cropped rice policy influence spatially irrigated land value in China?

Synergistic Remediation of Cd-Contaminated Soil with Pure Natural Adsorption Material and Hyperaccumulator Plant

In recent years, cadmium (Cd) contamination in agricultural soil has emerged as a significant global environmental issue, posing irreversible harm to crops and human health. As a result, efficient soil remediation techniques are urgently needed. For this issue, synergistic remediation by material and plant is an effective approach. In this study, a natural and green adsorption material (starch/montmorillonite composite, SMC) of Cd was prepared, which was further employed in synergistic remediation toward soil Cd contamination with the cadmium hyperaccumulator plant Bidens bipinnata. The results of the pot experiment demonstrated that an available Cd removal rate of 77.92 could be obtained, and the results of the field experiments demonstrate that the concentrations of Cd in contaminated soil could be reduced below the risk-screening values for agricultural land. Further analyses, including a microbial community diversity study, changes in soil BCR fraction components, and a TCLP toxicity leaching experiment, unequivocally elucidated that the synergy of SMC and Bidens bipinnata enhanced the remediation efficiency of Cd in contaminated soil. This study confirmed the application potential of the synergy of SMC and Bidens bipinnata toward Cd-contaminated soil.

ANALYZING THE SOCIO-LEGAL DYNAMICS AND IMPACT ASSESSMENT OF LAND ACQUISITION IN BANGLADESH: A COMPARATIVE PERSPECTIVE WITH INDIAN LAWS AND GLOBAL BEST PRACTICES

Land acquisition has continued to be a major concern in Bangladesh, a densely populated country, because of the nation’s limited land resources and the value of land to people’s livelihoods. There is a great deal of hardship and discontent as a result of inadequate land acquisition and rehabilitation policies, which have left the displaced with insufficient compensation and rehabilitation. This article compares and contrasts the land acquisition laws of India and Bangladesh, taking a critical look at both countries’ current legal frameworks. Although recent legislation has been introduced in both countries, Bangladesh’s framework is insufficient to protect the rights and interests of affected landowners. The Acquisition and Requisition of Immovable Property Act 2017 of Bangladesh has also fallen short of international standards on the acquisition process. In order to support sustainable growth and protect landowners’ rights, this article argues for the creation of a transparent legal framework and prudent policies. Based on global experiences and best practices, the paper offers a series of suggestions to improve the process of acquisition and guarantee equitable treatment for all impacted parties. Recognising the critical role of land acquisition in Bangladesh’s development trajectory and its profound impact on the livelihoods of millions, this article underscores the urgency of reforming the existing land acquisition law. This analysis contributes to the ongoing discourse on land acquisition in Bangladesh with the objective to establish a more equitable balance between public interests and the rights of landowners, ultimately benefiting society as a whole.

Pengadaan Tanah Untuk Kepentingan Umum Diatas Tanah Wakaf (Studi Kasus Proyek Jalan Tol Di Musholla Qubatul Jannah Desa Adiwerna Kecamatan Adiwerna Kabupaten Tegal)

The provision of land in the development process is referred to in law as land acquisition. This land acquisition process generally involves property owned by various parties, including waqf land. In the construction of the Trans Java Toll Road in Central Java Province, there are 85 waqf lands, including 9 waqf lands in Tegal Regency, one of which is the Qubatul Jannah mosque in Adiwerna Village, Adiwerna District, Tegal Regency. This study aims to examine the existing legal regulations in Indonesia regarding waqf land affected by land acquisition for toll road construction at Qubatul Jannah musala To examine the procedures for waqf land affected by land acquisition for construction of toll roads for public purposes at Qubatul Jannah musala in Adiwerna Village. The type of research is library research. The approach used is a case approach in normative research. Data collection techniques through literature studies, interviews and qualitative data analysis. The results showed that the regulation of waqf land affected by land acquisition for the construction of the Qubatul Jannah mosque toll road in Adiwerna Village refers to Law Number 41 of 2004 concerning Waqf jo. Government Regulation Number 25 of 2018 concerning Amendments to Government Regulation Number 42 of 2006 concerning the Implementation of Law Number 41 of 2004 concerning Waqf. And for the procedure, the nadzir must submit an application for a permit to change the status of the exchange of waqf land to the Ministry of Religion of Tegal Regency which has been equipped with a waqf land valuation document. Based on the results of this research is expected to be information and input for students, academics, practitioners and all parties in need within the Faculty of Law, Pancasakti University Tegal.

Prediction Model of Groundwater Sulphate Based on Combined Multi-source Spatio-temporal Data

The accurate prediction of spatial variation trends in groundwater SO42- is of great significance for improving groundwater quality and regional groundwater management level. The multi-source spatio-temporal data such as land cover data, soil parameter data, digital elevation data, and groundwater pH value in the plain area of the Yarkant River Basin in 2011, 2014, 2017, and 2020 were used as characteristic variables to analyze their correlation with groundwater SO42- concentration. To enhance the prediction accuracy, the Bayesian optimization algorithm (BOA) was used to optimize the random forest regression (RFR). Based on the BOA-RFR model, the importance of the characteristic variables was analyzed, the prediction accuracy of the model was evaluated, and the groundwater SO42- prediction map was generated. The results showed that pH value, ground elevation (GE), and percentage of bare land (BAR) in the contribution area were important parameters influencing groundwater hydrochemical composition, which were significantly negatively correlated with groundwater SO42- concentration, and the importance of impact factors for predicting groundwater SO42- concentration exceeded 25 %. The geostatistical interpolation method was used as an auxiliary tool for the predictive modeling of spatial distribution. After adding auxiliary samples, the R2 of groundwater SO42- concentration prediction of the BOA-RFR model was greater than 0.96, and the maximum values of RMSE and MAE were reduced by 4.7 % and 23.8 %, respectively, compared with the minimum values of the model with fewer samples. The SO42- concentration prediction map showed that high SO42- groundwater was enriched in the northeast of the plain area of the Yarkand River Basin, an area that was expanding.

Analysis of Land Cover Change in Karanganyar District in 2013 and 2022 Based on Story Maps

Abstract Land use change is influenced by human activities that affect the land cover of an area. Most of the Karanganyar Regency area is still agricultural land and as the population increases from year to year, it has an impact on land conversion. The purpose of this study is to analyze land cover changes in Karanganyar Regency in 2013 and 2022, analyze the factors that influence land change, and present information on land cover changes using Story Maps. The research method used qualitative descriptive analysis with the Maximum Likelihood Classification method and the results tested for accuracy were obtained from the Kappa method. The results showed that land cover change from 2013 to 2022 was dominated by residential land and paddy fields as much as 11946.10 ha or 14.87% and 14777.35 ha or 18.40%. Factors of land cover change are population growth, relatively cheap land value, easy accessibility, and easy licensing mechanism for infrastructure development. The land cover of Karanganyar Regency from 2013 to 2022 is represented in Story Maps, displaying maps and analysis with an attractive and interactive display.

Soil carbon tonne-year accounting: Crediting the additional time-integrated amount of carbon captured in soil

Soil organic carbon (SOC) sequestration has become a critical component of climate change mitigation strategies, offering a natural and economically viable means to mitigate atmospheric CO2 levels. Current practices in SOC sequestration auditing face limitations due to the requirement for carbon permanence, which can discourage landholders from participating due to long-term commitments and uncertainties. We propose the concept of the Soil Carbon Tonne-Year as a new unit of measurement for assessing SOC sequestration, focusing on the time-integrated amount of carbon stored in the soil. Soil carbon tonne-year measures SOC stock across different operational soil carbon pools (such as Mineral Associated Organic Carbon and Particulate Organic Carbon), each with its own mean residence time. This approach, based on physical rather than economic or climatic metrics, aims to offer a more accurate, flexible, and realistic method of accounting for SOC. Our examples suggest that the Soil Carbon Tonne-Year approach could significantly enhance management flexibility, potentially increasing land value and leading to sustainable gains over the long term.

LAND VALUE ASSESSMENT METHODS AND THEIR INFLUENCE ON THE MARKET PRICE OF LAND PLOTS

The paper analyzes the land market, which is part of the wider property market sector, focusing on the many factors that determine its dynamics and complexity. It was determined that the main drivers of land value are geographical location, economic conditions, legislative regulation, political stability, infrastructure and development prospects of the territory. The location of land plots in urbanized or strategically important locations significantly increases their value due to high demand, while plots in remote or less developed areas have a lower value. The article examines the impact of the economic climate, where during periods of economic growth the demand for land increases, leading to higher prices, while economic downturns can lead to lower prices. Land laws, tax policies, and land use regulations are key regulatory factors that have a significant impact on market value. Further prospects for the development of the area, such as plans for the construction of new residential complexes or commercial centers, can also significantly increase the value of land plots. It is noted that according to the International Valuation Standards, the market value is considered as the amount of money for which the property could be transferred as a result of a commercial agreement between knowledgeable and independent parties. The article emphasizes the importance of an integrated approach to the analysis of the land market, which includes the assessment of all potential factors affecting pricing, including the size of the plot and its specific purpose, which determine its market attractiveness and value. The use of combined evaluation methods, such as comparative, profitable and cost, allows to obtain a more accurate assessment of the value of land plots, which is critical for investors, developers and policy decisions. The results of the study can be used by governments to evaluate and revise land legislation, which will contribute to more effective management of land resources. The importance of accurate land valuation for the implementation of successful land reforms that can help ensure the equitable use of land resources.

Land Policies and Institutions for Equitable and Resilient Growth in Africa

AbstractIn coming decades, Africa's urban populations will expand, and the effects of climate change be more keenly felt. Land policies and institutions will be key for urban dwellers to be able access productive jobs, breathe clean air, and live in decent housing; for entrepreneurs, especially women, to leverage land for productive investment; and for farmers to diversify, insure against shocks, and accumulate capital. Yet, many African land registries perform poorly, command little trust, and have failed to capitalize on opportunities to improve quality, relevance, and outreach via digital interoperability, use of earth observation, and connectivity. Literature highlights scope for regulatory and institutional reforms to (a) expand property taxation and land value capture and to improve urban service delivery, planning, and land use regulations; (b) increase quality and affordability of land services and access to land price and ownership data; (c) guide issuance of rural land use rights to reduce barriers to rural factor markets, including by spatially enabling farmer registries to improve subsidy targeting and effectiveness; and (d) demarcation and transparent decentralized management of public land to attract investment, including in climate finance, without fueling corruption, and to manage disputes before they escalate into ethnic violence.