Pub Date : 2021-05-04DOI: 10.1080/1747423X.2021.1933227
José P. Castaño-Sánchez, R. Izaurralde, S. Prince
ABSTRACT Globally, significant land conversions of traditionally managed temperate grasslands to croplands were taking place. Among these is South-Central Uruguay where changes in recent decades have highly likely impacted plant productivity, soil quality, and carbon fluxes at a regional scale. A geospatial version of the biophysical model EPIC was developed and validated (Geospatial-EPIC-UY). An analysis of the potential impact of the land use change on the carbon fluxes was performed, considering the conversion of all the suitable cropping areas over a 15-year period. Modeled net ecosystem exchange (NEE) showed that, on average, grasslands C emissions were close to neutral (0.1 Mg CO2 ha−1 year−1), while croplands contributed almost 7 times this value. Also, the inter-annual variation of grassland NEE was significantly less than that of the cropland. These results highlight the potential C losses under extended land conversions, which could be attenuated or even reverted if best management practices were implemented.
摘要在全球范围内，传统管理的温带草原向农田的土地转换正在发生。其中包括乌拉圭中南部，近几十年来的变化极有可能在区域范围内影响植物生产力、土壤质量和碳通量。开发并验证了生物物理模型EPIC的地理空间版本（geospatial EPIC UY）。对土地利用变化对碳通量的潜在影响进行了分析，考虑了15年内所有合适种植区的转换。模拟的净生态系统交换（NEE）表明，平均而言，草原碳排放量接近中性（0.1 Mg CO2 ha−1 year−1），而农田的贡献几乎是这个值的7倍。草地NEE的年际变化显著小于农田。这些结果突出了延长土地转换下的潜在碳损失，如果实施最佳管理实践，这种损失可能会减弱甚至恢复。
{"title":"Land-use conversions from managed grasslands to croplands in Uruguay increase medium-term net carbon emissions to the atmosphere","authors":"José P. Castaño-Sánchez, R. Izaurralde, S. Prince","doi":"10.1080/1747423X.2021.1933227","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1933227","url":null,"abstract":"ABSTRACT Globally, significant land conversions of traditionally managed temperate grasslands to croplands were taking place. Among these is South-Central Uruguay where changes in recent decades have highly likely impacted plant productivity, soil quality, and carbon fluxes at a regional scale. A geospatial version of the biophysical model EPIC was developed and validated (Geospatial-EPIC-UY). An analysis of the potential impact of the land use change on the carbon fluxes was performed, considering the conversion of all the suitable cropping areas over a 15-year period. Modeled net ecosystem exchange (NEE) showed that, on average, grasslands C emissions were close to neutral (0.1 Mg CO2 ha−1 year−1), while croplands contributed almost 7 times this value. Also, the inter-annual variation of grassland NEE was significantly less than that of the cropland. These results highlight the potential C losses under extended land conversions, which could be attenuated or even reverted if best management practices were implemented.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"240 - 259"},"PeriodicalIF":3.2,"publicationDate":"2021-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1933227","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45058607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-04DOI: 10.1080/1747423X.2021.1928310
Sophie Plassin, J. Koch, Madison Wilson, K. Neal, J. Friedman, Stephanie Paladino, J. Worden
ABSTRACT Improving our understanding of land-use change is critical for water management in semi-arid areas, due to its effects on the hydrological cycle. In the U.S. Southwest, fallowing farmland has become one strategy to reduce water use. Previous to this study, the magnitude and location of changes in fallowing have not been studied in depth. Using the 30-meter Cropland Data Layer, this study assessed the spatial and temporal patterns of fallowing in the U.S. portion of the Rio Grande/Río Bravo Basin (RGB) at three spatial scales (basin, state, and ecoregion) between 2008 and 2018. Our results do not show evidence of an increasing trend in fallowing at the basin level. However, the spatio-temporal patterns differed considerably among states and ecoregions, revealing hotspots of fallowing. By showing that land fallowing is not a widespread practice across the basin, our findings indicate that the potential of this strategy to save water has been underused.
{"title":"Multi-scale fallow land dynamics in a water-scarce basin of the U.S. Southwest","authors":"Sophie Plassin, J. Koch, Madison Wilson, K. Neal, J. Friedman, Stephanie Paladino, J. Worden","doi":"10.1080/1747423X.2021.1928310","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1928310","url":null,"abstract":"ABSTRACT Improving our understanding of land-use change is critical for water management in semi-arid areas, due to its effects on the hydrological cycle. In the U.S. Southwest, fallowing farmland has become one strategy to reduce water use. Previous to this study, the magnitude and location of changes in fallowing have not been studied in depth. Using the 30-meter Cropland Data Layer, this study assessed the spatial and temporal patterns of fallowing in the U.S. portion of the Rio Grande/Río Bravo Basin (RGB) at three spatial scales (basin, state, and ecoregion) between 2008 and 2018. Our results do not show evidence of an increasing trend in fallowing at the basin level. However, the spatio-temporal patterns differed considerably among states and ecoregions, revealing hotspots of fallowing. By showing that land fallowing is not a widespread practice across the basin, our findings indicate that the potential of this strategy to save water has been underused.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"291 - 312"},"PeriodicalIF":3.2,"publicationDate":"2021-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1928310","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48713176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-04DOI: 10.1080/1747423X.2021.1922525
S. Wadduwage
ABSTRACT Loss of agricultural land due to urban sprawl has negative impacts on community lifestyles and green landscapes in peri-urban areas. However, researchers rarely investigate the complex decisions made by landowners and land managers about changes in farmland at the fringes of cities. A postal questionnaire was sent to 1,600 farmland owners and managers on the fringes of Adelaide, South Australia, to elicit information on internal and external factors driving their land-use decisions. Descriptive statistics were developed for farmers’ demographics, farming life, industry and motivations in managing land while investigating 28 primary factors representing the socio-economic, environmental and institutional land governance influences on land-use decisions. Results demonstrate the advantage of deriving latent factors to identify these land-use transformations, as they identify a different set of factors with higher importance than the farmers’ recommendations alone. These findings can improve the knowledge of farmers’ land-use decision-making behaviour to model complex land-use transitions on city fringes.
{"title":"Drivers of peri-urban farmers’ land-use decisions: an analysis of factors and characteristics","authors":"S. Wadduwage","doi":"10.1080/1747423X.2021.1922525","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1922525","url":null,"abstract":"ABSTRACT Loss of agricultural land due to urban sprawl has negative impacts on community lifestyles and green landscapes in peri-urban areas. However, researchers rarely investigate the complex decisions made by landowners and land managers about changes in farmland at the fringes of cities. A postal questionnaire was sent to 1,600 farmland owners and managers on the fringes of Adelaide, South Australia, to elicit information on internal and external factors driving their land-use decisions. Descriptive statistics were developed for farmers’ demographics, farming life, industry and motivations in managing land while investigating 28 primary factors representing the socio-economic, environmental and institutional land governance influences on land-use decisions. Results demonstrate the advantage of deriving latent factors to identify these land-use transformations, as they identify a different set of factors with higher importance than the farmers’ recommendations alone. These findings can improve the knowledge of farmers’ land-use decision-making behaviour to model complex land-use transitions on city fringes.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"273 - 290"},"PeriodicalIF":3.2,"publicationDate":"2021-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1922525","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47668234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-04DOI: 10.1080/1747423X.2021.1893844
Asnake Adane, W. Bewket
ABSTRACT The objectives of the study are to identify LULC types that have undergone changes due to quality coffee production and assess smallholders’ perceptions of the LULC changes associated with their coffee production practices in Yirgacheffe coffee area, southern Ethiopia. The study used Landsat satellite images of 1988, 2003, and 2018 to examine the LULC change. In addition, household surveys and focus group discussions were carried out to assess land management practices in the study area. The findings show that forest coffee (FC) cover decreased at a rate of 1.02% per year in the 30-year time, which was mostly changed to semi-forest and semi-plantation coffee cover. The study area has also experienced an increase in semi-plantation cover (0.07% per year), semi-forest coffee (0.9% per year) over the study period, showing a gradual decrease in vegetation cover. This also suggests that a major driving force for the local LULC change is the increasing demand for coffee in the global and national market, as evident from the increasing trend of coffee export from Ethiopia. Survey data show that quality coffee production drives coffee agroforest conversion while it has potitive effects on land management practices by smallholders. Reducing the current heavy dependence of livelihoods on coffee as the single most important commodity is likely to enhance sustainability of the coffee agroforests in the area.
{"title":"Effects of Quality Coffee Production by Smallholders on Local Land Use and Land Cover in Yirgacheffe, Southern Ethiopia","authors":"Asnake Adane, W. Bewket","doi":"10.1080/1747423X.2021.1893844","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1893844","url":null,"abstract":"ABSTRACT The objectives of the study are to identify LULC types that have undergone changes due to quality coffee production and assess smallholders’ perceptions of the LULC changes associated with their coffee production practices in Yirgacheffe coffee area, southern Ethiopia. The study used Landsat satellite images of 1988, 2003, and 2018 to examine the LULC change. In addition, household surveys and focus group discussions were carried out to assess land management practices in the study area. The findings show that forest coffee (FC) cover decreased at a rate of 1.02% per year in the 30-year time, which was mostly changed to semi-forest and semi-plantation coffee cover. The study area has also experienced an increase in semi-plantation cover (0.07% per year), semi-forest coffee (0.9% per year) over the study period, showing a gradual decrease in vegetation cover. This also suggests that a major driving force for the local LULC change is the increasing demand for coffee in the global and national market, as evident from the increasing trend of coffee export from Ethiopia. Survey data show that quality coffee production drives coffee agroforest conversion while it has potitive effects on land management practices by smallholders. Reducing the current heavy dependence of livelihoods on coffee as the single most important commodity is likely to enhance sustainability of the coffee agroforests in the area.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"205 - 221"},"PeriodicalIF":3.2,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1893844","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45213721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-04DOI: 10.1080/1747423X.2021.1879296
A. Wästfelt
ABSTRACT This paper presents a new geographical analytical model for studies on agricultural landscape change. The model builds on the idea presented by Torsten Hägerstrand that neighbourhood configurations act as filters in change processes. The proposed approach operationalizes this idea of filtering into a geographical interpretation model that combines three different strands of research: ontologies of land use in geographical information science; local spatial contextual analysis of remote sensing data; and agency- and actor-sensitive functional time-space analysis of farming. This approach includes the use of satellite images and makes it possible to infer land-use changes as reactions to long-term policy changes, thus demonstrating how landscape configuration and land use are changing. The model is assessed by applying it to a case study in western Östergötland in central Sweden.
{"title":"Landscape as filter - farm adaptation to changing contexts","authors":"A. Wästfelt","doi":"10.1080/1747423X.2021.1879296","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1879296","url":null,"abstract":"ABSTRACT This paper presents a new geographical analytical model for studies on agricultural landscape change. The model builds on the idea presented by Torsten Hägerstrand that neighbourhood configurations act as filters in change processes. The proposed approach operationalizes this idea of filtering into a geographical interpretation model that combines three different strands of research: ontologies of land use in geographical information science; local spatial contextual analysis of remote sensing data; and agency- and actor-sensitive functional time-space analysis of farming. This approach includes the use of satellite images and makes it possible to infer land-use changes as reactions to long-term policy changes, thus demonstrating how landscape configuration and land use are changing. The model is assessed by applying it to a case study in western Östergötland in central Sweden.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"142 - 158"},"PeriodicalIF":3.2,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1879296","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44270348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-04DOI: 10.1080/1747423X.2021.1882598
Ma Cho, O. Mutanga
ABSTRACT Effective planning of rangeland use is crucial to mitigate the adverse impacts of anthropogenic activities and for the sustenance of rangeland ecosystems. The development of participatory GIS approaches created new opportunities to capture the varying views of local actors in land use planning. This paper reviews literatures that address PGIS application in rangeland planning and management in Africa using articles selected from Google Scholar repository. Articles that broadly align to the research objective were examined in detail. Although the investigation revealed that PGIS contributes significantly in promoting the integration of local knowledge in rangeland planning and management, there are still concerns about content and methodological limitations, representation, equity and access. These outcomes paint a persistent gloomy picture on the involvement of communities in the management of their resources. More aggressive and holistic approaches are required for accelerated and effective rangeland planning under the fourth industrial revolution dispensation.
{"title":"Understanding participatory GIS application in rangeland use planning: a review of PGIS practice in Africa","authors":"Ma Cho, O. Mutanga","doi":"10.1080/1747423X.2021.1882598","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1882598","url":null,"abstract":"ABSTRACT Effective planning of rangeland use is crucial to mitigate the adverse impacts of anthropogenic activities and for the sustenance of rangeland ecosystems. The development of participatory GIS approaches created new opportunities to capture the varying views of local actors in land use planning. This paper reviews literatures that address PGIS application in rangeland planning and management in Africa using articles selected from Google Scholar repository. Articles that broadly align to the research objective were examined in detail. Although the investigation revealed that PGIS contributes significantly in promoting the integration of local knowledge in rangeland planning and management, there are still concerns about content and methodological limitations, representation, equity and access. These outcomes paint a persistent gloomy picture on the involvement of communities in the management of their resources. More aggressive and holistic approaches are required for accelerated and effective rangeland planning under the fourth industrial revolution dispensation.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"174 - 187"},"PeriodicalIF":3.2,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1882598","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44788353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-04DOI: 10.1080/1747423X.2021.1882597
F. Peña-Cortés, Cristian Vergara-Fernández, J. Pincheira-Ulbrich, F. Aguilera-Benavente, Natalia Gallardo-Alvarez
ABSTRACT Tree plantations have expanded rapidly during the last decades, specially in Asia and South America, and Chile has shown one of the largest increases in tree plantations in the world. The aim of this study was to analyze the dynamic and factors statistically associated with the expansion of tree plantations in two coastal basins in south-central Chile. We used logistic regression and a multimodel inference approach to assess the association of 13 location factors with tree plantation expansion in two periods (1987–2001; 2001–2015). The area of tree plantations increased by 292% and 196% in the Budi and Lingue basins, respectively. The presence of agriculture fields before conversion to tree plantations showed the greatest effect in both basins, followed by the suitability of the soil for forestry. Likewise, tree plantations were highly associated with the replacement of native vegetation, contributing to ongoing deforestation, and changes in forest policy increased the expansion in indigenous land.
{"title":"Location factors and dynamics of tree plantation expansion in two coastal river basins in south-central Chile: basis for land use planning","authors":"F. Peña-Cortés, Cristian Vergara-Fernández, J. Pincheira-Ulbrich, F. Aguilera-Benavente, Natalia Gallardo-Alvarez","doi":"10.1080/1747423X.2021.1882597","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1882597","url":null,"abstract":"ABSTRACT Tree plantations have expanded rapidly during the last decades, specially in Asia and South America, and Chile has shown one of the largest increases in tree plantations in the world. The aim of this study was to analyze the dynamic and factors statistically associated with the expansion of tree plantations in two coastal basins in south-central Chile. We used logistic regression and a multimodel inference approach to assess the association of 13 location factors with tree plantation expansion in two periods (1987–2001; 2001–2015). The area of tree plantations increased by 292% and 196% in the Budi and Lingue basins, respectively. The presence of agriculture fields before conversion to tree plantations showed the greatest effect in both basins, followed by the suitability of the soil for forestry. Likewise, tree plantations were highly associated with the replacement of native vegetation, contributing to ongoing deforestation, and changes in forest policy increased the expansion in indigenous land.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"159 - 173"},"PeriodicalIF":3.2,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1882597","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47620090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-04DOI: 10.1080/1747423X.2021.1879297
R. Aspinall, M. Staiano, D. Pearson
ABSTRACT Time-related information in land-change studies is reviewed using case studies in JLUS and LAND. An explicit focus on time has potential for exploring process-based perspectives. We report how time is represented and patterns in pre-analytical choices are detected, identifying practices to enhance the relevance and impact of land-change studies. Results show 40% of the studies use two datasets; the modal timespan and interval between datasets are 10 years; 79% are durations up to 30 years; 73% are changes since 1972. Modal start dates are 1990 and 2000. Dates ending in 0 and 5 are over-represented and lack explicit justification. The prevalence of a ‘two-date approach’ restricts measuring and analyzing change, identifying temporal non-stationarity is precluded, and modelling change pathways and responses to underlying system dynamics are limited. An improved focus on time in dataset choice to developimproved understanding of dynamics and change offers broader insights into land-system functions.
{"title":"Data, time, change and land-system dynamics","authors":"R. Aspinall, M. Staiano, D. Pearson","doi":"10.1080/1747423X.2021.1879297","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1879297","url":null,"abstract":"ABSTRACT Time-related information in land-change studies is reviewed using case studies in JLUS and LAND. An explicit focus on time has potential for exploring process-based perspectives. We report how time is represented and patterns in pre-analytical choices are detected, identifying practices to enhance the relevance and impact of land-change studies. Results show 40% of the studies use two datasets; the modal timespan and interval between datasets are 10 years; 79% are durations up to 30 years; 73% are changes since 1972. Modal start dates are 1990 and 2000. Dates ending in 0 and 5 are over-represented and lack explicit justification. The prevalence of a ‘two-date approach’ restricts measuring and analyzing change, identifying temporal non-stationarity is precluded, and modelling change pathways and responses to underlying system dynamics are limited. An improved focus on time in dataset choice to developimproved understanding of dynamics and change offers broader insights into land-system functions.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"129 - 141"},"PeriodicalIF":3.2,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1879297","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45097899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-04DOI: 10.1080/1747423X.2021.1882599
Andrew Chilombo
ABSTRACT The concept of marginal land in large-scale land acquisitions (LSLAs) has become important to understand land for LSLA deals. Based on remotely gathered geospatial data, the biophysical dimension of the concept dominates the characterization of land for LSLA deals. Little attention is paid to the socio-cultural dimension that represents years of dynamic community–environment interactions as lived experiences that are well structured in traditional knowledge. Informed by participatory appraisal methods in Nansanga farm block, an LSLA deal in Zambia, this study aimed at providing socio-cultural evidence that questions the concept constructed within science-development policy and political spaces. Overall, based on socio-cultural evidence, the findings suggest that Nansanga cannot be discounted as marginal land. In contribution to improving our understanding of human-environment interaction in land-use science, the paper argues for a mix of process-oriented and pattern-based approaches to gain better insights into land use change at spatial and temporal scales.
{"title":"Questioning the narrative of land marginality in large-scale land acquisition deals: case study of Nansanga Farm Block in Zambia","authors":"Andrew Chilombo","doi":"10.1080/1747423X.2021.1882599","DOIUrl":"https://doi.org/10.1080/1747423X.2021.1882599","url":null,"abstract":"ABSTRACT The concept of marginal land in large-scale land acquisitions (LSLAs) has become important to understand land for LSLA deals. Based on remotely gathered geospatial data, the biophysical dimension of the concept dominates the characterization of land for LSLA deals. Little attention is paid to the socio-cultural dimension that represents years of dynamic community–environment interactions as lived experiences that are well structured in traditional knowledge. Informed by participatory appraisal methods in Nansanga farm block, an LSLA deal in Zambia, this study aimed at providing socio-cultural evidence that questions the concept constructed within science-development policy and political spaces. Overall, based on socio-cultural evidence, the findings suggest that Nansanga cannot be discounted as marginal land. In contribution to improving our understanding of human-environment interaction in land-use science, the paper argues for a mix of process-oriented and pattern-based approaches to gain better insights into land use change at spatial and temporal scales.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"188 - 204"},"PeriodicalIF":3.2,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423X.2021.1882599","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60009297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-02DOI: 10.1080/1747423x.2020.1858198
Philippe Rufin, D. Müller, M. Schwieder, Dirk Pflugmacher, P. Hostert
ABSTRACT Long-term monitoring of the extent and intensity of irrigation systems is needed to track crop water consumption and to adapt land use to a changing climate. We mapped the expansion and changes in the intensity of irrigated dry season cropping in Turkey´s Southeastern Anatolia Project annually from 1990 to 2018 using Landsat time series. Irrigated dry season cropping covered 5,779 km² (± 479 km²) in 2018, which represents an increase of 617% over the study period. Dry season cropping was practiced on average every second year, but spatial variability was pronounced. Increases in dry season cropping frequency were observed on 40% of the studied croplands. The presented maps enable the identification of land use intensity hotspots at 30 m spatial resolution, and can thus aid in assessments of water consumption and environmental degradation. All maps are openly available for further use at https://doi.org/10.5281/zenodo.4287661.
{"title":"Landsat time series reveal simultaneous expansion and intensification of irrigated dry season cropping in Southeastern Turkey","authors":"Philippe Rufin, D. Müller, M. Schwieder, Dirk Pflugmacher, P. Hostert","doi":"10.1080/1747423x.2020.1858198","DOIUrl":"https://doi.org/10.1080/1747423x.2020.1858198","url":null,"abstract":"ABSTRACT Long-term monitoring of the extent and intensity of irrigation systems is needed to track crop water consumption and to adapt land use to a changing climate. We mapped the expansion and changes in the intensity of irrigated dry season cropping in Turkey´s Southeastern Anatolia Project annually from 1990 to 2018 using Landsat time series. Irrigated dry season cropping covered 5,779 km² (± 479 km²) in 2018, which represents an increase of 617% over the study period. Dry season cropping was practiced on average every second year, but spatial variability was pronounced. Increases in dry season cropping frequency were observed on 40% of the studied croplands. The presented maps enable the identification of land use intensity hotspots at 30 m spatial resolution, and can thus aid in assessments of water consumption and environmental degradation. All maps are openly available for further use at https://doi.org/10.5281/zenodo.4287661.","PeriodicalId":56005,"journal":{"name":"Journal of Land Use Science","volume":"16 1","pages":"94 - 110"},"PeriodicalIF":3.2,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1747423x.2020.1858198","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45518886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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