Land degradation and spatial vulnerabilities: a study of inter-village differences in Chambal Valley, India
Land degradation and spatial vulnerabilities: a study of inter-village differences in Chambal Valley, India
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DOI：
10.1080/10225706.2012.754775
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发表时间：
2013-06
期刊：
影响因子：
--
通讯作者：
P. Pani;P. Carling
中科院分区：
文献类型：
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作者：
P. Pani;P. Carling
土地退化与社会经济发展之间的相互关系是多层次的，复杂的。本研究采用多学科方法，试图整合多种数据来源和方法，研究印度半干旱地区土地退化的影响。利用经实地验证的遥感数据，对印度中部Chambal河谷下游土地退化的程度和大致格局进行了估计。研究区域内的所有村庄都有地理参照和数字化，并叠加在该地区的峡谷地图上。根据这一测绘工作，该地区的村庄被分为两组：位于退化地区内的村庄和位于退化地区外的村庄。通过一些综合指数对这两组村庄的社会经济发展水平进行了比较。这里提出的证据表明，位于退化地区内的村庄的社会经济发展水平始终低于位于该地区以外的村庄。这一结果不仅适用于所有发展水平，而且适用于政策控制的指标，如基础设施发展指数。结果表明，不利的地理条件和环境退化所产生的负外部性可能会在不同的空间尺度上运作。即使在相对欠发达的地区，地处沟壑也意味着发展水平较低，公共基础设施较少。
The interrelationship between land degradation and socio-economic development is multilayered and complex. This study, following a multi-disciplinary approach, attempts to integrate multiple data sources and methodologies to study the implications of land degradation in semi-arid India. Using remote sensing data with field validation, the extent and broad pattern of land degradation in lower Chambal valley in central India has been estimated. All villages within the study area were geo-referenced and digitized, and were superimposed on the ravine map of the district. Based on this mapping exercise, villages of the district were classified into two groups: those located within the degraded area and those situated outside. The levels of socio-economic development in these two sets of villages were compared through a number of composite indices. The evidence presented here shows that villages located within the degraded area have consistently lower levels of socio-economic development than those located outside the area. The result is true not only for over-all levels of development, but also for policy-controlled indices such as infrastructure development index. The results suggest that negative externalities arising out of adverse geographic conditions and environmental degradation may operate at different spatial scales. Even within a relatively less developed region, being located within ravines implies lower levels of development and less access to public infrastructure.