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Mining spatial information to investigate the evolution of karst rocky desertification and its human driving forces in Changshun, China
Xu, ErQi(许尔琪); Zhang, HQ; Li, MX
2013
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume458Pages:419-426
Corresponding AuthorZhang, HQ
AbstractThe processes of karst rocky desertification (KRD) have been found to cause the most severe environmental degradation in southwestern China. Understanding the driving forces that cause KRD is essential for managing and restoring the areas that it impacts. Studies of the human driving forces of KRD are limited to the county level, a specific administrative unit in China; census data are acquired at this scale, which can lead to scale biases. Changshun County is studied here as a representative area and anthropogenic influences in the county are accounted for by using Euclidean distances for the proximity to roads and settlements. We propose a standard coefficient of human influence (SO!) that standardizes the Euclidean distances for different KRD transformations to compare the effects of human activities in different areas. In Changshun County, the individual influences of roads and settlements share similar characteristics. The SOIs of improved KRD transformation types are almost negative, but the SOls of deteriorated types are nearly positive except for one form of KRD turning to the extremely severe KRD. The results indicated that the distribution and evolution of the KRD areas from 2000 to 2010 in Changshun were affected positively by human activities (e.g., KRD restoration projects) and also negatively (e.g., by intense and irrational land use). Our results demonstrate that the spatial techniques and SOI used in this study can effectively incorporate information concerning human influences and internal KRD transformations. This provides a suitable approach for studying the relationships between human activities and KRD processes at fine scales.
KeywordKarst Rocky Desertification Human Driving Forces Fine Scale Spatial Technique Standard Coefficient Of Influence
Indexed BySCI
Funding OrganizationNational Program of Monitoring Desertification;Combating Desertification Management Center of the State Forestry Administration;Ministry of Land and Resources;Program of Regional Sustainable Land Use
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/27939
Collection研究生部
Recommended Citation
GB/T 7714
Xu, ErQi,Zhang, HQ,Li, MX. Mining spatial information to investigate the evolution of karst rocky desertification and its human driving forces in Changshun, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2013,458:419-426.
APA Xu, ErQi,Zhang, HQ,&Li, MX.(2013).Mining spatial information to investigate the evolution of karst rocky desertification and its human driving forces in Changshun, China.SCIENCE OF THE TOTAL ENVIRONMENT,458,419-426.
MLA Xu, ErQi,et al."Mining spatial information to investigate the evolution of karst rocky desertification and its human driving forces in Changshun, China".SCIENCE OF THE TOTAL ENVIRONMENT 458(2013):419-426.
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