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	Mining spatial information to investigate the evolution of karst rocky desertification and its human driving forces in Changshun, China
	Xu E. Q. ; Zhang H. Q. ; Li M. X.
	2013
关键词	Karst rocky desertification Human driving forces Fine scale Spatial technique Standard coefficient of influence guizhou province southwestern china county areas land environment region zone
英文摘要	The 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. (C) 2013 Elsevier S.V. All rights reserved.
出处	Science of the Total Environment
卷	458
页	419-426
收录类别	SCI
语种	英语
ISSN号	0048-9697
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30140]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Xu E. Q.,Zhang H. Q.,Li M. X.. Mining spatial information to investigate the evolution of karst rocky desertification and its human driving forces in Changshun, China. 2013.

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