IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2009  > Vol6 No.3
Spatial Distribution of Land Cover and Vegetation Activity along Topographic Gradient in an Arid River Valley, SW China
Liu Wen; Xu Xianli; Luo Jiancheng; Shen Zhanfeng; Zhong Qiuhai
Corresponding AuthorXu, XL
2009-09
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume6Issue:3Pages:274–285
AbstractAnthropogenic activities have become more and more important in characterizing the landscape, but their impacts are still restricted by natural environments. This paper discusses the interactions of anthropogenic activity, vegetation activity and topography through describing the spatial distribution of land cover and vegetation activity (represented by Normalized Difference Vegetation Index, NDVI) along topographic gradient in a mountainous area of southwestern China. Our results indicate that the existing landscape pattern is controlled by anthropogenic activities as well as topographic factors. Intensive anthropogenic activities mainly occur in areas with relatively low elevation, gentle and concave slopes, as these areas are easy and convenient to attain for human. Because of the destruction by human, some land cover types (mainly grassland and shrub) are only found in relatively harsher environments. This study also finds that topographic wetness index (M used in other places only reflects runoff generation capacity, but not indicate the real spatial pattern of soil water content in this area. The relationships between NDVI and W, and NDVI and length slope factor (LST)show that runoff and erosion have complex effects on vegetation activity. Greater values of W and LSF will lead to stronger capacity to produce runoff and transport sediment, and thereby increase soil water content and soil deposition, whereas beyond a certain threshold runoff and erosion are so strong that they would destruct vegetation growth. This study provides information needed to successfully restore native vegetation, improve land management, and promote sustainable development in mountainous areas, especially for developing regions.
KeywordVertical Distribution Of Land Cover Anthropogenic Activity Vegetation Activity Environmental Variability China
Language英语
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6028
CollectionJournal of Mountain Science_Journal of Mountain Science-2009_Vol6 No.3
Recommended Citation
GB/T 7714
Liu Wen,Xu Xianli,Luo Jiancheng,et al. Spatial Distribution of Land Cover and Vegetation Activity along Topographic Gradient in an Arid River Valley, SW China[J]. JOURNAL OF MOUNTAIN SCIENCE,2009,6(3):274–285.
APA Liu Wen,Xu Xianli,Luo Jiancheng,Shen Zhanfeng,&Zhong Qiuhai.(2009).Spatial Distribution of Land Cover and Vegetation Activity along Topographic Gradient in an Arid River Valley, SW China.JOURNAL OF MOUNTAIN SCIENCE,6(3),274–285.
MLA Liu Wen,et al."Spatial Distribution of Land Cover and Vegetation Activity along Topographic Gradient in an Arid River Valley, SW China".JOURNAL OF MOUNTAIN SCIENCE 6.3(2009):274–285.
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