期刊
CATENA
卷 83, 期 1, 页码 87-93出版社
ELSEVIER
DOI: 10.1016/j.catena.2010.07.006
关键词
Vegetation structure; Vegetation indices; Stratified vegetation cover index; Soil erosion assessment; C factor; Digital imaging
资金
- National Basic Research Program of China [2007CB407203]
- National Natural Science Foundation of China [40871246]
- CAS [2009y236]
Vegetation cover is an important parameter used in assessing the relationship between vegetation and soil erosion However, the intensity of soil erosion actually changes not only with vegetation cover but also with differences in vegetation type and structure. How to integrate the cumulative effect of the different growth forms making up a vegetation community into one index for inclusion in soil loss predictive equations is an open research question This paper proposes a method to separately measure the cover of different vegetation strata, estimate their contribution to reducing soil loss, and then to integrate this into a single vegetation index called the stratified vegetation cover index (C-s). The results show that Cs is more effective than projected vegetation cover for the assessment of soil erosion and also can overcome the disadvantages of vegetation indices such as NDVI This means that C-s is a good substitute for vegetation cover or cover-related vegetation indices in studies on the relationship between vegetation and soil erosion. The concept of Cs may help the local governors or forest department understand the importance of vegetation structure and make right management decisions (C) 2010 Elsevier B.V. All rights reserved
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