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2007•Bulletin of Soil and Water ConservationRequires access

Research on Vegetation Changes in Drainage Area Based on Integration of Streams Network and NDVI——A Case Study in Xunhe Watershed

Liang Zhong Yi

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Abstract

Stream network structure in Xunhe watershed is simulated using GIS methods for the buffering area construction.NDVI in 1997 and 2004 is calculated to examine its relationship with stream order.Results indicate that stream network in mountain area can be well simulated,stream order and NDVI are closely re- lated,and the NDVI in 2004 is higher than in 1997.These suggest that the eco-environment in Xunbe water- shed has been improvement in recent years.

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Stream network structure in Xunhe watershed is simulated using GIS methods for the buffering area construction.NDVI in 1997 and 2004 is calculated to examine its relationship with stream order.Results indicate that stream network in mountain area can be well simulated,stream order and NDVI are closely re- lated,and the NDVI in 2004 is higher than in 1997.These suggest that the eco-environment in Xunbe water- shed has been improvement in recent years.

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Available abstract

Stream network structure in Xunhe watershed is simulated using GIS methods for the buffering area construction.NDVI in 1997 and 2004 is calculated to examine its relationship with stream order.Results indicate that stream network in mountain area can be well simulated,stream order and NDVI are closely re- lated,and the NDVI in 2004 is higher than in 1997.These suggest that the eco-environment in Xunbe water- shed has been improvement in recent years.

Key concepts: Normalized Difference Vegetation Index, Watershed, STREAMS, Environmental science, Vegetation (pathology), Hydrology (agriculture), Remote sensing, Drainage

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