西安理工大学学报2011，Vol.27Issue(2)：145-150,6.
文安驿流域植被覆盖度时空分异 及其与地貌因子关系研究
Spatio-Temporal Variations in Vegetation Coverage and Correlation with Geomorphologic Factors in Wenanyi Watershed
摘要
Abstract
The factor relationship of the vegetation coverage on the Loess Plateau is monitored dynamically , whose coupling relationship between the variation of vegetation coverage and watershed geomorphologi-cal factors is also analyzed in a quantitative way in watershed scale. With Wenanyi watershed as the research area, the calculated watershed vegetation coverage from multi-temporal remote sensing data and the spacial analysis and GIS digital to pographical analysis method are used to analyse the coupling relationship between the spacial-temporal variation of vegetation coverage and the geomorphological factors in the research area. The research findings indicated that the vegetation coverage in Wenanyi watershed has in resent decade, appeared to have the rising tendency with the vegetation recoverage margin larger in 2007 than in 2002, but the watershed vegetation coverage appears to have the dropping tendency with an increase in the altitude above sea level, and the vegetation coverage decreases with an increase in the slope degree. The vegetation coverage in the range with the slope gradient over 25° has an increasing margin relatively larger in the year of 1999 and 2007 than the year of 2002. Watershed vegetation coverage on the north slope is relatively higher than that on the south slope. Accordingly, vegetation coverage magnitude on each slope direction as a whole appears to have a uniform law.关键词
黄土高原/流域植被覆盖度/地貌因子/时空分异/遥感和地理信息系统技术Key words
Loess Plateau/ watershed vegetation coverage/ geomorphologic indicators/ spatio-temporal differences/ GIS and RS分类
农业科技引用本文复制引用
程圣东,李占斌,鲁克新,李鹏,张林红..文安驿流域植被覆盖度时空分异 及其与地貌因子关系研究[J].西安理工大学学报,2011,27(2):145-150,6.基金项目
国家自然科学基金资助项目(40971161,41071182). （40971161,41071182）
