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作 者 ：朱丽,秦富仓*,姚云峰,余新晓

期 刊 ：生态学报 2010年 30卷 16期 页码：4287~4294

关键词：水文响应；森林植被/土地覆被；华北土石山区；

Keywords:hydrological response, land use/land cover, rocky Mountain area of North China,

摘 要 ：根据北京市红门川流域原有1∶1万土地利用图，结合流域1990年、1995年、2000年和2005年4期遥感影像，在GIS支持下，得到4期土地利用图，采用Arc View分析获得空间数据和属性数据。并利用研究区逐日降水量和径流量数据，从年径流量、汛期（6—9月份）径流量和单次径流量3个层次，分析不同土地利用时期的水文响应。结果表明：不同土地利用变化对流域径流具有显著影响。2001—2005年植被条件较好的土地利用较1990—1995年和1996—2000年产流有所减少，多年平均径流系数下降了70%以上。不同土地利用在相同降水条件下的产流仅在生长季节具有明显差异，也就是说土地利用变化对产流的影响具有季节性，在枯水季节无显著影响。2001—2006年的单次产流均小于1990—1995和1996—2000年的单次产流，仅为前期的1/3，降水利用率提高，发生洪涝灾害的可能性减小。

Abstract:Based on the land-use map (1∶10000) and the remote sensing images(1990,1995,2000 and 2005) of Hongmenchuan watershed of Beijing, the spatial and attribute data of these 4 periods were obtained using ArcView software. Hdrological response to different land use periods on annual runoff, flood season and the single runoff was analyzed with daily precipitation and runoff data in the study area). The results showed that: land use change of Hongmenchuan watershed of Beijing had significant effect on the annual runoff. During 2001-2005 the runoff yield decreased by more than about 70% than that during 1990-1995 and 1996-2000 with the revegetation. Under the same precipitation condition, the runoff yields in different land use types are difference obviously in growth reason, and it is just the apposite in drought period. The single runoff yield during 2001-2006 was only 1/3 of that during 1990-1995 and 1996-2000, which indicated that rainfall use efficiency improved and the possibility of flood decreased.

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