%0 Journal Article
%T Spatial heterogeneity of soil moisture after raining at forest-grassland landscape boundary in hilly area of Loess Plateau<br>黄土丘陵区林草景观界面雨后土壤水分空间变异规律
%A You WenZhong
%A Ceng DeHui
%A Liu MingGuo
%A Song XiDe
%A Xie YanHui
%A Zhang Yong
%A <br>尤文忠
%A 曾德慧
%A 刘明国
%A 宋西德 叶彦辉
%A 张永
%J 应用生态学报
%D 2005
%I 
%X Soil moisture is a main factor limiting vegetation restoration in semi-arid region. In this paper, the spatial variability of different layers soil moisture after raining at the forest-grassland boundary in hilly area of Loess Plateau were studied by traditional and geostatistical analysis methods. The results showed that the moisture content in surface (0 - 10 cm) and subsurface soil layer (10 - 20 cm) of grassland was higher than that of forestland. The two layers soil moisture content at forest-grassland boundary showed a small variation but an obvious ecological distribution. By using moving split-window techniques, it was obtained that the width of edge influence in surface and subsurface layer was 8 and 6 m, respectively. Geostatistical analyses showed that the spatial distribution of two layers soil moisture had a pure nugget effect in grassland, linear model in forestland, and spherical model in forest-grassland boundary. The spatial heterogeneity of two layers soil moisture was higher at forest-grassland boundary than at forestland and grassland, which had a stronger spatial dependence and autorelation. Kriging maps expressed the spatial structural characters. The distribution of soil moisture in two layers showed a strip shape near forest edge, and a patch shape far from the edge.
%K Forest-grassland boundary
%K Soil moisture content
%K Geostatistics
%K Spatial distribution<br>森林-草地界面
%K 土壤水分
%K 地统计学
%K 分布格局
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=134F8F78114CABED&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=9CF7A0430CBB2DFD&sid=121258A1E8A61CDD&eid=24134956E37ADE2E&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=7&reference_num=27