关键词: 人工林, 水稳性团聚体, 土壤团聚体稳定性, 土壤有机碳, 北京

Abstract: Based on GIS technology and by using moving window method, the charact eristics of landscape pattern in Northeast China in 2006 and the relationships b etween these characteristics and environmental factors such as precipitation, ai r temperature, altitude and human activities were studied. In the study area in 2006, forest land had the largest proportion, followed by the cultivated land, occupying 6169% and 2511% of the total respectively, and the landscape diversity had the characteristics of circle-zoning structur e, which provided a buffer region for fragmented and sensitive regions, making t he adverse ecological consequences be reduced to or restricted in a definite sca le. The correlation coefficients of landscape indices with precipitation and air temperature were less than 04, and those with altitude were less than 007, il lustrating that the heterogeneity of landscape pattern in study area was not dep endent on single natural factors.

Key words: forest plantation, water-stable aggregate, soil aggregate stability, soil organic carbon, Beijing.