基于移动窗口法的中国东北地区景观格局

基于GIS技术，利用移动窗口法，对2006年中国东北地区景观格局特征及其与水分梯度、热量梯度、海拔因子和人为干扰因子的相关关系进行了研究.结果表明：2006年，中国东北地区林地景观所占比例最大，为61.69%，耕地次之，占25.11%；中国东北地区的景观多样性具有圈层结构的特点，为破碎化程度较高的敏感区域提供了缓冲区间，使不良的生态后果可以控制在一定区域内；研究区景观格局指数与水分梯度、热量梯度的相关系数均在0.4以下，与海拔因子的相关系数在0.07以下，相关性不高说明研究区景观格局的异质性不是由单一的自然因素所决定.

Landscape pattern in Northeast China based on moving window method.

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.