内蒙古和林格尔农牧交错区景观特征分析

内蒙古和林格尔农牧交错区是内蒙古农牧交错带的一部分.应用遥感影像,结合地面调查,绘制了研究区景观类型图.在地理信息系统的支持下,选取多种景观指数,分别从斑块数、斑块面积、斑块周长、分维数及多样性指数等方面,对研究区景观格局特征和多样性进行分析.结果表明:研究区景观总体特征是一个典型的农林牧景观镶嵌体,其西北部平原区在人类漫长的垦殖及放牧活动干扰下,表现出明显地高度的人类管理景观特征,而东南部的丘陵沟壑、低山区则一定程度上保持了自然景观的特征.

Landscape Characteristics Analysis in the HeLinGeErAgro-pastoral Region,Inner Mongolia

The HeLinGeEr region is an area of typical agro-pastoral landscape.Selecting the north-west part of the county HeLinGeEr as the study area, we complied the landscape types map of the study region by combining TM image and field survey. On a GIS platform, applying a number of landscape pattern indices such as patch number, area, perimeter, fractal dimension, diversity index, evenness index and fragmentation index etc., we analyzed the landscape pattern of study region. Results show that the landscape pattern in the study region is a typical agro-pastoral mosaic. The area of farming landscape was 15.36% of the total study area, while the forest landscape was 16.11% of the total area, and grassland is 33.30%. Because of a long and strong disturbances of human on this region (such as cultivation and grazing), the northwest part of study area has a characteristics of highly governed landscape,however, the southeast remains some natural characteristics.