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| 科尔沁沙地景观格局变化的研究 | |
| 引用本文： | 包慧娟,姚云峰,张学林,李振山.科尔沁沙地景观格局变化的研究[J].干旱区资源与环境,2003,17(2):83-88. |
| 作者姓名： | 包慧娟 姚云峰 张学林 李振山 |
| 作者单位： | 1. 中科院东北地理与农业生态研究所,长春,130012 2. 内蒙古农业大学生态环境学院,呼和浩特,010019 3. 北京大学环境科学中心,北京,100871 |
| 基金项目： | 《国家重点基础研究发展规划》项目“中国北方沙漠化过程及其防治研究”资助。 |
| 摘 要： | 本文以1995年和2000年的遥感影像为信息源,利用GIS图像、数据处理功能,获取景观要素图斑,得出图斑的数量、周长、面积等特征,并根据景观生态学的原理和方法,计算研究地区的景观指数,通过对景观指数的分析,揭示该地区沙漠化现状及动态。结果表明,研究地区各种类型沙漠化土地总面积37.4万hm2,占总土地面积的39.1％;植被盖度小于30％的较严重沙漠化土地从1995年到2000年以61.0hm2/年的速度扩展;景观破碎度变大,反映出入类活动对景观的干预作用不断增强;沙漠化景观要素的形状指数变化表现出内、缘比变大,不利于沙漠化土地的自然恢复。研究地区沙漠化是一个发展的过程。 |
| 关 键 词： | 科尔沁沙地 遥感 地理信息系统 沙漠化 景观格局 |
| 文章编号： | 1003-7578(2003)02-083-06 |
| 修稿时间： | 2002年7月19日 |
Study on Changes of Landscape Patterns in Keerqin Sandy Land |
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| BAO Hui-juan YAO Yun-feng ZHANG Xue-lin LI Zhen-shan.Study on Changes of Landscape Patterns in Keerqin Sandy Land[J].Journal of Arid Land Resources and Environment,2003,17(2):83-88. | |
| Authors: | BAO Hui-juan YAO Yun-feng ZHANG Xue-lin LI Zhen-shan |
| Institution: | Northeast Institute of Geography and Agricultural Ecology CAS; Ecological Environmental College of Agricultural University of Inner - Mongolia; Institute of Environmental Science of Beijing University |
| Abstract: | Characteristic of number ,periphery and areas of patch had been obtained using GIS image and data process based on image of remove sensing in 1995 and 2000 as information sources. Meanwhile, landscape index in study area was calculated according to principle and method of landscape ecology, and desertification status and dynamic in this area was revealed by analysis of landscape index. The results indicated that it is 37. 4× 104 hm2 of several types of desertification land, accounted for 39. 1% of total land areas in this region. Serious desertification land that is increased with 61. 0 hm2 of magnification rate for each year from 1995 to 2000. If vegetation cover rate is lower than 30%. Landscape crush was increased, which reflected that the interference of human being has been keeping the strengthening. It was shown that the ratio of area and periphery had been increased and it was not useful for natural restoration and remediation of desertification land . |
| Keywords: | Keerqin sandy land Remove sensing GIS Desertification landscape pattern |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |