地理学报 ›› 2012, Vol. 67 ›› Issue (7): 917-928.doi: 10.11821/xb201207005
段翰晨1,2, 王涛1, 薛娴1, 郭坚1, 文星1,2
收稿日期:
2012-03-07
修回日期:
2012-03-31
出版日期:
2012-07-20
发布日期:
2012-07-20
通讯作者:
王涛(1959-), 男, 上海市人, 博士生导师, 研究员, 中国地理学会会员(S110000503M), 主要从事沙漠环境与沙漠化研究。E-mail: wangtao@lzb.ac.cn
作者简介:
段翰晨(1984-), 男, 陕西西安人, 博士研究生, 主要从事沙漠化遥感监测与反演。E-mail: duanhanchen09@163.com
基金资助:
国家自然科学基金项目(40971162); 国家重点基础研究发展规划(973) 项目(2009CB421308)
DUAN Hanchen1,2, WANG Tao1, XUE Xian1, GUO Jian1, WEN Xing1,2
Received:
2012-03-07
Revised:
2012-03-31
Online:
2012-07-20
Published:
2012-07-20
Supported by:
National Natural Science Foundation of China, No.40971162; The National Basic Research Program of China, No.2009CB421308
摘要: 利用1975 年MSS影像, 1992 年、2006 年、2010 年TM影像和1999 年ETM +影像等5 个时期遥感影像为数据源, 提取奈曼旗35 年来沙漠化土地动态变化信息, 并在此基础上, 探讨了区域沙漠化土地景观格局时空演变特征, 旨在为科尔沁地区沙漠化治理和区域生态环境恢复与重建提供参考。结果表明:(1) 35 年来, 奈曼旗沙漠化土地面积总体呈逆转的趋势, 沙漠化总面积减少了123.43 km2, 沙漠化土地主要经历了先增加后减少的过程;(2) 景观格局呈波动性变化, 1999 年以前, 景观形状指数和多样性指数增加, 蔓延度和聚集度减小, 破碎化程度加强, 沙漠化程度上升, 沙漠化主导类型为中度和重度沙漠化, 1999 年以后破碎化程度变弱, 沙漠化程度明显下降, 沙漠化主导类型转变为中度和轻度沙漠化;(3) 1975-2010 年间轻度和中度沙漠化土地重心迁移最为明显, 轻度沙漠化土地重心向东北方向偏移了6.35 km, 中度沙漠化土地重心向西南方向偏移了7.24 km。
段翰晨, 王涛, 薛娴, 郭坚, 文星. 科尔沁沙地沙漠化时空演变及其景观格局——以内蒙古自治区奈曼旗为例[J]. 地理学报, 2012, 67(7): 917-928.
DUAN Hanchen, WANG Tao, XUE Xian, GUO Jian, WEN Xing. Spatial-temporal Evolution of Aeolian Desertification and Landscape Pattern in Horqin Sandy Land: A Case Study of Naiman Banner in Inner Mongolia[J]. Acta Geographica Sinica, 2012, 67(7): 917-928.
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