干旱区生态环境知识资源中心(Arid): 浑善达克沙地土地沙漠化时空演变规律研究

Arid

	浑善达克沙地土地沙漠化时空演变规律研究
其他题名	Research on Spatio-Temporal Change of Sandy Desertification in Hunshandake
	康相武 1; 吴绍洪 2; 刘雪华 3
ISSN	1009-2242
出版年	2009
卷号	23 期号:1 页码:1-6
中文摘要	通过建立京津风沙源核心地带-浑善达克沙地土地沙漠化程度五级分类体系和遥感影像解译标志,并对1980年代中期、1990年代末期成像的Landsat-TM数字影像以及1970年代中期成像的Landsat-MSS数字影像进行人机交互式解译,并应用空间分析和转移矩阵的方法对该区土地沙漠化的演变过程进行分析,应用土壤分布图、地形图等相关环境条件数据进行叠加分析该区土地沙漠化演变过程的空间分异规律.结果表明,该区1970年代中期、1980年代中期、1990年代末期土地沙漠化面积占区域土地总面积分别占到50.8%,56.6%和64.7%,1970年代中期至1980年代中期、1980年代中期至1990年代末期土地沙漠化扩张平均速度分别为235km~2/a和335 km~2/a.在10～15 a的时间尺度上土地沙漠化程度加重与减轻过程中存在渐变与跃变两种变化方式,因此该区的土地开发利用需要极其慎重,防止措施不当导致土地在短时间内发展成为重度或极重度沙漠化土地.在沙漠化演变过程中,土地沙漠化程度加重的区域主要分布在半固定风沙土土壤类型区域内、在坡地与坡脚地形区域内、在沿河谷与河岸地貌区域内,土地沙漠化程度减轻的区域主要分布在河流沿岸、湖泊周围、沙地中的地势较低处;土地沙漠化程度始终保持稳定的区域地形多为山地、丘陵、河岸.土壤类型多为栗钙土和黑钙土.在土地沙漠化的治理过程中,应该针对该特征规律采取相应的开发利用或者治理措施.
英文摘要	In this paper, five-grade sandy desertification classification system and remote sensing interpretation marks of the core zone of wind and sand source of Beijing-Tianjin region: Hunshandake sandy land were built. Basing on the sandy desertification classification results by human-computer interaction interpretation with the Landsat TM images in the middle of 1980s and late 1990s, and Landsat MSS images in the middle of 1970s, the authors analyzed the evolution processes of sandy desertification in this region by spatial analysis and transfer matrix, and also analyzed the spatial variation and distribution of the processes of sandy desertification by overlaying the environmental reference data, such as soil map, landform map and so on. The results showed that the area of sandy desertification land in this region in the middle of 1970s, the middle of 1980s and late 1990s accounted for 50.8%, 56.6% and 64.7% of the area of whole region respectively. The average speed of sandy desertification expansion was 235 km~2/a and 335 km~2/a during the period from the middle of 1970s to the middle of 1980s and the period from the middle of 1980s to late 1990s respectively. At 10 to 15 years temporal scale, there existed gradually change and abruptly change in the expansion and reversion processes of sandy desertification in this region. According to this, it must be careful in land use and development, and prevent unsuitable measures leading to severe and every extreme sandy desertification in a short time. In the evolution processes of sandy desertification, regions with the expansion of sandy desertification mainly in the regions dominated by semi fixed aeolian sandy soil, the regions with slope-lands and slope heel and the regions along valley and riparian; regions with reversion of sandy desertification mainly in regions along rivers, regions around lakes and sandy land with lower topography; regions with no change of sandy desertification mainly in mountains, hills and riparian, where dominated by chestnut soil and chernozem. In the processes of sandy desertification rehabilitation, development and rehabilitation measures should be taken according to the characteristics and laws of sandy desertification in this region.
中文关键词	浑善达克 ; 土地沙漠化 ; 时空演变
英文关键词	Hunshandake sandy desertification spatio-temporal change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:3562721
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224177
作者单位	1.中国科学技术信息研究所, 北京 100038, 中国; 2.中国科学院地理科学与资源研究所, 北京 100101, 中国; 3.清华大学环境科学与工程系, 北京 100084, 中国
推荐引用方式 GB/T 7714	康相武,吴绍洪,刘雪华. 浑善达克沙地土地沙漠化时空演变规律研究[J]. 中国科学院地理科学与资源研究所,2009,23(1):1-6.
APA	康相武,吴绍洪,&刘雪华.(2009).浑善达克沙地土地沙漠化时空演变规律研究.,23(1),1-6.
MLA	康相武,et al."浑善达克沙地土地沙漠化时空演变规律研究".23.1(2009):1-6.