干旱区生态环境知识资源中心(Arid): 科尔泌地区流动沙地景观破碎化与沙漠化过程分析

Arid

	科尔泌地区流动沙地景观破碎化与沙漠化过程分析
其他题名	Analysis of the Landscape Fragmentation of Mobile Dune and the Desertification Process in Horqin Sandy Land Region
	常学礼 1; 高玉葆 1; 何兴东 1; 陈雅琳 2; 崔步礼 2
ISSN	0465-7942
出版年	2006
卷号	39 期号:1 页码:84-89
中文摘要	借助RS和GIS技术提取了科尔泌沙地典型地区不同时期流动沙丘的空间分布信息，通过对景观数量和形状破碎化指数的计算分析，探讨了科尔泌沙地的主景观要紊流动沙丘在时间尺度上的变化趋势和及其对沙漠化过程的响应．结果表明：流动沙丘景观数量破碎化在时间尺度上的变化趋势呈波动下降趋势，其中1974年在破碎化程度最高，1958年和1998年相对最低，这一变化趋势与同期的沙漠化过程呈线性正相关．流动沙丘景观形状破碎化指数在时间尺度上的变化呈直线型逐渐增加的趋势，表明科尔泌沙地近40年来的各种土地利用过程的变化对流动沙丘斑块形状的影响都起促进作用．从形状破碎化与沙漠化的相互关系来看，随沙漠化程度的增加将导致形状破碎化指数的降低．总的来看，在科尔泌沙地景观中，干扰过程的交替使流动沙丘景观数量破碎化指数呈下降趋势，使形状破碎化的程度呈增加的趋势．
英文摘要	In this paper, by means of RS and GIS from the typical area in Korqin Sandy Land, the spatial distribution information of mobile dunes were obtained to analyze the chang ing trends of landscape fragmentation of the mobile dunes and to discuss the relationships between the fragmentation and desertification process by using the number and shape of fragmentation indices. The results showed that the number fragmentation index decreased from 1958 to 1998 period, and the maximum fragmentation index occurred in 1974 and relative minimum fragmentation indices emerged in 1958 and 1998 during past four decades. There was a significant positive lineal relation between the numbers of fragmentation and the desertification process. In addition, findings also illustrated that fragmentation index assumed straight lineal shape changing at same temporal scale, which indicated that different land use processes pro moted the shape change of mobile dune in recent decades. The regression outputs showed that the shape fragmentation decreased with the increase of desertification degree. In a word, the alternate disturbances that destroyed vegetation or rehabilitated vegetation by human activity brought about the decrease of the number fragmentation indices and the increase of shape fragmentation index of the mobile dune landscape in Horqin sandy land.
中文关键词	流动沙丘 ; 景观破碎化 ; 沙漠化 ; 科尔泌沙地
英文关键词	mobile dune landscape fragmentation desertification horqin sandy land
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2312661
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219944
作者单位	1.南开大学生命科学学院, 天津 300071, 中国; 2.胶东大学地理与资源管理学院, 烟台, 山东 264025, 中国
推荐引用方式 GB/T 7714	常学礼,高玉葆,何兴东,等. 科尔泌地区流动沙地景观破碎化与沙漠化过程分析[J],2006,39(1):84-89.
APA	常学礼,高玉葆,何兴东,陈雅琳,&崔步礼.(2006).科尔泌地区流动沙地景观破碎化与沙漠化过程分析.,39(1),84-89.
MLA	常学礼,et al."科尔泌地区流动沙地景观破碎化与沙漠化过程分析".39.1(2006):84-89.