干旱区生态环境知识资源中心(Arid): 科尔沁沙地风沙与湖泊景观演变及影响因素分析

Arid

	科尔沁沙地风沙与湖泊景观演变及影响因素分析
其他题名	Landscape Evolution and Influence Factors of Aeolian Sand and Lakes in Horqin Sandy Land
	杜会石 1; 哈斯额尔敦 2; 李爽 3; 赵艺源 3; 孙小旭 3
来源期刊	地理科学
ISSN	1000-0690
出版年	2018
卷号	38 期号:12 页码:2109-2117
中文摘要	以科尔沁沙地为研究区,基于1975~2015年中等分辨率卫星影像,采用景观格局指数计算及数理统计分析方法,研究该区近40 a来沙地与湖泊景观格局的变化过程,并对其影响因素进行分析。结果表明,近40 a科尔沁沙地风沙地貌覆盖面积呈减少趋势,年均变化率-0.31%,而灌草丛沙丘地、抛物线形沙丘等固定半固定型沙丘面积增加,沙地逆转化趋势明显。沙地景观蔓延度整体下降了2.13,优势度增加了16.55,说明科尔沁沙地斑块连通性与多样性降低。湖泊群面积净减61.24 km~2,斑块数减少了66个,湖泊群质心朝ESE方向迁移了35.76 km,湖泊景观分离度呈下降趋势,而集群性有所增加、景观演变趋于稳定。气候因素和人类活动因素是科尔沁沙地演化的驱动因素,尤其社会经济和政策因素可短时间内促进沙地景观的演变过程。
英文摘要	The Horqin sandy land is located in the ecotone between agriculture and animal husbandry in northern of China. The development of sandy land is affected by the interaction of wind and water, and the evolution of Lake Group landscape is closely related to the process of aeolian sand surface evolution. The Horqin sandy land as the study area, 1975-2015 medium resolution satellite images based on the landscape pattern index calculation and statistical analysis methods, focus on the change process of lake and sand landscape pattern, and analyze the influence factors in recent 40 years. The results showed that: in recent 40 years, Horqin desert landform coverage area showed a decreasing trend, the average annual rate of change -0.31%, while shrub dunes, parabolic dunes fixed semi fixed dune type sand area increased significantly, inverse transformation trend. The landscape spread degree of sandy land decreased by 2.13 and the dominance increased by 16.55, indicating that the connectivity and diversity of patches in Horqin sandy land decreased. Lakes area net reduction is 61.24 km~2, the number of patches decreased by 66, the lake group centroid toward ESE 3 576 km~2 migration, the separation of lake landscape degree decreased, while the cluster of lake landscape increased, landscape evolution tends to be stable, and the sandy land and Lake landscape in the dynamic evolution process. The factors of economic and human activities are the driving factors of the evolution of Horqin sandy land, especially social economic factors and policy factors can promote or inhibit the evolution process of sandy landscape in a short time. The study provides the basis for the sustainable development of the ecological environment in Horqin sandy land.
中文关键词	沙丘格局 ; 景观演变 ; 驱动因素 ; 湖泊群 ; 科尔沁沙地
英文关键词	sand dune pattern landscape evolution driving factors lake group Horqin sandy land
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6407818
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237410
作者单位	1.吉林师范大学旅游与地理科学学院;;北京师范大学地理科学学部, ;;, 四平;;, 吉林;;北京 136000;;100875, 中国; 2.北京师范大学地理科学学部, 北京 100875, 中国; 3.吉林师范大学旅游与地理科学学院, 四平, 吉林 136000, 中国
推荐引用方式 GB/T 7714	杜会石,哈斯额尔敦,李爽,等. 科尔沁沙地风沙与湖泊景观演变及影响因素分析[J]. 北京师范大学,2018,38(12):2109-2117.
APA	杜会石,哈斯额尔敦,李爽,赵艺源,&孙小旭.(2018).科尔沁沙地风沙与湖泊景观演变及影响因素分析.地理科学,38(12),2109-2117.
MLA	杜会石,et al."科尔沁沙地风沙与湖泊景观演变及影响因素分析".地理科学 38.12(2018):2109-2117.