干旱区生态环境知识资源中心(Arid): 科尔沁沙地生态环境特征分析

Arid

	科尔沁沙地生态环境特征分析
其他题名	Analysis on the Ecological Environment Characteristics in a Farming-Pasture Ecotone in the Horqin Sandland
	常学礼; 崔步礼; 陈雅琳; 薛莲荣
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2005
卷号	28 期号:3 页码:336-341
中文摘要	科尔沁沙地典型地区生态环境特征的分析表明,40年来科尔沁沙地的年均气温呈逐渐增加的趋势,与全球气温升高变化一致.年降水量的变化呈波动式增加,特别是从20世纪70年代中期到90年代中期年降水量的波动幅度增大.气候类型年际间呈半干旱、半湿润和湿润交替出现,其中半干旱气候出现频率为47.5%,半湿润气候为45%,湿润气候为7.5%.沙尘暴的发生日数从1961年以来呈下降趋势,到1984年以后低于平均水平.科尔沁沙地的土壤和植被的异质性决定了该区域的农牧交错特征,特定的风沙环境促进了农牧交错特征的变化.
英文摘要	The Horqin Sandland (42°20’-44°28’N, 113°30’- 123°30’E) is located in the western part of northeast China, its total area is 5.06 X 104 km2, and Tongliao City in Inner Mongolia Autonomous Region is the core region of the Horqin Sandland. The Horqin Sandland is a transitional zone between the Northeast Plain and the Inner Mongolian Plateau, and in the sandland it belongs to the semi-humid and semi-arid fluctuation climate. The average annual temperature was 6.8°C during the 40-year period from 1961 to 2000, and. the 40-year average annual precipitation was 366.3 mm. However, under the background of global warming, the productivity and biodiversity of the sandland are reduced, and the ecological environment degeneration including land desertification and steppe degeneration becomes more serious. In this paper, the ecological environment characteristics in a typical region of the Horqin Sandland are analyzed. The result shows that the annual temperature in the Horqin Sandland has been increased since recent 40 years, which accords with global warming. The annual precipitation has been increased in a fluctuation way since recent 40 years, and the fluctuation extent of annual precipitation was high during the period from the mid-1970s to .the mid-1990s. Interannually, the semiarid, semihumid and humid climates occur alternately, in which the occurring frequencies of semiarid, semihumid and humid climates are 47.5%, 45% and 7.5% respectively. The days of occurring dust storms have been reduced since 1961 and been below the average from 1984. The soil and vegetation heterogeneity determines the features of farming-pasturing ecotone in the Horqin Sandland, and the change of the features of farming-pasturing ecotone is caused by the peculiar sand drift environment in the sandland.
中文关键词	风沙环境 ; 农牧交错 ; 异质性 ; 科尔沁沙地
英文关键词	sand drift environment farming-pasturing ecotone heterogeneity the Horqin Sandland
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:1995036
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206149
作者单位	鲁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,崔步礼,陈雅琳,等. 科尔沁沙地生态环境特征分析[J],2005,28(3):336-341.
APA	常学礼,崔步礼,陈雅琳,&薛莲荣.(2005).科尔沁沙地生态环境特征分析.干旱区地理,28(3),336-341.
MLA	常学礼,et al."科尔沁沙地生态环境特征分析".干旱区地理 28.3(2005):336-341.