干旱区生态环境知识资源中心(Arid): 吉林省西部土壤沙化、盐碱化和草原退化演变的时空过程研究

Arid

	吉林省西部土壤沙化、盐碱化和草原退化演变的时空过程研究
其他题名	A study on the process of grassland degradation, land salinization and soil desertification in the west of jilin province
	周云轩 1; 付哲 2; 刘殿伟 1; 王黎明 2; 王磊 2
来源期刊	吉林大学学报. 地球科学版
ISSN	1671-5888
出版年	2003
卷号	33 期号:3 页码:348-354
中文摘要	基于地理信息系统平台，对吉林省西部1986年、1996年和2000年的土壤沙化、盐碱化和草原退化(简称三化)专题数据、土地利用状况数据、基础地理数据、人文和经济统计数据等进行融合处理和分析。结果显示：(1)15年间，吉林省西部地区草场退化速率呈增加趋势，草地面积大幅度减少，尤以松原、白城、洮南和通榆的草场退化情况严峻。整个西部的草地重心从通榆和大安交界处向东北方向漂移，幅度有11km。(2)吉林省西部地区盐碱化土地面积明显增加。盐碱化主要集中在洮南南部和乾安、前郭，呈西北东南方向延伸。盐碱地重心一直在通榆和大安交界处。(3)尽管沙地面积略有减少，但是呈不稳定状态，有从通榆向大安、镇赉、乾安、松原推进的趋势。沙地重心从通榆中部向东漂移，距离达30km。(4)西部地区的三化空间动态变化特征是呈边缘扩充、内部充填等增加模式和边缘退缩、成片退缩等减少模式。
英文摘要	Grassland degradation, land salinization and soil desertification(DSD) are typical eco-en-vironmental problems in the west of Jilin Province. Based on a GIS platform, the land use information from 1986,1996 and 2000 are processed and analyzed. Some results are concluded as follows: ①Grassland degradation rate grew faster in the study period of 15 years, which appear as the rapid decrease of grassland in area. The most severe places occur in Songyuan, Baicheng, Taonan and Tongyu. The gravity centre of the grassland in the whole west is moving from the border of Tongyu and Da’an towards to northeast, giving a distance about 11 km. ②The salinized land is obviously increased in area and degree, which are mainly distributed in the south Taonan and Qian’an, Qianguo, appearing a northwestsoutheast stretching. The gravity centre of the salinized land did not move much, which located in between Tongyu and Da’an. ③The soil desertification is slightly decreasing in area, but it appear unstable, which tends to moving from Tongyu towards Da’an, Zhenlai, Qian’an and Songyuan. Meanwhile the gravity centre of the soil desertification is shifting from the middle of Tongyu to the east with a distance about 30 km. ④ The spatial variation characteristic of the DSD in western Jilin Province appear many types of pattern, such as edge expansion, inwards filling, marginal deflation, and region deflation, etc.
中文关键词	吉林省西部 ; 土壤沙化 ; 盐碱化 ; 草原退化 ; 地理信息系统 ; 生态环境演化
英文关键词	the west of Jilin Province soil desertification land salinization grassland degradation GIS eco-environmental evolvement
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:1339154
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204161
作者单位	1.中国科学院东北地理与农业生态研究所, 长春, 吉林 130012, 中国; 2.吉林大学地球探测科学与技术学院, 长春, 吉林 130026, 中国
推荐引用方式 GB/T 7714	周云轩,付哲,刘殿伟,等. 吉林省西部土壤沙化、盐碱化和草原退化演变的时空过程研究[J],2003,33(3):348-354.
APA	周云轩,付哲,刘殿伟,王黎明,&王磊.(2003).吉林省西部土壤沙化、盐碱化和草原退化演变的时空过程研究.吉林大学学报. 地球科学版,33(3),348-354.
MLA	周云轩,et al."吉林省西部土壤沙化、盐碱化和草原退化演变的时空过程研究".吉林大学学报. 地球科学版 33.3(2003):348-354.