干旱区生态环境知识资源中心(Arid): 锡林郭勒盟风沙源治理区防风固沙功能变化评估

Arid

	锡林郭勒盟风沙源治理区防风固沙功能变化评估
其他题名	Dynamic Changes of the Sand-fixing Service in the Sandstorm Source Control Region of Xilin Gol League
	张彪; 王爽
来源期刊	生态与农村环境学报
ISSN	1673-4831
出版年	2020
卷号	36 期号:3
中文摘要	监测评估生态工程区的生态功能变化是实施推进生态治理修复工程的重要参考。基于修正风蚀方程(RWEQ)与GIS技术,评估分析了风沙源治理工程区内锡林郭勒盟的防风固沙功能动态变化,并重点探讨了降水量和植被覆盖度对防风固沙功能的影响。结果表明:2000-2015年锡林郭勒盟年均防风固沙量为14. 56亿t,单位面积防风固沙约为74.78 t·hm~(-2),且分别以7.1%和6.3%的年均速率波动增加。整体来看,锡林郭勒盟防风固沙功能由东南向西北及东北方向递减,主要原因是东北部潜在风蚀风险较低。相比2000年,2015年锡林郭勒盟有32.63%的地区防风固沙能力升高,51.82%的地区稳定,另有15.55%的地区防风固沙能力下降。此外,锡林郭勒盟防风固沙功能变化与降水量和植被覆盖度变化均呈显著相关。因此,风沙源治理工程区防风固沙功能的提升应综合考虑气候变化、生态工程和人类活动的影响。
英文摘要	Resulting from natural processes or induced by human activities,desertification is an important global ecological and environmental challenge. China has recently initiated a series of ecological restoration programs at national and regional scales. However,regular monitoring and assessment of related ecosystem services in the ecological engineering areas can also provide fundamental references for the implementations of desertification control measures. This study estimated the dynamic changes of sand-fixing service in Xilin Gol League,which is located in Inner Mongolia Autonomous Region,in the north-western part of an extensive sandstorm source control project region,and represents 44% of the total project area. The RWEQ model was applied,and the influences of rainfall and vegetation coverage on sand-fixing capacity were analyzed. The results indicate that the average annual amount of sand-fixing service reached 1.456 billion tons of sand during the period of 2000-2015,with an average sand-fixing capacity of 74.78 t·hm~(-2). These values annually increased by 7.1% and 6.3%,respectively. In addition,the sand-fixing service in Xilin Gol League showed a gradually decreasing trend from southeast to northwest and northeast,mainly due to the lower wind erosion risk in the northeastern part. Compared with 2000,approximately 32.63% of the Xilin Gol League area presented an improvement in the sand-fixing service in 2015,also,the degradation area and unchanged area of sand-fixing service occupied 15.55% and 51.82%,respectively. Furthermore,the change of sand-fixing service significantly correlated with vegetation coverage and rainfall in Xilin Gol League. The results reveal that the integrated influences of climate change,ecological engineering and human activities on sand-fixing service should receive more attention,and additional effective control measures on wind erosion in the weak improvement regions should be adopted.
中文关键词	防风固沙 ; 风蚀 ; 时空变化 ; 植被覆盖度 ; 降水量 ; 锡林郭勒盟
英文关键词	sand-fixing wind erosion spatial-temporal change vegetation coverage rainfall Xilin Gol League
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:6687281
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353808
作者单位	张彪, 中国科学院地理科学与资源研究所;;中国科学院大学资源与环境学院, ;;, ;;, 北京;;北京 100101;;100049, 中国. 王爽, 中国科学院地理科学与资源研究所;;中国科学院大学资源与环境学院, ;;, ;;, 北京;;北京 100101;;100049, 中国.
推荐引用方式 GB/T 7714	张彪,王爽. 锡林郭勒盟风沙源治理区防风固沙功能变化评估[J],2020,36(3).
APA	张彪,&王爽.(2020).锡林郭勒盟风沙源治理区防风固沙功能变化评估.生态与农村环境学报,36(3).
MLA	张彪,et al."锡林郭勒盟风沙源治理区防风固沙功能变化评估".生态与农村环境学报 36.3(2020).