干旱区生态环境知识资源中心(Arid): 陕北地区退耕前后土地利用/覆被变化及驱动力分析

Arid

	陕北地区退耕前后土地利用/覆被变化及驱动力分析
其他题名	DRIVING FORCES FOR AND CHANGES IN LAND USE/COVER IN NORTHERN SHAANXI AFTER IMPLEMENTATION OF GRAIN-FOR-GREEN PROJECT
	宋富强; 康慕谊; 段锦
来源期刊	北京师范大学学报. 自然科学版
ISSN	0476-0301
出版年	2011
卷号	47 期号:6 页码:634-639,661
中文摘要	在陕北地区19862008年土地利用/覆被数据库的基础上,分析其土地数量变化和转移矩阵,并从气候、人口和政策方面揭示土地利用/覆被变化的驱动力,得出如下结论:1)19861995年,陕北地区土地利用数量变化不大,发生土地转移的区域主要集中在陕北北部,年降水的增加趋势是导致沙地-低覆盖草地、低覆盖草地-中覆盖草地转移的主要原因,而人口快速增长则是草地-旱地转移的主要驱动因素;2)19952008年,陕北地区土地利用/覆被类型变化剧烈,有林地和中覆盖草地面积显著增加,旱地面积大幅减少.退耕还林生态补偿机制的实施,缓解了由于人均耕地面积减少而导致的人地矛盾加剧的问题,同时又通过退耕还林、退耕还草、封山育林、封禁还草等多种模式,直接导致了旱地-有林地、旱地-草地、疏林-有林地和沙地-草地的转移,与此同时,年降水的增加也有利于封山育林和封禁还草成果的巩固.退耕还林工程作为19952008年土地利用/覆被变化的主要驱动力,有效地促进了陕北地区植被的恢复.
英文摘要	Land use and cover database(1986 to 2008) in Northern Shaanxi was used to investigate changes in total land use and pattern transition.The driving forces behind such changes such as climate,population and policy were studied.It was found that total land use changed very little from 1986 to 1995,land use pattern transfer occurred mainly in the northern part of Northern Shaanxi.Increasing annual precipitation was the main force driving desert-to-low coverage grassland and low coverage grassland-to-medium coverage grassland transfers.Rapid population growth was the driving force for grassland-to-farmland transfer.Land use / cover in Northern Shaanxi changed drastically from 1995 to 2008.Forest and medium-cover-grassland increased significantly,but farmland decreased sharply.Ecological compensation mechanism of the Grain-for-Green project relieved the conflicts between people and land,which would intensify when per capita arable land area decreased.Conversion of farmland to forest or grassland,enclosure of the hills for natural forestation,grazing prohibition and other measures of the Grain-for-Green project were the immediate causes for farmland transfer to forest or grassland,woodland transfer to forest and desert transfer to grass.Increase in annual precipitation was also conducive to the Grain-for-Green project.Grain-for-Green project was the main driving force behind changes in land use and cover from 1995 to 2008 in Northern Shaanxi,which effectively promoted vegetation recovery in Northern Shaanxi.
中文关键词	陕北地区 ; 退耕还林 ; 土地利用/覆被变化 ; 驱动力
英文关键词	Northern Shaanxi grain for green project LUCC driving forces
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4409492
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/2XILL650/226162
作者单位	北京师范大学资源学院, 地表过程与资源生态国家重点实验室, 北京 100875, 中国
推荐引用方式 GB/T 7714	宋富强,康慕谊,段锦. 陕北地区退耕前后土地利用/覆被变化及驱动力分析[J]. 北京师范大学,2011,47(6):634-639,661.
APA	宋富强,康慕谊,&段锦.(2011).陕北地区退耕前后土地利用/覆被变化及驱动力分析.北京师范大学学报. 自然科学版,47(6),634-639,661.
MLA	宋富强,et al."陕北地区退耕前后土地利用/覆被变化及驱动力分析".北京师范大学学报. 自然科学版 47.6(2011):634-639,661.