干旱区生态环境知识资源中心(Arid): 陕甘宁青草地变化的遥感动态分析

Arid

	陕甘宁青草地变化的遥感动态分析
其他题名	Remote Sensing Dynamic Analysis on Grassland Changes in Shaanxi, Gansu, Ningxia and Qinghai
	颜长珍 1; 吴炳方 1; 王一谋 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2005
卷号	19 期号:4 页码:23-28
中文摘要	以陕甘宁青二十世纪八十年代中期和2000年的TM影像为信息源,运用遥感技术与地理信息系统技术结合建立了两期全区土地资源数据库,通过对从中提取的草地专题时空数据的分析得出: 2000年全区有草地面积61694471hm2,占总面积的44.75%;14年间全区新增草地279028hm2,同期减少草地534071hm2,增减抵消草地净减少255043hm2,占草地面积的0.41%.全区草地减少的主要原因是草地被开垦为耕地,其次是为恢复植被而将部分草地植树变为林地以及草地沙漠化变为沙地和草地变为水域;而草地增加的主要来源是沙地变为草地,其次是林地变为草地以及耕地和水域变为草地.
英文摘要	With the assistance of remote sensing and geographical information systems, the land resource databases in the middle of 1980’s and 2000 have been established by interpreting the Landsat TM images of two times, and the extend of the databases includes all territory of Shaanxi, Gansu, Ningxia and Qinghai locating in the north China. According to the spatial - temporal information of grassland derived from the land resource databases, the following points can be concluded: in the whole region, there was 61694471hm2 of grassland in 2000 , occupying 44. 75% of the territory area. During about 14 years between 1986 and 2000, 279028hm2 of new grassland had been transformed from other types of land cover, and 534O71hm2 of grassland disappeared by contraries. As the result of grassland changes, there had been 255043hm2 by 0. 41% of net decrease of grassland. In the whole region, the decreased grassland was mainly reclaimed into farmland, and secondly turned into forestry land by afforestation, sandy land by desertification and water area; the increased grassland was chiefly come from the rehabilitation of sandy land, and remnant grassland was transformed from forestry land, farmland and water area.
中文关键词	陕甘宁青 ; 草地 ; 遥感 ; 动态分析
英文关键词	Shaanxi, Gansu, Ningxia and Qinghai grassland changes remote sensing, dynamic analysis
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:1998597
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206307
作者单位	1.中国科学院遥感应用研究所, 北京 100101, 中国; 2.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	颜长珍,吴炳方,王一谋. 陕甘宁青草地变化的遥感动态分析[J]. 中国科学院西北生态环境资源研究院,2005,19(4):23-28.
APA	颜长珍,吴炳方,&王一谋.(2005).陕甘宁青草地变化的遥感动态分析.干旱区资源与环境,19(4),23-28.
MLA	颜长珍,et al."陕甘宁青草地变化的遥感动态分析".干旱区资源与环境 19.4(2005):23-28.