干旱区生态环境知识资源中心(Arid): 乡镇尺度金塔绿洲时空格局变化

Arid

	乡镇尺度金塔绿洲时空格局变化
其他题名	Spatio-temporal change on township scale of Jinta oasis in the latest 20 years
	巩杰 1; 谢余初 1; 孙朋 1; 颉耀文 2
来源期刊	生态学报
ISSN	1000-0933
出版年	2013
卷号	33 期号:11 页码:3470-3479
中文摘要	基于遥感、GIS技术和1990、1999、2006和2009年4期Landsat TM/ETM+遥感影像等,利用绿洲变化幅度、动态度模型、绿洲变化趋势指数模型及绿洲化荒漠化转移矩阵,开展乡镇尺度上金塔绿洲时空变化及分异研究。结果表明:19902009年间,金塔绿洲不断扩张,荒漠面积呈现减少趋势,绿洲净增长面积达199.49 km~2。金塔绿洲整体处于非平衡状态,不同乡镇绿洲变化程度不同,乡镇绿洲规模变化强弱顺序为羊井子湾乡>场站机关辖区>东坝镇>三合乡>古城乡>金塔镇>中东镇>大庄子乡>西坝乡。金塔绿洲聚集度增加,景观破碎化程度减少,荒漠基质优势度降低。绿洲扩张区主要有羊井子湾乡、场站机关管辖区、东坝镇、金塔镇、古城乡和三合乡等。近20年来,金塔绿洲变化主要受人文与社会因素的影响,水资源的开发利用是绿洲扩张的前提条件,人口(含移民迁入)、经济发展、政策和科技进步是主要的驱动因素。
英文摘要	Based on Landsat TM/ETM+ images in 1990,1999,2006 and 2009 of Jinta and RS and GIS technique,oasis change models(change trend,dynamic model,change trend indexes,oasis-desert transition matrix) were used to analyze the spatio-temporal change of Jinta oasis in the latest 20 years. The results showed that: (1) the area of oasis increased continuously and desert decreased correspondingly,and the oasis area increased by 199. 49 km~2 from 1990 to 2009. (2) Jinta oasis was in an unbalanced status,and the area extent degrees of different oasis were different in the latest 20 years. The extent of oasis area of different township were ranked as Yangjingziwan town>Precinct of Jinta county>Dongba town> Sanhe town > Gucheng town > Jinta town > Zhongdong town >Dazhuangzi town >Xiba town. (3) The whole landscape fragmentation of Jinta oasis was decreased,the contagion was increased,and the matrix component was reduced. The oasis which expanded apparently were mainly located in Yangjingziwan town,Precinct of Jinta county,Dongba town,Jinta town, Gucheng town,and Sanhe town. (4) The human-dimensional factors were the major cause of the spatio-temporal change of Jinta oasis in the latest 20 years. Water resources development and utilization was the prerequisite of oasis expansion,and oasis change were co-effected by human activities,immigrate,economic development and regional policy and scientific and technological advance.
中文关键词	金塔绿洲 ; 时空格局 ; 动态变化 ; 乡镇尺度 ; 人类活动
英文关键词	Jinta oasis spatio-temporal Change township scale human activities
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4851938
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230000
作者单位	1.兰州大学, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国; 2.兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	巩杰,谢余初,孙朋,等. 乡镇尺度金塔绿洲时空格局变化[J]. 兰州大学,2013,33(11):3470-3479.
APA	巩杰,谢余初,孙朋,&颉耀文.(2013).乡镇尺度金塔绿洲时空格局变化.生态学报,33(11),3470-3479.
MLA	巩杰,et al."乡镇尺度金塔绿洲时空格局变化".生态学报 33.11(2013):3470-3479.