干旱区生态环境知识资源中心(Arid): 生态脆弱区土地利用格局变化及其环境效应以宁夏回族自治区中部干旱带为例

Arid

	生态脆弱区土地利用格局变化及其环境效应以宁夏回族自治区中部干旱带为例
其他题名	Landuse Change and Its Environmental Effect in Ecologically Vulnerable AreaA Case Study in Arid Area of Central Ningxia Hui Autonomous Region
	贾科利; 姚玉玲; 郭占军; 叶蔚
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2011
卷号	31 期号:6 页码:218-222,228
中文摘要	基于遥感、GIS技术、景观生态学及层次分析方法，以宁夏回族自治区中部干旱带为研究区，利用1978年MSS以及1987，1996，2007年的TM/ETM遥感影像为数据源，对该区域近30a来土地利用格局变化及环境效应进行了分析。结果表明，30a来该区耕地和建设用地有不同程度的增加，新增耕地主要来自未利用土地和草地，建设用地面积的增加主要来源于耕地和未利用土地；耕地和未利用土地向林地、草地转化是林地和草地面积增加的主要来源。由于受人类活动的干扰，研究区土地利用景观结构发生了较大变化，土地利用格局变化产生了景观破碎化，景观异质性增加，生态环境退化等生态效应。但20世纪90年代中后期以来，在以还林还草、禁牧及水利等综合治理工程为核心的生态环境治理措施调控下，土地利用结构得以调整，植被覆盖增加，区域生态环境质量逐步得以改善。
英文摘要	Using the methods of remote sensing, geographical information system(GIS), landscape ecology and analytic hierarchy process(AHP), this paper analyzed the change of landuse pattern and its ecological and environmental effects in arid area of central Ningxia Hui Autonomous Region from 1978 to 2007 based on the MSS image in 1978 and Landsat TM/ETM images in 1987, 1996, 2007.The results showed that areas of farmland and construction areas increased in the past 30 years.The newly-increased farmlands mainly came from unused land and grassland, while the newly-increased lands for construction mainly came from farmland and unused lands.At the same time, the forest land and grassland decreased from 1978 to 1987, and increased from since 1987.The sources of increased area were primary farmland and unused land.These changes caused great changes in landscape such as landscape fragmenting and heterogeneity and declining of environmental quality from 1978 to 1987.The index of environmental effect was only 0.118 in 1987.After that, with implementation of the regulating and controlling measures, prohibiting graze policy and hydraulic engineering, more farmland and unused land have been converted to trees and grasses, the vegetation cover increased, and the landuse structure was adjusted.This led to the gradual improvement of environmental quality since the middle and late 1990s by environmetal strategies.
中文关键词	生态脆弱区 ; 土地利用变化 ; 环境效应 ; 宁夏回族自治区中部 ; 干旱带
英文关键词	ecologically vulnerable area landuse change environmental effect arid area central Ningxia Hui Autonomous Region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ECONOMICS POLICY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4409148
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227072
作者单位	宁夏大学资源环境学院, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	贾科利,姚玉玲,郭占军,等. 生态脆弱区土地利用格局变化及其环境效应以宁夏回族自治区中部干旱带为例[J]. 宁夏大学,2011,31(6):218-222,228.
APA	贾科利,姚玉玲,郭占军,&叶蔚.(2011).生态脆弱区土地利用格局变化及其环境效应以宁夏回族自治区中部干旱带为例.水土保持通报,31(6),218-222,228.
MLA	贾科利,et al."生态脆弱区土地利用格局变化及其环境效应以宁夏回族自治区中部干旱带为例".水土保持通报 31.6(2011):218-222,228.