干旱区生态环境知识资源中心(Arid): 新疆玛纳斯河流域绿洲景观生态脆弱性时空分异

Arid

	新疆玛纳斯河流域绿洲景观生态脆弱性时空分异
其他题名	Spatiotemporal Variation of Landscape Ecological Vulnerability in Oasis in the Manas River Basin,Xinjiang
	梁二敏; 张军民; 杨卫红
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2017
卷号	34 期号:4 页码:950-957
中文摘要	以2000年、2005年和2014年3期Landsat TM影像为基础数据,运用景观敏感度和景观适应度指数构建景观生态脆弱度评价模型,采用空间分析方法和统计学方法研究其时空分异特征以及空间关联格局,结果表明: ① 20002014年,耕地、建设用地和未利用地增加、林地减少较快,水域和草地缓慢减少,流域景观生态脆弱性呈上升趋势。其中, 2005年以后脆弱性上升明显,结构性因素对景观格局变化的影响逐渐增大,但非结构性因素始终居于主要地位。②流域景观生态脆弱性具有高度的空间自相关性,表现为明显的空间关联性和空间依赖性,呈高-高集聚和低-低集聚、趋同空间正相关格局。③脆弱性空间分异较为显著。2000年以较低和中等脆弱区为主,两者所占面积比例为57.36%,较高和高脆弱区分布在西北部; 2005年大部分地区处于较低和中等脆弱区,流域中下游较高脆弱区向东部延伸; 2014年脆弱度水平明显增大,高脆弱区所占面积比例为10.9%,较高和高脆弱区向中游以及中上游扩张,城市空间扩张和建设用地扩大是导致脆弱度增大的主要动因。④中上游脆弱性空间扩张强度、方向、趋势与中下游脆弱性变化密切相关,说明人工绿洲建设进入高强度集聚规模和大规模生态外部性的空间发展阶段,应加强全流域统筹、全要素规划、全过程管理的生态建设与重构。
英文摘要	Based on the Landsat TM (Thematic Mapper) image data in 2000,2005 and 2014,in this study an evaluation model of assessing the landscape ecological vulnerability was constructed using the landscape sensitivity index and landscape adaptability index,and the purpose was to explore the variation of landscape vulnerability by using geo-statistical and spatial analysis methods. The results showed that: ① During the study period,the areas of cultivated land,construction land and unused land were enlarged,the area of woodland was reduced quickly,and the areas of waters and grassland were reduced slowly. The landscape ecological vulnerability in the drainage basin was in an increase trend,especially after 2005,the effects of structural factors on the landscape patterns was gradually increased,but the effects of non-structural factors played a major role all along; ② There was as high spatial autocorrelation of landscape ecological vulnerability,which revealed the obvious spatial correlation and spatial dependence, and a spatial pattern of high-high concentration and low-low concentration formed; ③The spatial differentiation of landscape vulnerability was significant. In 2000,the area with low and moderate landscape ecological vulnerability was dominant (57.36%); in 2005,the low and moderate landscape ecological vulnerability was dominant in most of the area; in 2014,the vulnerability level was increased significantly,the proportion of areas with high vulnerability was 10.9%,the areas with high and extremely high vulnerability were expanded towards the middle and upper reaches,and such situation was manly caused by urban expansion and construction land enlargement; ④ The intensity,direction and trend of space expansion of landscape ecological vulnerability in the upper reaches were closely related to the change of vulnerability in the middle and lower reaches,which showed that the construction of artificial oasis was stepped into the development stage with high agglomeration and large-scale ecological externality.
中文关键词	绿洲 ; 景观生态 ; 脆弱性 ; 时空分异 ; 玛纳斯河流域
英文关键词	oasis landscape ecology vulnerability spatiotemporal variation Manas River Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6043703
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236009
作者单位	石河子大学理学院, 石河子, 新疆 832003, 中国
推荐引用方式 GB/T 7714	梁二敏,张军民,杨卫红. 新疆玛纳斯河流域绿洲景观生态脆弱性时空分异[J]. 石河子大学,2017,34(4):950-957.
APA	梁二敏,张军民,&杨卫红.(2017).新疆玛纳斯河流域绿洲景观生态脆弱性时空分异.干旱区研究,34(4),950-957.
MLA	梁二敏,et al."新疆玛纳斯河流域绿洲景观生态脆弱性时空分异".干旱区研究 34.4(2017):950-957.