干旱区生态环境知识资源中心(Arid): 渭干河-库车河绿洲景观生态安全时空分异及格局优化

Arid

	渭干河-库车河绿洲景观生态安全时空分异及格局优化
其他题名	Spatial-temporal differentiation and pattern optimization of landscape ecological security in the Ugan-Kuqa river oasis
	何珍珍 1; 王宏卫 1; 杨胜天 2; 方斌 3; 张兆勇 4; 刘香云 1
来源期刊	生态学报
ISSN	1000-0933
出版年	2019
卷号	39 期号:15 页码:5473-5482
中文摘要	渭干河-库车河绿洲(以下简称渭-库绿洲)是我国西北干旱区典型的荒漠绿洲区,维护其生态安全,是实现绿洲可持续发展的重要保障。以1997年、2006年及2016年3期Landsat TM影像数据为主要数据来源,构建渭-库绿洲景观生态安全评价模型,对近20年来研究区的景观生态安全时空特征进行分析。利用最小阻力模型,以水域、林草地为生态源地,将生态安全水平、海拔和坡度作为阻力因子生成最小累计阻力面,划分生态功能区,识别生态廊道和生态节点,从点、线、面综合视角进行景观格局优化。结果表明:(1) 1997-2016年渭-库绿洲生态安全区域面积呈波动变化,相对安全区域面积在不断增加,临界安全、敏感和风险区域面积呈减小趋势,景观生态安全度在空间分布上由高到低呈内向外扩展的态势。(2)研究区景观生态安全的Moran’s I值分别为0.6479、0.7049、0.6587,景观生态安全值的空间集聚性呈先增加后降低的趋势;局部空间自相关主要以高-高聚集和低-低聚集类型为主,呈现出同质聚集、异质分离的特点。(3)景观格局优化中选取的生态源地占绿洲总面积的12.76%,构建的绿洲生态廊道基本贯穿整个研究区,关键廊道连接了绝大多数的绿洲生态源地,辅助廊道是连接没有与关键廊道连接的源地之间的通道,识别的生态节点主要分布在绿洲生态廊道的薄弱环节处,共计36个。将划分的生态缓冲区、生态连通区、生态过渡区、生态边缘区5个功能区和生态源地、生态廊道及生态节点景观组分相结合,并提出优化建议,以期为维持及进一步改善该绿洲生态环境提供科学依据。
英文摘要	The Ugan-Kuqa river oasis,a typical desert oasis area in the northwest arid area,is a vital guarantee for sustainable development of the oasis.In this study,three phases of Landsat TM images obtained in 1997,2006,and 2016 were used as the main data sources to construct an ecological security evaluation model for the Ugan-Kuqa river oasis landscape,and spatial and temporal differentiation of the landscape ecological security in the last 20 years was analyzed.The minimum resistance model was used,with water and forest-grassland as the ecological sources of the oasis.The resistance surface was generated with resistance factors,such as levels of ecological safety,altitude,and slope;the ecological function area was divided;and the ecological corridor and node were identified,which promised that the landscape pattern was optimized from the point,line,and surface.The results were as follows:(1) From 1997 to 2016,the ecological security area of the Ugan-Kuqa river oasis fluctuated as the relative security area increased and the area of critical security,sensitivity,and risk area decreased.The ecological security degree of the Ugan-Kuqa river oasis tended to expand outwards from high to low.(2) Moran’s I values for landscape ecological security in the study area were 0.6479,0.7049,and 0.6587.The spatial clustering of landscape ecological security values first increased and then decreased.Local spatial auto-correlations were mainly high-high and low-low aggregations,presenting the characteristics of homogeneous aggregation and heterogeneous separation".(3) The ecological source area of the Ugan-Kuqa river oasis accounted for 12.76% of the total area,and the ecological corridor network of the oasis ran through the whole research area.The key corridor connected most of the ecological sources of the oasis,whereas the auxiliary corridors were linked to the rest ecological sources.A total of 36 recognized ecological nodes,which were mainly distributed in the weak link of the oasis ecological corridors.The ecological safety network combined the ecological buffer zone,the ecological connectivity zone,the ecological transition zone,the ecological margin zone,the five functional zones,the ecological source zone,the ecological corridor and the ecological node landscape components.According to the ecological safety network,the optimization proposal was proposed to provide a scientific basis for maintaining and further improving the ecological environment of the oasis.
中文关键词	渭-库绿洲 ; 景观生态安全 ; 时空分异 ; 最小阻力模型 ; 格局优化
英文关键词	Ugan-Kuqa river oasis landscape ecological security spatial and temporal differentiation minimum resistance model pattern optimization
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6557171
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239463
作者单位	1.新疆大学资源与环境科学学院;;绿洲生态教育部重点实验室, ;;绿洲生态教育部重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046; 2.新疆大学资源与环境科学学院;;北京师范大学水科学研究院, ;;环境遥感与数字城市北京市重点实验室, 乌鲁木齐;;, ;;北京 830046;;100875; 3.南京师范大学新型城镇化与土地问题研究中心, 南京, 江苏 210023, 中国; 4.新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	何珍珍,王宏卫,杨胜天,等. 渭干河-库车河绿洲景观生态安全时空分异及格局优化[J]. 新疆大学,2019,39(15):5473-5482.
APA	何珍珍,王宏卫,杨胜天,方斌,张兆勇,&刘香云.(2019).渭干河-库车河绿洲景观生态安全时空分异及格局优化.生态学报,39(15),5473-5482.
MLA	何珍珍,et al."渭干河-库车河绿洲景观生态安全时空分异及格局优化".生态学报 39.15(2019):5473-5482.