摘要
在RS和GIS技术的支持下,以艾比湖流域典型区域1990、1998、2011、2013年的四期Landsat影像为数据源,利用ENVI4.8得到艾比湖流域典型区域4个时期的土地利用/覆盖类型转移矩阵,并对土地利用面积变化量进行分析,利用土地资源数量变化指数单一土地利用类型动态度和区域土地利用综合动态度模型对土地利用问题进行信息的提取,借助景观生态学软件Fragstats3.3进行景观指数的计算,深入探讨了近20年来艾比湖流域典型区域景观格局的时空动态变化。从景观和斑块尺度上分析了1990~2013年艾比湖流域典型区域景观格局变化的整体特征和空间异质性。结果表明:从1990~2013年耕地面积不断增加且幅度最大,增加134354.07hm^2,其他地类的面积有所减少;各地类景观斑块数持续增加,斑块形状趋于不规则化,整体景观趋于破碎化;景观香农多样性指数在2011年出现最高值1.5173,景观丰富度在这一年最明显。该研究对艾比湖流域土地利用动态及环境演变等研究有着非常重要的意义。
Based on the RS and GIS technology, and taking the Landsat TM of typical region of Ebinur lake in 1990, 1998, 2011 and 2013 as the main data source, the transition matrix of land use/cover type was obtained, the transfer matrix of land use/cover type map superposition on typical region of Ebinur Lake in the four periods was obtained using ENVI4.8 software, and the land - use changes in the area were analyzed ; the number of land resources, land - use change index single dynamic degree and type of land use dynamic degree model of integrated land use information were extracted, and the landscape indices were calculated by using Fragstats3.3 to discuss the landscape pattern dynamic changes in Ebinur lake typical region and the driving forces affecting the pattern of dynamic change in recent 20a. The overall features of the landscape pattern variations and spatial heterogeneity of Ebinur lake typical region from 1990 to 2013 were analyzed at the patch and landscape scale. The resuits showed that from 1990 to 2013, arable land increased sharply by 134354.07hm^2, other land type area decreased. From 1990 to 2013 the number of landscape patches continued to grow, patch shape tended to be irregular, the overall landscape tended to fragmentation. From 1990 to 2013 the landscape Shannon diversity index showed the highest value up to 1. 5173 in 2011, landscape richness was the most obvious in same year. This study has a very important significance for Ebinur lake watershed land use dynamics and environmental evolution research.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2016年第7期53-58,共6页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金项目(41361045
41130531)
自治区青年科技创新人才培养工程项目(青年博士科技人才培养项目)(2013731002)
新疆绿洲生态(教育部省部共建)重点实验室开放课题(XJDX0201-2012-01)资助
关键词
景观格局
艾比湖
遥感
landscape pattern
Ebinur lake
remote sensing
