摘要
基于额济纳绿洲2000、2007、2014年TM遥感影像,利用Arc GIS 10.2与FRAGSTATS 4.2等软件对影像进行解译及分析,对黑河配水后额济纳绿洲核心区景观格局变化进行分析。结果显示:15年间额济纳绿洲景观格局变化明显,黑河配水实施后增加了东居延海湿地水域景观,土地利用丰富度增加;景观斑块数量大幅度减少,植被、水域面积不断增加,荒漠景观类型的面积有所减少,景观破碎化得到有效缓解与控制,对水资源具有明显的依赖性;该区耕地、城镇、道路等建设不断增加,对绿洲的保护与维持产生了新的威胁,景观破碎化现象依然严重。建议长期持续地实施配水方案,并控制人口增加,科学规划城镇化建设及农牧活动,以维持绿洲生态系统的稳定。
Based on the TM remote sensing images of Ejina oasis in 2000, 2007 and 2014, and using ArcGIS 10. 2, FRAGSTATS 4.2 and other software, the images and the landscape pattern changes in the core area of Ejin Oasis after Heihe water allocation were interpreted and analyzed. The results showed that： within 15 years, the landscape pattern of Ejina Oasis has changed significantly. After Heihe water allocation, East Juyanhai wetland water landscape was made, land use abundance and water area were increased. Meanwhile, the area of desert landscape was decreased; the number of landscape patches re- duced significantly, and landscape fragmentation which apparently relied on water resources was effective- ly mitigated and controlled. Arable land, towns, roads and other constructions in this area were increas- ing, which made new threats to the protection and maintenance of the oasis. Landscape fragmentation phenomenon was still serious. According to the analysis of the results and in order to maintain the stabili- ty of the oasis ecosystem, it was recommended to implement long - term and sustained water distribution program, control population growth, conduct scientific planning of urbanization construction and farming activities.
出处
《林业调查规划》
2015年第5期36-41,共6页
Forest Inventory and Planning
基金
林业公益性行业科研专项(201404304-6)
国家自然科学基金项目(31057533)资助
关键词
额济纳绿洲
黑河配水
景观格局
景观破碎化
动态变化
Ejina oasis
Heihe water allocation
landscape
landscape fragmentation
dynamic change
