Landscape Pattern Dynamic Changes in the Core Area of Ejina Oasis after Heihe Water Allocation
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 reduced significantly, and landscape fragmentation which apparently relied on water resources was effectively mitigated and controlled.Arable land, towns, roads and other constructions in this area were increasing, 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 stability 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.
Ejina oasisHeihe water allocationlandscapelandscape fragmentationdynamic change
NETL
NSTL
万方数据
维普
