陕西千渭之会国家湿地公园土地利用变化及其评价

Qianweizhihui National Wetland:its Land Use Change and Evaluation

利用卫星影像图、造林设计图和实地调查数据,转移概率矩阵、生态系统服务价值系数等参数,研究了2011-2014年陕西千渭之会国家湿地公园土地利用及其生态服务功能价值变化情况,结果为耕地主要转化为林地,转移概率达87.47%;39.82%的草地和21.20%的建设用地转化为水域;未利用地的转化率也比较高,分别有11.35%、24.39%、43.05%、16.46%的未利用地转化为林地、草地、水域和建设用地;水域面积占总面积的60%左右,对维持湿地生态系统的稳定起着重要的作用;湿地公园生态系统服务价值从2011年的2262.97万元增加到2014年的2710.70万元,净增447.73万元。

Since construction of Qianweizhihui Wetland Park,land use has changed greatly by a series of ecological construction.Cultivated land mainly converted into woodland,which transition probability is 87.47%.39.82%of grass and 21.20%of construction land have been transferred into water area.Unused land has a high conversion rate,of which,11.35%,24.39%,43.05%,16.46% converted into forest land,grassland,water area and construction land,respectively.Water area accounts for60% of the total area,maintaining the stability of the wetland ecosystem.Ecosystem services value increased by 4.4773 million yuan,from 22.6297 million yuan to 22.6297 million yuan.