摘要
采用乌梁素海地区2003—2011年的TM/ETM+遥感数据,利用比值指数和波段组合的方法提取了乌梁素海水域、水草、芦苇和农田等信息,并分析了9年间乌梁素海地区各类型面积的增减情况及其变化规律,采用数据点绝对偏差的平均值方法,概算出各类型面积的变化率,根据变化率的值估算出各类型面积变化的趋势和大小,预测乌梁素海未来各类型面积的转化情况。通过本文的对比分析研究及统计运算,预测乌梁素海地区明水面积变化率为26.56%,水草面积变化率为-20.66%,芦苇面积变化率为-1.94%,即:明水区域的面积将增加33.57 km2,而水草和芦苇的面积将分别减少21.02 km2和4.92 km2。
Based on the TM/ETM ＋ remote sensing data of Wuliangsuhai wetland in 2003--2011, the methods of ratio vegetation index and bond combination was used to obtain the information about the areas of open water, water plants, reed and farmland in Wuliangsuhai wetland and tile change of area and their patterns were analyzed. By u- sing the method of data point＇ s average absolute deviations, the change rates of above-mentioned areas were calcu- lated and the changing trend was estimated. Based on these comparison and analysis, the dynamics change of Wu- liangsuhai wetland was predicated and the results are as follows ： the change rate of open water is 26.56%, and that of water plants and reed are - 20.66% and - 1.49% respectively, i.e. the area of open water will increase by 33.57 km2 ,while the areas of water plants and reed will decrease by 21.02 km2 and 4. 92 km2 respectively in 2012.
出处
《林业科学研究》
CSCD
北大核心
2012年第6期719-725,共7页
Forest Research
基金
国家科技支撑课题--乌梁素海湿地生态系统恢复与重建关键技术研究与示范"(2011BAC02B03)"
关键词
遥感
信息提取
湿地
分类
变化监测
乌梁素海
remote sensing
information extraction
wetland
monitoring
Wuliangsuhai
