摘要
应用遥感和地理信息系统等技术手段,基于额尔齐斯河流域1990年、2000年、2010年的LandsatTM影像和2005年、2008年的CBERS-02影像,结合多层环境要素数据库、野外定点调查数据等,通过人机交互式解译构建了上述5年额尔齐斯河流域湿地空间数据库。分析了湿地空间数据,总结出额尔齐斯河流域1990—2010年的湿地变化特征。结果表明:天然湿地面积呈波动变化,总体上2010年天然湿地面积大于1990年的面积,增加面积主要来源于湖泊和沼泽及沼泽化草地,而河谷林及滩地的面积呈逐年减小的趋势;人工湿地面积增加较显著,主要因为水浇地面积大幅增加,而水库、坑塘面积呈波动变化,总体上也呈增加趋势。
By means of the techniques of remote sensing and geographic information system,a spatial database for the wetland in Irtysh River Basin for the years of 1990,2000,2005,2008 and 2010 is developed through the man-machine interactive interpretation approach based on its Landsat TM images of 1990,2000 and 2010,CBERS-02 images of 2005 and 2008,database of environmental factors and field investigation data.The spatial database is analyzed.The variation characteristics of the wetland in Irtysh River Basin during the period from 1990 to 2010 are summarized.The results show that the area of the natural wetland has a fluctuating variation.Generally,the area of the natural wetland in 2010 is larger than that in 1990.The incremental area mainly comes from lakes,swamps and swamped grasslands,but the area of the valley forests and beaches has a gradual decreasing trend.The area of the artificial wetland has an obvious increase owing to the dramatic increase of the irrigated area,while the area of reservoirs and ponds has a fluctuating change and also has an increasing tendency.
出处
《水利水电科技进展》
CSCD
北大核心
2012年第1期22-26,共5页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金地区科学基金(40961012/D0103)
新疆维吾尔自治区青年自然科学基金(2010211B11)
关键词
湿地
时空变化
遥感监测
额尔齐斯河流域
wetland
temporal and spatial variation
remote sensing monitoring
Irtysh River Basin