国土资源遥感
國土資源遙感
국토자원요감
REMOTE SENSING FOR LAND & RESOURCES
2009年
4期
57-61,67
,共6页
遥感监测%空间分析%水土流失%黄河流域
遙感鑑測%空間分析%水土流失%黃河流域
요감감측%공간분석%수토류실%황하류역
Remote sensing mornitoring%Space analysis%Land erosion%Yellow river drainage area
以MSS、TM、ETM及CBERS遥感数据为主要信息源,辅以DEM、土地利用现状图及地质图等专题数据,通过信息自动提取的方法,结合人机交互解译和野外检查验证,编制各期水土流失现状图,再利用GIS空间分析得到不同时段水土流失变化图.监测结果表明,黄河流域水土流失面积达484 737.20 km~2,占整个流域的61.04%.水土流失强度变化特征是1975～2000年加重区大于减轻区,2000～2007年减轻区大于加重区.
以MSS、TM、ETM及CBERS遙感數據為主要信息源,輔以DEM、土地利用現狀圖及地質圖等專題數據,通過信息自動提取的方法,結閤人機交互解譯和野外檢查驗證,編製各期水土流失現狀圖,再利用GIS空間分析得到不同時段水土流失變化圖.鑑測結果錶明,黃河流域水土流失麵積達484 737.20 km~2,佔整箇流域的61.04%.水土流失彊度變化特徵是1975～2000年加重區大于減輕區,2000～2007年減輕區大于加重區.
이MSS、TM、ETM급CBERS요감수거위주요신식원,보이DEM、토지이용현상도급지질도등전제수거,통과신식자동제취적방법,결합인궤교호해역화야외검사험증,편제각기수토류실현상도,재이용GIS공간분석득도불동시단수토류실변화도.감측결과표명,황하류역수토류실면적체484 737.20 km~2,점정개류역적61.04%.수토류실강도변화특정시1975～2000년가중구대우감경구,2000～2007년감경구대우가중구.
Data sources include mainly MSS,TM, ETM and CBERS,together with DEM,China's geological map,terrain map and land use map. Through automatic information extraction,naked-eye and computer aided interpretation and field work,the authors compiled the land erosion map of four stages. Erosion change information was extracted by using the technique of GIS space analysis. The statistic results show that the area of land erosion in the Yellow River Drainage Area has reached 60% of the whole area. From 1975 to 2000, the aggravated area was larger than the alleviated area;from 2000 to 2007,the alleviated area was larger than the aggravated area.
