本文選題：表磧覆蓋冰川 + 面向?qū)ο?波段比值法�。� 參考：《山地學(xué)報(bào)》2017年02期

【摘要】：針對表磧覆蓋冰川提取困難的問題,本文結(jié)合TM影像、DEM和野外調(diào)查資料,基于地物光譜、地形和紋理特征,將研究區(qū)分為表磧覆蓋冰川區(qū)、無表磧覆蓋冰川區(qū)和陰影下冰川區(qū),采用模糊邏輯方法建立定量化提取規(guī)則,綜合利用了面向?qū)ο蠛筒ǘ伪戎祪蓚�(gè)方法的各自優(yōu)點(diǎn),建立面向?qū)ο?波段比值信息提取方法,進(jìn)行了有無表磧物覆蓋的冰川信息的分區(qū)提取,并以波密縣為典型研究區(qū),通過混淆矩陣進(jìn)行精度分析。研究結(jié)果表明:1)提出的面向?qū)ο蟆ǘ伪戎捣?能夠較完整地提取研究區(qū)表磧覆蓋冰川,精度可達(dá)93%,冰川信息提取總體精度為98%,kappa系數(shù)為0.97;2)研究區(qū)冰川總面積為7 655.27 km~2,占研究區(qū)總面積的46.18%,無表磧覆蓋冰川、表磧覆蓋冰川、陰影下冰川面積分別為5615.20 km~2、65.13 km~2、1 974.94 km~2,占總冰川73.35%、0.85%、25.80%。初步建立的表磧覆蓋冰川自動信息提取方法可以為類似地區(qū)冰川遙感監(jiān)測提供依據(jù)和參考。
[Abstract]:Aiming at the difficulty of extracting surface moraine covered glacier, this paper combines with TM image Dem and field survey data, based on the features of surface spectrum, topography and texture, divides the research into surface moraine covered glacial area, non-surface moraine covered glacial area and glacial area under shadow. Fuzzy logic method is used to establish quantitative extraction rules, and the advantages of object-oriented and band ratio methods are synthetically utilized, and the object-oriented band ratio information extraction method is established. The information of glacier covered with or without moraine was extracted from the region, and the precision of the glacier was analyzed by confusion matrix, taking Bomi County as the typical research area. The results show that the object-oriented band ratio method proposed by: 1) can completely extract the surface moraine covered glaciers in the study area. The total area of the glacier in the study area is 7 655.27 km2, accounting for 46.18% of the total area of the study area. The glacial area is covered with no surface moraine. The glacial area under the shadow is 5615.20 km / m ~ (2) 65.13 km ~ (2) ~ (1) 974.94 km ~ (2) ~ (2), accounting for 73.35 ~ 0.85 km / m of the total glacier and 25.80 km / m ~ (-1), respectively. The preliminary automatic information extraction method of moraine cover glacier can provide basis and reference for glacier remote sensing monitoring in similar areas.
【作者單位】： 湘潭大學(xué)土木工程與力學(xué)學(xué)院;湖南科技大學(xué)資源環(huán)境與安全工程學(xué)院;西藏自治區(qū)公路局;
【基金】：交通運(yùn)輸部科技計(jì)劃項(xiàng)目(20153161T906) 巖土力學(xué)與工程安全湖南省重點(diǎn)實(shí)驗(yàn)室開放基金(16GES06) 特殊環(huán)境道路工程湖南省重點(diǎn)實(shí)驗(yàn)室開放基金(kfj120404) 湖南省研究生科研創(chuàng)新基金(CX2015B471)~~
【分類號】：P237;P343.6
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本文編號：2099937