本文選題：土壤侵蝕 + 遙感監(jiān)測(cè)�。� 參考：《水土保持研究》2016年03期

【摘要】：為了有效保護(hù)撫仙湖流域生態(tài)環(huán)境安全,推進(jìn)其可持續(xù)發(fā)展,對(duì)撫仙湖流域土壤侵蝕情況進(jìn)行遙感監(jiān)測(cè)研究。采用"3S"技術(shù)與野外實(shí)地調(diào)查相結(jié)合的方法,以云南省第一次全國(guó)地理國(guó)情普查成果為基礎(chǔ),基于通用水土流失方程(USLE)模型,估算撫仙湖流域1974—2014年的水土流失量,并探討流域土壤侵蝕強(qiáng)度的時(shí)空分布及變化規(guī)律。研究發(fā)現(xiàn):(1)撫仙湖流域土壤侵蝕強(qiáng)度在很大程度上受降雨量的影響;(2)土壤侵蝕量總體呈現(xiàn)出波動(dòng)上升下降再上升的趨勢(shì)。不同強(qiáng)度土壤侵蝕量的變化表明其水土流失經(jīng)歷了先加劇后緩解的變化過(guò)程,流域部分敏感區(qū)土壤侵蝕程度不斷加劇;(3)流域水土流失的空間分布具有一致性,水土流失最嚴(yán)重的區(qū)域基本分布在撫仙湖的東西兩岸以及南岸的部分區(qū)域。
[Abstract]:In order to effectively protect the ecological environment security and promote the sustainable development of Fuxian Lake basin, remote sensing monitoring of soil erosion in Fuxian Lake basin was carried out. Using the method of "3s" technology combined with field investigation, based on the results of the first national survey of geographical conditions in Yunnan Province, and based on the general soil erosion equation (USLEE) model, the soil and water loss in Fuxian Lake basin from 1974 to 2014 was estimated. The temporal and spatial distribution and variation of soil erosion intensity in the watershed are also discussed. It is found that the soil erosion intensity in Fuxian Lake basin is affected by rainfall to a great extent. The change of soil erosion amount of different intensity indicates that the soil and water loss has experienced the process of first intensifying and then mitigating, and the spatial distribution of soil erosion is consistent in some sensitive areas of the basin. The most serious areas of soil and water loss are located on the east and west banks of Fuxian Lake and parts of the south bank.
【作者單位】： 云南師范大學(xué)旅游與地理科學(xué)學(xué)院;云南省基礎(chǔ)地理信息中心;
【基金】：國(guó)家測(cè)繪地理信息局地理國(guó)情監(jiān)測(cè)示范項(xiàng)目“撫仙湖流域生態(tài)環(huán)境動(dòng)態(tài)監(jiān)測(cè)”(測(cè)國(guó)土函[2014]35號(hào)) 國(guó)家自然科學(xué)基金項(xiàng)目(41561048) 云南省中青年學(xué)術(shù)技術(shù)帶頭人培養(yǎng)項(xiàng)目(2008PY056)
【分類(lèi)號(hào)】：S157.1;S127

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本文編號(hào)：2007881