國產(chǎn)HJ-1B衛(wèi)星數(shù)據(jù)的地表溫度及濕度反演方法——以呼倫貝爾草原伊敏露天煤礦區(qū)為例
發(fā)布時間:2019-03-08 16:06
【摘要】:草原露天煤礦的土壤濕度遙感監(jiān)測可以反映露天開采活動對生態(tài)環(huán)境的擾動程度。選擇國產(chǎn)環(huán)境衛(wèi)星(HJ-1B)多光譜及熱紅外光譜數(shù)據(jù),探討HJ-1B數(shù)據(jù)在中國北部呼倫貝爾草原伊敏露天煤礦區(qū)地表溫度及濕度的反演模型及適宜性,對比分析JMS,Qin和Artis算法在研究區(qū)溫度反演中的精度及適用性;進一步利用歸一化植被指數(shù)和地表溫度(NDVI-LST)的特征空間反演溫度植被干旱指數(shù)(temperature vegetation dryness index,TVDI);通過野外實測土壤濕度數(shù)據(jù)對NDVI LST特征空間中的干邊模型進行修正。結(jié)果表明:基于Qin算法反演的溫度數(shù)據(jù)精度最高;干邊糾正系數(shù)為0.3時,TVDI與實測土壤含水量相關(guān)性最高,"濕邊"呈現(xiàn)剖物線特征,"干邊"呈現(xiàn)線性規(guī)律。反演結(jié)果能夠很好地反映露天煤礦區(qū)內(nèi)不同地物的地表干旱狀況及空間異質(zhì)性,可為草原露天煤礦區(qū)的長周期陸面演變監(jiān)測提供基礎(chǔ)數(shù)據(jù)。
[Abstract]:The monitoring of the soil moisture remote sensing of the opencast coal mine can reflect the degree of disturbance of the open-pit mining activity to the ecological environment. Based on the multi-spectral and thermal infrared data of domestic environmental satellite (HJ-1B), the inversion model and the suitability of the surface temperature and humidity of the HJ-1B data in the Yimin open-pit coal mine area in the north of China are discussed, and the JMS is compared and analyzed. The accuracy and applicability of the Qin and Artis algorithm in the temperature inversion of the study area are studied. The temperature vegetation drought index (TVDI) is further studied by using the normalized vegetation index and the surface temperature (NDVI-LST). 閫氳繃閲庡瀹炴祴鍦熷¥婀垮害鏁版嵁瀵筃DVI LST鐗瑰緛絀洪棿涓殑騫茶竟妯″瀷榪涜淇. The results show that the accuracy of the temperature data is the highest based on the Qin algorithm; when the correction coefficient of the dry edge is 0.3, the correlation between the TVDI and the measured soil moisture content is the highest, the "wet edge" presents the profile line characteristic, and the "dry edge" presents a linear rule. The inversion result can reflect the surface drought condition and spatial heterogeneity of different ground objects in the open-pit coal mine area well, and can provide the basic data for the long-period land surface evolution monitoring of the grassland open-pit coal mine area.
【作者單位】: 東北大學(xué)測繪遙感與數(shù)字礦山研究所;北京國測星繪信息技術(shù)有限公司;中南大學(xué)地球科學(xué)與信息物理學(xué)院;江蘇省地質(zhì)測繪院;
【基金】:國家自然科學(xué)基金項目“干旱半干旱草原區(qū)露天煤礦土壤光譜特征模型研究”(編號:4140010440)資助
【分類號】:S127;S152
本文編號:2436969
[Abstract]:The monitoring of the soil moisture remote sensing of the opencast coal mine can reflect the degree of disturbance of the open-pit mining activity to the ecological environment. Based on the multi-spectral and thermal infrared data of domestic environmental satellite (HJ-1B), the inversion model and the suitability of the surface temperature and humidity of the HJ-1B data in the Yimin open-pit coal mine area in the north of China are discussed, and the JMS is compared and analyzed. The accuracy and applicability of the Qin and Artis algorithm in the temperature inversion of the study area are studied. The temperature vegetation drought index (TVDI) is further studied by using the normalized vegetation index and the surface temperature (NDVI-LST). 閫氳繃閲庡瀹炴祴鍦熷¥婀垮害鏁版嵁瀵筃DVI LST鐗瑰緛絀洪棿涓殑騫茶竟妯″瀷榪涜淇. The results show that the accuracy of the temperature data is the highest based on the Qin algorithm; when the correction coefficient of the dry edge is 0.3, the correlation between the TVDI and the measured soil moisture content is the highest, the "wet edge" presents the profile line characteristic, and the "dry edge" presents a linear rule. The inversion result can reflect the surface drought condition and spatial heterogeneity of different ground objects in the open-pit coal mine area well, and can provide the basic data for the long-period land surface evolution monitoring of the grassland open-pit coal mine area.
【作者單位】: 東北大學(xué)測繪遙感與數(shù)字礦山研究所;北京國測星繪信息技術(shù)有限公司;中南大學(xué)地球科學(xué)與信息物理學(xué)院;江蘇省地質(zhì)測繪院;
【基金】:國家自然科學(xué)基金項目“干旱半干旱草原區(qū)露天煤礦土壤光譜特征模型研究”(編號:4140010440)資助
【分類號】:S127;S152
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