本文關(guān)鍵詞： 火災(zāi)風(fēng)險(xiǎn) GWLR 火險(xiǎn)因子 火險(xiǎn)區(qū)劃 甘肅省　出處：《遙感技術(shù)與應(yīng)用》2017年03期 　論文類(lèi)型：期刊論文

【摘要】：利用甘肅省2000~2014年MCD45A1數(shù)據(jù)產(chǎn)品,建立了火災(zāi)風(fēng)險(xiǎn)評(píng)估的GWLR和BLR模型,從省域和較長(zhǎng)時(shí)間尺度上進(jìn)行火險(xiǎn)風(fēng)險(xiǎn)的模擬,并進(jìn)行火險(xiǎn)區(qū)劃。研究表明:GWLR比BLR模型的AICc值更小,可靠性、區(qū)分性更強(qiáng),更適于火災(zāi)建模。甘肅省內(nèi)火點(diǎn)多集中于坡度低于25°,海拔介于1 000~3 000m,坡向介于0°~90°,年均溫3℃~11℃,降水量200~400mm,距離公路更近的區(qū)域,以及NDVI0.6或NDVI0.3,0.2GVMI0.4的區(qū)域。將甘肅省劃分為極高火險(xiǎn)區(qū)、高火險(xiǎn)區(qū)、中火險(xiǎn)區(qū)、低火險(xiǎn)區(qū)4類(lèi)火險(xiǎn)區(qū)。氣溫、地表溫度、NDVI、距離和高程對(duì)于甘肅省火災(zāi)的發(fā)生具有空間上的影響。通過(guò)運(yùn)算形成火災(zāi)影響因素空間分布圖,可為防火措施的科學(xué)實(shí)施提供參考。
[Abstract]:Based on the MCD45A1 data products from 2000 to 2014 in Gansu Province, the GWLR and BLR models of fire risk assessment were established, and the fire risk was simulated on a provincial scale and a long time scale. The study shows that the AICc value of the BLR model is smaller than that of the BLR model, and it is more reliable and distinguishable, so it is more suitable for fire modeling. Most of the fire points in Gansu Province focus on the slope below 25 擄. The altitude is between 1 000 ~ 3 000 m, the slope direction is between 0 擄and 90 擄, the annual mean temperature is 3 鈩，

本文編號(hào)：1459038