本文選題：可溶性重金屬 + 多尺度　； 參考：《環(huán)境科學(xué)學(xué)報(bào)》2017年07期

【摘要】：基于以2014年Landsat 8衛(wèi)星影像以及2014年1月和6月野外采樣數(shù)據(jù)并結(jié)合GIS技術(shù)與統(tǒng)計(jì)方法,分析贛江流域土地利用格局與河流水體可溶性重金屬分布的關(guān)系.結(jié)果表明:贛江流域土地利用類(lèi)型與可溶性重金屬含量具有顯著相關(guān)性,其中城鎮(zhèn)建設(shè)用地與贛江可溶性重金屬含量關(guān)系最為密切.林地與草地的面積比例與可溶性重金屬呈現(xiàn)顯著的負(fù)相關(guān),但這種負(fù)相關(guān)僅存在于河流下游的較低坡度區(qū)域.整個(gè)子流域、河流緩沖區(qū)及坡度3個(gè)尺度上土地利用結(jié)構(gòu)與河流可溶性重金屬含量的關(guān)系,具有很大的差異,不同坡度大小上土地利用結(jié)構(gòu)能較好地反映人類(lèi)活動(dòng)強(qiáng)度.低坡度區(qū)域由于人類(lèi)活動(dòng)強(qiáng)度較大,因此低坡度區(qū)域內(nèi)土地利用結(jié)構(gòu)對(duì)河流可溶性重金屬含量具有更大的影響.社會(huì)經(jīng)濟(jì)要素和河流可溶性重金屬含量的關(guān)系密切,工農(nóng)業(yè)活動(dòng)的強(qiáng)弱與贛江可溶性重金屬含量的高低存在明顯的對(duì)應(yīng)關(guān)系.贛江流域土地利用結(jié)構(gòu)與河流可溶性重金屬含量間的關(guān)系存在季節(jié)的差異,總體上,豐水期與土地利用結(jié)構(gòu)關(guān)系更顯著.
[Abstract]:Based on the Landsat 8 satellite images in 2014 and field sampling data in January and June 2014, combined with GIS techniques and statistical methods, the relationship between land use patterns and the distribution of soluble heavy metals in river bodies in Ganjiang River Basin was analyzed. The results showed that there was a significant correlation between land use types and soluble heavy metals content in Ganjiang River basin, and the relationship between urban construction land and the content of soluble heavy metals in Ganjiang River was the most close. There was a significant negative correlation between the area ratio of forestland and grassland and soluble heavy metals, but only in the lower slope area of the lower reaches of the river. The relationship between the land use structure and the content of soluble heavy metals in the river on the three scales of river buffer zone and slope is very different. The land use structure in different slope can reflect the intensity of human activity. Because of the high intensity of human activities, the land use structure in the low slope area has a greater influence on the soluble heavy metal content in the river. The relationship between the social and economic factors and the soluble heavy metal content in rivers is close, and there is an obvious corresponding relationship between the industrial and agricultural activities and the content of soluble heavy metals in Ganjiang River. There are seasonal differences between land use structure and soluble heavy metal content in Ganjiang River basin. In general, the relationship between water abundance and land use structure is more significant.
【作者單位】： 江西師范大學(xué)地理與環(huán)境學(xué)院;江西師范大學(xué)鄱陽(yáng)湖濕地與流域研究教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(No.41361018,41401587) 鄱陽(yáng)湖濕地與流域研究教育部重點(diǎn)實(shí)驗(yàn)室(江西師范大學(xué))開(kāi)放基金資助項(xiàng)目(No.PK2013002) 江西省教育廳科技計(jì)劃項(xiàng)目(No.GJJ160276)~~
【分類(lèi)號(hào)】：X522

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