基于GIS技術(shù)的農(nóng)村非點(diǎn)源污染分析——以渠縣境內(nèi)巴河州河匯流斷面上游區(qū)域?yàn)槔?/H1>
發(fā)布時間：2018-07-26 07:12
【摘要】：為了有效地分析巴河州河匯合口(渠縣境內(nèi))以上流域非點(diǎn)源污染問題,應(yīng)用GIS技術(shù)進(jìn)行水文分析(水系提取、流域劃分)以及污染源的空間分異分析�；谠u估區(qū)的水環(huán)境污染現(xiàn)狀,選取城鎮(zhèn)居民生活污水、農(nóng)村居民生活污水、城鎮(zhèn)地表徑流、集中式畜禽養(yǎng)殖、化肥污染五大污染源,采用源強(qiáng)系數(shù)法和輸出系數(shù)法進(jìn)行COD、TN、TP 3種污染物的流失量計算,并分析其污染負(fù)荷,。結(jié)果表明:(1)評估區(qū)的91.93%的負(fù)荷來源于為農(nóng)村居民生活污水、化肥污染、和城鎮(zhèn)居民生活污水,最主要的污染源為農(nóng)村居民生活污水。(2)評估區(qū)重點(diǎn)治理鄉(xiāng)鎮(zhèn)為三匯鎮(zhèn)。研究成果較為清晰地分析出研究區(qū)非點(diǎn)源污染的分布情況,指出了需要重點(diǎn)治理的地域和污染源。
[Abstract]:In order to effectively analyze the problem of non-point source pollution in the catchment above Huikou (Quxian County) of Bahe River, the hydrological analysis (drainage system extraction, watershed division) and spatial differentiation analysis of pollution sources are carried out by using GIS technology. Based on the present situation of water environment pollution in the assessment area, five major sources of pollution were selected, including urban domestic sewage, rural domestic sewage, urban surface runoff, centralized livestock and poultry farming, and chemical fertilizer pollution. The source strength coefficient method and the output coefficient method were used to calculate the loss of three kinds of pollutants, and the pollution load was analyzed. The results showed that: (1) 91.93% of the load in the assessment area came from rural residents' domestic sewage, chemical fertilizer pollution, and urban residents' domestic sewage, the main source of pollution was rural residents' domestic sewage, and (2) Sanhui Town was the main source of pollution in the assessment area. The distribution of non-point source pollution in the study area is analyzed clearly, and the areas and pollution sources which need to be controlled are pointed out.
【作者單位】： 四川大學(xué)水力學(xué)與山區(qū)河流開發(fā)保護(hù)國家重點(diǎn)實(shí)驗(yàn)室;四川大學(xué)水利水電學(xué)院;
【基金】：四川省科技計劃項(xiàng)目“四川省中小流域農(nóng)村面源污染綜合防治技術(shù)研究與示范項(xiàng)目(2015SZ0212)”
【分類號】：P208;X52
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本文編號：2145249
本文鏈接：http://sikaile.net/kejilunwen/dizhicehuilunwen/2145249.html
[Abstract]:In order to effectively analyze the problem of non-point source pollution in the catchment above Huikou (Quxian County) of Bahe River, the hydrological analysis (drainage system extraction, watershed division) and spatial differentiation analysis of pollution sources are carried out by using GIS technology. Based on the present situation of water environment pollution in the assessment area, five major sources of pollution were selected, including urban domestic sewage, rural domestic sewage, urban surface runoff, centralized livestock and poultry farming, and chemical fertilizer pollution. The source strength coefficient method and the output coefficient method were used to calculate the loss of three kinds of pollutants, and the pollution load was analyzed. The results showed that: (1) 91.93% of the load in the assessment area came from rural residents' domestic sewage, chemical fertilizer pollution, and urban residents' domestic sewage, the main source of pollution was rural residents' domestic sewage, and (2) Sanhui Town was the main source of pollution in the assessment area. The distribution of non-point source pollution in the study area is analyzed clearly, and the areas and pollution sources which need to be controlled are pointed out.
【作者單位】： 四川大學(xué)水力學(xué)與山區(qū)河流開發(fā)保護(hù)國家重點(diǎn)實(shí)驗(yàn)室;四川大學(xué)水利水電學(xué)院;
【基金】：四川省科技計劃項(xiàng)目“四川省中小流域農(nóng)村面源污染綜合防治技術(shù)研究與示范項(xiàng)目(2015SZ0212)”
【分類號】：P208;X52
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相關(guān)期刊論文 前10條
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2 郭勇君;彭靜;;基于GIS技術(shù)的森林資源資產(chǎn)評估系統(tǒng)研究[J];商;2013年18期
3 彭海云;范伊紅;;數(shù)字化校園建設(shè)離不開GIS技術(shù)[J];教育信息化;2006年14期
4 劉德輝;;GIS技術(shù)在旅游業(yè)中的應(yīng)用——兼談旅游地理信息系統(tǒng)及其研究進(jìn)展與展望[J];測繪與空間地理信息;2008年01期
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本文編號：2145249
本文鏈接：http://sikaile.net/kejilunwen/dizhicehuilunwen/2145249.html
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