黃土高原降雨驅(qū)動(dòng)下流域碳輸移特征及其碳流失評(píng)估:以羊圈溝壩系流域?yàn)槔?/H1>
發(fā)布時(shí)間：2018-05-11 14:32
本文選題：黃土高原 + 碳輸移�。� 參考：《環(huán)境科學(xué)》2017年08期
【摘要】：通過(guò)對(duì)黃土高原典型壩系流域雨季碳沉降與徑流碳輸移過(guò)程的研究,探討降雨徑流過(guò)程對(duì)流域碳流失的驅(qū)動(dòng)機(jī)制,并進(jìn)一步評(píng)估流域碳侵蝕通量.結(jié)果表明,羊圈溝壩系流域濕、干季碳沉降月通量為3.33 kg·hm~(-2)、2.18 kg·hm~(-2),干濕季碳沉降存在一定變化且對(duì)流域碳輸出貢獻(xiàn)較小.流域8月碳輸出量為944.89 kg·km~(-2),其中DOC、DIC輸出量分別占55.39%、44.61%;9月碳輸出量為300.29 kg·km~(-2),DOC、DIC輸出量分別占23.03%、79.97%,不同降雨強(qiáng)度徑流的碳流失量不同,總體溶解性無(wú)機(jī)碳輸出比重較大.羊圈溝小雨強(qiáng)降雨事件中徑流溶解性碳輸出量為156.98 kg·km~(-2),中等雨強(qiáng)降雨事件中徑流碳輸出284.60 kg·km~(-2);該流域雨季月均碳流失模數(shù)為1.89 kg·(km~2·mon)~(-1),經(jīng)評(píng)估得出研究區(qū)域年碳流失模數(shù)為2.70kg·(km~2·a)~(-1).
[Abstract]:Based on the study of carbon deposition and runoff carbon transport in typical dam basin of Loess Plateau in rainy season, the driving mechanism of rainfall runoff on carbon loss is discussed, and the carbon erosion flux of watershed is further evaluated. The results show that the monthly fluxes of carbon deposition are 3.33 kg / hm ~ (-1) and 2.18 kg / h ~ (2) C ~ (2 +) in Yangcuigou Dam system. The carbon deposition in dry and wet season has a certain change and has little contribution to the carbon output of the basin. The carbon output in August was 944.89 kg / kg DIC, respectively, which accounted for 55.39and 44.61, respectively, and 300.29 kg / kg DIC in September accounted for 79.97% of the total dissolved inorganic carbon output, respectively. The carbon loss of runoff with different rainfall intensity was different, and the proportion of total dissolved inorganic carbon output was larger. The runoff dissolved carbon output is 156.98 kg / m ~ (-1) and 284.60 kg / m ~ (-1) ~ (-1) ~ (-1) ~ (-1) during the rainy season, and the modulus of carbon loss per month is 1.89kg / m ~ (2) / m ~ (-1) ~ (-1) / m ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1).
【作者單位】： 中國(guó)科學(xué)院生態(tài)環(huán)境研究中心城市與區(qū)域生態(tài)國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);中國(guó)科學(xué)院地理科學(xué)與資源研究所生態(tài)網(wǎng)絡(luò)觀測(cè)與模擬重點(diǎn)實(shí)驗(yàn)室;中國(guó)礦業(yè)大學(xué)(北京)地球科學(xué)與測(cè)繪工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金中英合作重大項(xiàng)目(41571130083) 城市與區(qū)域生態(tài)國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金項(xiàng)目(SKLURE2015-2-2) 中國(guó)科學(xué)院青年創(chuàng)新促進(jìn)會(huì)項(xiàng)目
【分類(lèi)號(hào)】：S157
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 賈s，
本文編號(hào)：1874343
本文鏈接：http://sikaile.net/kejilunwen/nykj/1874343.html
本文選題：黃土高原 + 碳輸移�。� 參考：《環(huán)境科學(xué)》2017年08期
【摘要】：通過(guò)對(duì)黃土高原典型壩系流域雨季碳沉降與徑流碳輸移過(guò)程的研究,探討降雨徑流過(guò)程對(duì)流域碳流失的驅(qū)動(dòng)機(jī)制,并進(jìn)一步評(píng)估流域碳侵蝕通量.結(jié)果表明,羊圈溝壩系流域濕、干季碳沉降月通量為3.33 kg·hm~(-2)、2.18 kg·hm~(-2),干濕季碳沉降存在一定變化且對(duì)流域碳輸出貢獻(xiàn)較小.流域8月碳輸出量為944.89 kg·km~(-2),其中DOC、DIC輸出量分別占55.39%、44.61%;9月碳輸出量為300.29 kg·km~(-2),DOC、DIC輸出量分別占23.03%、79.97%,不同降雨強(qiáng)度徑流的碳流失量不同,總體溶解性無(wú)機(jī)碳輸出比重較大.羊圈溝小雨強(qiáng)降雨事件中徑流溶解性碳輸出量為156.98 kg·km~(-2),中等雨強(qiáng)降雨事件中徑流碳輸出284.60 kg·km~(-2);該流域雨季月均碳流失模數(shù)為1.89 kg·(km~2·mon)~(-1),經(jīng)評(píng)估得出研究區(qū)域年碳流失模數(shù)為2.70kg·(km~2·a)~(-1).
[Abstract]:Based on the study of carbon deposition and runoff carbon transport in typical dam basin of Loess Plateau in rainy season, the driving mechanism of rainfall runoff on carbon loss is discussed, and the carbon erosion flux of watershed is further evaluated. The results show that the monthly fluxes of carbon deposition are 3.33 kg / hm ~ (-1) and 2.18 kg / h ~ (2) C ~ (2 +) in Yangcuigou Dam system. The carbon deposition in dry and wet season has a certain change and has little contribution to the carbon output of the basin. The carbon output in August was 944.89 kg / kg DIC, respectively, which accounted for 55.39and 44.61, respectively, and 300.29 kg / kg DIC in September accounted for 79.97% of the total dissolved inorganic carbon output, respectively. The carbon loss of runoff with different rainfall intensity was different, and the proportion of total dissolved inorganic carbon output was larger. The runoff dissolved carbon output is 156.98 kg / m ~ (-1) and 284.60 kg / m ~ (-1) ~ (-1) ~ (-1) ~ (-1) during the rainy season, and the modulus of carbon loss per month is 1.89kg / m ~ (2) / m ~ (-1) ~ (-1) / m ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1) ~ (-1).
【作者單位】： 中國(guó)科學(xué)院生態(tài)環(huán)境研究中心城市與區(qū)域生態(tài)國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);中國(guó)科學(xué)院地理科學(xué)與資源研究所生態(tài)網(wǎng)絡(luò)觀測(cè)與模擬重點(diǎn)實(shí)驗(yàn)室;中國(guó)礦業(yè)大學(xué)(北京)地球科學(xué)與測(cè)繪工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金中英合作重大項(xiàng)目(41571130083) 城市與區(qū)域生態(tài)國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金項(xiàng)目(SKLURE2015-2-2) 中國(guó)科學(xué)院青年創(chuàng)新促進(jìn)會(huì)項(xiàng)目
【分類(lèi)號(hào)】：S157
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 賈s，
本文編號(hào)：1874343
本文鏈接：http://sikaile.net/kejilunwen/nykj/1874343.html
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