1999—2013年民勤綠洲地下水埋深年際變化動(dòng)態(tài)及影響因素
發(fā)布時(shí)間：2018-09-13 16:36
【摘要】：為探究?jī)?nèi)陸河下游綠洲地下水動(dòng)態(tài)變化規(guī)律,以民勤綠洲1999—2013年實(shí)測(cè)數(shù)據(jù),在對(duì)綠洲地下水年際尺度埋深動(dòng)態(tài)及潛在影響因素進(jìn)行描述性統(tǒng)計(jì)分析的基礎(chǔ)上,運(yùn)用主成分分析法提取12個(gè)影響地下水埋深的主要因素,并采用灰色關(guān)聯(lián)度方法分析了地下水埋深對(duì)各影響因子的敏感程度。結(jié)果表明:(1)綠洲地下水埋深總體呈逐年增加趨勢(shì),且不同區(qū)域、不同時(shí)期有明顯差異;(2)民勤綠洲地下水埋深動(dòng)態(tài)對(duì)12個(gè)因子的敏感程度依次為化肥使用量農(nóng)膜覆蓋面積年平均氣溫年末耕地總面積人口規(guī)模經(jīng)濟(jì)作物種植面積有效灌溉面積森林面積降水量蒸發(fā)量生產(chǎn)用電度數(shù)大牲畜年存欄量。
[Abstract]:In order to investigate the dynamic variation of groundwater in oasis of the lower reaches of inland river, based on the measured data of Minqin Oasis from 1999 to 2013, the dynamics of interannual depth of groundwater in oasis and its potential influencing factors are analyzed. Twelve main factors affecting groundwater depth were extracted by principal component analysis (PCA), and the sensitivity of groundwater depth to each factor was analyzed by grey correlation method. The results show that: (1) the depth of groundwater in oasis is increasing year by year, and the depth of groundwater in different regions is increasing year by year. (2) the sensitivity of groundwater depth dynamics to 12 factors in Minqin oasis is in order of fertilizer use, agricultural film cover area, annual average air temperature, total cultivated area, population scale, cash crop planting area. Effect irrigated area forest area precipitation evaporation production electricity consumption large livestock annual storage capacity.
【作者單位】： 中國(guó)科學(xué)院西北生態(tài)環(huán)境資源研究院內(nèi)陸河流域生態(tài)水文重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);
【基金】：中國(guó)科學(xué)院創(chuàng)新國(guó)際團(tuán)隊(duì)項(xiàng)目(Y42AC71001)
【分類號(hào)】：P641.6
本文編號(hào)：2241729
[Abstract]:In order to investigate the dynamic variation of groundwater in oasis of the lower reaches of inland river, based on the measured data of Minqin Oasis from 1999 to 2013, the dynamics of interannual depth of groundwater in oasis and its potential influencing factors are analyzed. Twelve main factors affecting groundwater depth were extracted by principal component analysis (PCA), and the sensitivity of groundwater depth to each factor was analyzed by grey correlation method. The results show that: (1) the depth of groundwater in oasis is increasing year by year, and the depth of groundwater in different regions is increasing year by year. (2) the sensitivity of groundwater depth dynamics to 12 factors in Minqin oasis is in order of fertilizer use, agricultural film cover area, annual average air temperature, total cultivated area, population scale, cash crop planting area. Effect irrigated area forest area precipitation evaporation production electricity consumption large livestock annual storage capacity.
【作者單位】： 中國(guó)科學(xué)院西北生態(tài)環(huán)境資源研究院內(nèi)陸河流域生態(tài)水文重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);
【基金】：中國(guó)科學(xué)院創(chuàng)新國(guó)際團(tuán)隊(duì)項(xiàng)目(Y42AC71001)
【分類號(hào)】：P641.6
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