1999—2013年民勤绿洲地下水埋深年际变化动态及影响因素
发布时间：2018-09-13 16:36
【摘要】：为探究内陆河下游绿洲地下水动态变化规律,以民勤绿洲1999—2013年实测数据,在对绿洲地下水年际尺度埋深动态及潜在影响因素进行描述性统计分析的基础上,运用主成分分析法提取12个影响地下水埋深的主要因素,并采用灰色关联度方法分析了地下水埋深对各影响因子的敏感程度。结果表明:(1)绿洲地下水埋深总体呈逐年增加趋势,且不同区域、不同时期有明显差异;(2)民勤绿洲地下水埋深动态对12个因子的敏感程度依次为化肥使用量农膜覆盖面积年平均气温年末耕地总面积人口规模经济作物种植面积有效灌溉面积森林面积降水量蒸发量生产用电度数大牲畜年存栏量。
[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.
【作者单位】： 中国科学院西北生态环境资源研究院内陆河流域生态水文重点实验室;中国科学院大学;
【基金】：中国科学院创新国际团队项目(Y42AC71001)
【分类号】：P641.6
本文编号：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.
【作者单位】： 中国科学院西北生态环境资源研究院内陆河流域生态水文重点实验室;中国科学院大学;
【基金】：中国科学院创新国际团队项目(Y42AC71001)
【分类号】：P641.6
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