| 满苏尔·沙比提,武胜利,陆吐布拉·依明.渭干河－库车河三角洲绿洲近10年地下水位及水质时空变化特征[J].干旱地区农业研究,2010,28(1):212~217 |
| 渭干河－库车河三角洲绿洲近10年地下水位及水质时空变化特征 |
| Temporal and spatial variation features and genetic analysis of groundwater level and water quality in the delta oasis of the Weigan River and Kuqa River in the last decade |
| |
| DOI：10.7606/j.issn.1000-7601.2010.01.38 |
| 中文关键词: 渭干河－库车河 绿洲 地下水位 地下水质 时空变化 成因 |
| 英文关键词:Weigan River and Kuqa River oasis groundwater level groundwater quality temporal and spatial variation cause |
| 基金项目:国家自然科学基金资助项目（40661015） |
|
| 摘要点击次数: 420 |
| 全文下载次数: 519 |
| 中文摘要: |
| 利用渭干河－库车河三角洲绿洲30个观测井近10a的统计资料，分析了该三角洲地下水位和水质的时空变化特征及其成因。结果显示：(1) 地下水埋深的基本规律是西部灌区、渭干河
古河带和冲积扇上部地下水位较深，东部灌区、农牧交错带和冲积扇下部地下水位较浅；研究区地下水海拔高程自南向北升高；地下水埋深受制于局部地形和土地利用方式，与区域地
势关系不大。 (2) 近10 a来，研究区地下水位下降了1.00 m，西部灌区下降了1.34 m，农牧交错带下降了0.41 m；矿化度平均降低了0.54 g/L，农牧交错带降低了1.36 g/L，渭干河古河带矿化度升高了0.43 g/L。(3) 研究区年内最高地下水位和最低水位平均相差0.84 m，冲积扇中部相差1.04 m，冲积扇上部相差0.73 m，2月出现最低水位，4月出现最高水位；地下水质年内最高和最低矿化度季节相差0.21 g/L，冲积扇下部0.51 g/L，中部为0.17 g/L。(4) 人类农业生产活动和蒸发作用是地下水埋深及水质时空变化的主要原因；研究区骨干排水沟渠的开通运行，降低了相应地域的地下水位和矿化度。 |
| 英文摘要: |
| According to the data from the 30 observation wells which are distributed in the delta oasis of the Weigan River and Kuqa River, we analyze the temporal and spatial variation features of the underground water l
evel and water quality during recent 10a in this area. The results show that (1) The absolute elevation of the groundwater rise from south to north in the study area, and the river flows from north to south or southeast, but the depth of the groundwater is not impacted by the big grain, and it is controlled by the local geomorphy and the way of land use. The basic law to the depth of the groundwater is that it is deeper in the western agricultural district, the Furukawa of the Weigan River and in the north of the alluvial fan, but it is lower in the eastern agricultural district, the farming-pastoral zone, and in the north of the a
lluvial fan. (2) During the last decade, the groundwater level dropped by 1.00 m, and the largest decline amplitude is 1.34 m in the western irrigation district; and the smallest decline amplitude is 0.41 m in the farming-pastoral zone; the groundwater salinity reduces 0.54 g/L in average, and the largest decline a
mplitude of the salinity is 1.36 g/L in the farming pastoral zone, but it rises by 0.43 g/L in the Furukawa of the Weigan River. (3) Because of the irrigation and evaporation, there are some differences to the groundwater level in a year and water quality in the study areas. The difference is 0.84 m between the highest and the lowest water level in a year, and the biggest difference is 1.04 m in the central of the alluvial fan, and the smallest is 0.73 m in the north (the upstream), and in the normal year, the lowest water level is on February, and the highes
t on April; There is a little change to the water quality of the groundwater in a year, and the difference is only 0.21 g/L between the highest and the lowest salinity seasons in a year, and the biggest difference is 0.51 g/L in the south of the alluvial fan(the downstream) during the different seasons, and the smallest is 0.17 g/L in the central of the alluvial fan. (4) Evaporation and human activities of agricultural production are the main reasons for the temporal and spatial variation of the depth of the groundwater and water quality, and with the opening and running of the main drainage ditch, lowering the groundwater level and salinity of the corresponding terrene. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| | |