论文部分内容阅读
克拉玛依农业开发区位于温带荒漠气候区,开发建设10余年来地下水位发生了明显抬升,土壤盐渍化威胁变得十分严重。本文利用地下水水位重复观测、地形测量、气象与径流监测数据分析了开发区的地下水位变化过程,并探讨了地下水位变化与气候、地貌、土壤、周围径流补给以及灌溉的关系。发现开发区的地下水位10年间基本呈现持续上升的过程,自1999年建设以后开发区地下水位发生了普遍抬升,整个开发区地下水位平均上升了7.30m,年平均0.73m/a,但存在明显的空间差异。分析认为灌溉是开发区地下水位上升的主要原因,但南部玛纳斯河下泄径流和北侧山麓洪积扇地下水的补给也起到一定的作用,气候变化影响不大。区内地下水位上升的空间差异主要与地貌及土壤组成条件关系密切。
Karamay Agricultural Development Zone is located in a temperate desert climate zone. Since the development and construction for more than 10 years, the groundwater level has obviously risen and the threat of soil salinization has become very serious. In this paper, the process of groundwater level change in the development zone is analyzed by repeated observation of groundwater level, topographic survey, meteorological and runoff monitoring data, and the relationship between the change of groundwater level and climate, landform, soil, surrounding runoff recharge and irrigation is discussed. It is found that the groundwater table in the development zone shows a basically rising process over a 10-year period. Since the groundwater level in the development zone has generally risen since its establishment in 1999, the groundwater level in the entire development zone has risen by an average of 7.30m with an annual average of 0.73m / a, but there is obvious Space difference. Analysis shows that irrigation is the main reason for the rise of groundwater level in TEDA. However, the discharge of Manas River in the south and the recharge of groundwater in the foothills of the north foothills also play a role, and climate change has little effect. The spatial variation of groundwater table in the area is mainly related to the conditions of landform and soil composition.