Dam construction brings both benefits and harms to the ecological environment. This paper focuses on the impact of the construction of mega-dams on regional climate. Based on the national precipitation and temperature data from 1990 to 2012 from more than 2400 national stations of the National Meteorological Information Center, this paper analyzes Xiaolangdi Dam's influence on the Yellow River's climate and the Three Gorges Dam of the Yangtze River with geostatistics knowledge. The following results are obtained. (1) According to the analysis of the climate time and space distribution in the Yellow River Basin and the Yangtze River Basin, the dam's construction caused a drop in temperature in the reservoir area, which decreased by about 0.12 °C. On the other hand, the dam's construction also caused the temperature in the downstream area to rise by about 0.6 °C. (2) According to the analysis of regional climate correlation, the rise of the dam's water level will cause the temperature of the reservoir area to drop to a certain extent. The correlation between the temperature in the Three Gorges and the water level changes in the Three Gorges reaches −0.578. (3) According to regional climate statistics analysis, the dam's construction has reduced the temperature difference in the reservoir area.

大坝建设对生态环境有利也有弊。本文重点研究巨型水坝建设对区域气候的影响。本文基于国家气象信息中心2400多个国家站1990-2012年的降水和气温数据，利用地统计学知识分析了小浪底大坝对黄河气候和长江三峡大坝的影响。得到以下结果。（1）根据黄河流域和长江流域气候时空分布分析，大坝建设导致库区气温下降约0.12℃。另一方面，大坝' 施工也导致下游地区气温上升约0.6℃。（2）根据区域气候相关性分析，大坝水位上升会导致库区气温在一定程度上下降。三峡气温与三峡水位变化的相关性达到-0.578。（3）根据区域气候统计分析，大坝的建设减少了库区的温差。三峡气温与三峡水位变化的相关性达到-0.578。（3）根据区域气候统计分析，大坝的建设减少了库区的温差。三峡气温与三峡水位变化的相关性达到-0.578。（3）根据区域气候统计分析，大坝的建设减少了库区的温差。