娘子关泉流量衰减原因的初步定量化分析

以娘子关泉为例,从水资源系统观点出发,通过系统水资源要素间转换关系的分析,对引起娘子关泉流量的衰减原因进行了初步量化计算.结果表明,在娘子关泉1956-1979年和1980-2000年前后两个系列平均流量所减少的4.07m3/s中,由于降雨减少、气温升高引起的泉流量减少量为1.28m3/s;泉域西部采煤等导致的水环境变化引起的泉流量减少量为0.84m3/s;岩溶地下水直接开采引起的泉流量减少量为1.48m3/s.

PRELIMINARY QUANTITATIVE ANALYSIS ON THE CAUSES OF DISCHARGE ATTENUATION IN NIANGZIGUAN SPRING

With the change of karst groundwater environment resulted from climate change and human being actions, the discharge of big karst springs in North China has been attenuated wildly since the end of the 20th century. In the paper, the reason for discharge attenuation in Niangziguan spring is preliminarily calculated through the analysis of the connection among the water resource factors. It shows that the average discharge had been decreased 4.07 m^3/s from 1956--1979 to 1980--2000, of which 1.28 m^3/s from the decrease of precipitation and the increase of atmospheric temperature, 0. 84 m^3/s from the change of water environment because of the coal mining to the west of spring drainage area and 1.48 m^3/s from the exploitation of karst water.