辽宁省典型河流萎缩趋势分析

Shrinking Trend Analysis of Typical River in Liaoning Province

根据辽宁省不同气候分区33条典型河流的年径流资料,通过Spearman秩次相关检验法进行计算分析,确定了辽宁省河流萎缩趋势的量化指标,对呈中度及重度萎缩趋势的河流进行了成因初步分析。结果表明,11条重度及中度萎缩河流中,湿润地区及半湿润地区受人类活动影响较大,半干旱地区影响因素较多且相互作用,包括人类活动、气候演变、植被演变及水土流失等。

Based on the thirty-three typical rivers’runoff data in the different climate zones of Liaoning province,the parameters were calculated and analyzed by Spearman rank correlation method,the quantitative index of river shrinking trend in Liaoning province was determined,and a preliminary analysis was carried out on the rivers with moderate or severe atrophy trend.The results show that among the 11 severely and moderately atrophic rivers,the humid and semi humid areas are greatly affected by human activities,and the semi-arid areas are affected by many factors,including human activities,climate evolution,vegetation evolution and soil erosion.