CAJ | 학술논문

采用流域自身对比法，利用潜山流域水文站实测的44 a 降雨量-径流量数据，定量分析了该流域降雨量-径流量变化关系。选择1987年、1999年和2007年3个典型年份，结合植被覆盖度分级图，定量分析研究了大别山地区潜山流域森林植被变化对该区域森林水源涵养关系的影响。研究发现，2007年低植被覆盖区比1987年减少56%，中植被覆盖区比1987年增加12%，高植被覆盖区比1987年增加24%，2007年平均降雨量较1987年减少52%，而平均径流量较1987年减少69%，表明森林覆盖率提高能减少径流，显著降低径流系数，增强流域抗洪能力，使得森林水源涵养能力得到提升。
채용류역자신대비법，이용잠산류역수문참실측적44 a 강우량-경류량수거，정량분석료해류역강우량-경류량변화관계。선택1987년、1999년화2007년3개전형년빈，결합식피복개도분급도，정량분석연구료대별산지구잠산류역삼림식피변화대해구역삼림수원함양관계적영향。연구발현，2007년저식피복개구비1987년감소56%，중식피복개구비1987년증가12%，고식피복개구비1987년증가24%，2007년평균강우량교1987년감소52%，이평균경류량교1987년감소69%，표명삼림복개솔제고능감소경류，현저강저경류계수，증강류역항홍능력，사득삼림수원함양능력득도제승。
Based on the measured data of 44 years from hydrometric station,this paper conducts a quanti-tative analysis on the rainfall-runoff relationship in Qianshan watershed with the method of self-contrast. Based on the classification map of vegetation coverage,the typical years of 1987,1999 and 2007 are se-lected to study the impact of forest vegetation change in Qianshan watershed on water conservation capaci-ty. Comparing the data of 2007 and 1987,the results show that the percentage of low vegetation coverage area decreased by 56% ;the percentage of medium vegetation coverage increased by 12% ,high vegetation 24% ;the average annual rainfall decreased by 52% ,and the average annual runoff 69% . Therefore,we can draw a conclusion that the growth of the vegetation coverage can help cut the runoff and the runoff co-efficient dramatically and improve the flood control ability of the watershed,which enhances the water conservation capacity of the forest.