论文部分内容阅读
近年来随着生产建设项目的扩增,济南市南部山区水土流失显著加剧。为保护济南泉水的重要补给区,亟需对南部山区水土流失特征及其治理措施进行深入研究。本研究基于济南市水文局济西水土保持监测实验站径流小区产流产沙数据,结合降雨、土壤和植被因素,对不同坡度下的水土流失特征进行系统分析。研究表明:(1)径流深和土壤侵蚀量随坡度增加而增大,最大值出现在2025°坡面;(2)不同坡度径流深均值与平均雨强具有明显相关性,径流深随降雨强度的增加而增大;土壤侵蚀量除与降雨特征有关外,同时受地表植被与土壤特征影响明显,土壤侵蚀量随降雨强度的增加而增大,随着植被覆盖度的增加而减少,通过坡面植物措施,水土流失程度明显减弱。
In recent years, with the expansion of production and construction projects, the soil erosion in the mountainous areas in the southern part of Jinan City has significantly increased. In order to protect the important supply area of Jinan spring water, it is urgent to conduct an in-depth study on the characteristics of soil and water loss and its control measures in southern mountainous areas. In this study, based on the data of runoff and sediment yield from runoff plots in Jixi Water and Soil Conservation Monitoring Experimental Station of Jinan Municipal Bureau of Hydrology, the characteristics of soil and water loss under different slopes were systematically analyzed with rainfall, soil and vegetation factors. The results show that: (1) Runoff depth and soil erosion increase with the increase of slope, and the maximum value appears at 2025 ° slope; (2) The mean value of runoff depth is significantly correlated with average rainfall intensity. The soil erosion amount is affected by the characteristics of surface vegetation and soil at the same time. The soil erosion amount increases with the increase of rainfall intensity and decreases with the increase of vegetation coverage. Through the slope Surface plant measures, soil erosion significantly reduced.