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为了探讨坡耕地的土壤侵蚀规律,提供治理依据,我们于1983年初在太行山区河北省平山县恶石大队建立了坡面土壤流失观测区。开展了不同利用方式、不同坡长的对比观测,现将观测结果介绍讨论如下: 一、坡地的不同利用方式与径流冲刷和土壤中养分流失的关系。 (一)坡地的不同利用方式与径流冲刷量的关系(见表1)。 由表1结果看,坡地的利用方式不同,径流冲刷量大不相同,植被覆盖率近于100％的封山疏
In order to investigate the law of soil erosion on sloping arable land and provide the basis for its management, we established a sloping soil erosion observation area at the beginning of 1983 in the rock group of Pingshan County, Hebei Province. Different utilization methods and comparison of different slope lengths were carried out. The observation results are introduced and discussed as follows: I. The relationship between different utilization patterns of slope land and runoff erosion and soil nutrient loss. (A) The relationship between the different utilization methods of slope land and runoff erosion (see Table 1). From the results of Table 1, the use of different types of slope, runoff erosion is very different, vegetation coverage of nearly 100%