不同下垫面条件下土壤养分流失研究概况

中国的土壤侵蚀十分严重,而随着土壤侵蚀的发生发展将导致土壤养分流失、土壤贫瘠、土地生产力降低等多种问题。影响土壤侵蚀和土壤养分流失的主要因素包括降雨、下垫面条件和人为因素。通过总结多年来对不同下垫面条件下土壤养分流失情况的研究结果,分析下垫面条件中地表植被、坡度、坡长、土壤含水量、土壤颗粒等因素对土壤养分流失的影响,总结目前正在试验或用于实践的各种用于控制或者减少土壤养分流失状况的措施,以期对下一步的研究工作提供参考。

Soil Nutrient Loss Under Different Underlying Surfaces

Soil erosion is very serious in China, and the development of soil erosion will result in soil nutrient loss, poor soils, land productivity reduction and other issues. The main factors that affect soil erosion and soil nutrient loss include rainfall, underlying surface condition and human factor. By summarizing research about soil nutrient loss under different underlying surfaces, the effects of the underlying surface on soil nutrient loss were analyzed, including vegetation, slope, slope length, soil moisture, soil particles and other factors. The current various measures, being tested or used in practice, for reducing or improving soil nutrient loss were summed up to provide a reference for future research work.