摘要
研究分析了云南新平大红山铁矿区植被对土壤侵蚀的控制作用.结果表明,林草植被可以通过提高土壤持水性、增加土壤透水性和尽快降低土壤水分含量控制地表径流;通过提高土壤水稳性和土壤抗蚀性、改善土壤肥力和促进植物生长增强土壤抵御侵蚀力的能力.研究结果还直接表明,林草植被对土壤侵蚀有明显的控制作用.与裸地相比,松林、阔叶林、草地对地表径流的控制率达到63%～89%,对土壤流失的控制率达到70%～94%.该结果对于指导大红山铁矿乃至其他金属矿区水土保持工作具有重要意义.
The control effect of vegetation on soil erosion at Dahongshan Iron Mine of Xingping in Yunnan Province is studied in this paper. The results show that the forest - grass vegetation is able to increase soil infiltration and quickly reduce soil moisture in order to control surface runoff. Through enhancing soil resistance to erosion, the fertility of soil is improved and the growth capability of plants are promoted. It is also shown that the forestgrass vetegation has obvious control effect on soil erosion. Compared with bare soil, it can reduce surface runoff by 63% ~ 89% and soil loss by 70% ~ 94%. It is significant for water and soil conservation in Dahongshan Iron Mine and other metal mineral areas.
出处
《昆明理工大学学报（理工版）》
2005年第6期68-72,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
云南省自然科学基金(项目编号:2002D0017M)
云南省人才基金项目(项目编号:1999D0027G)
关键词
矿区植被
土壤改良
侵蚀控制
水土保持
vegetation in the mining area
soil improvement
erosion control
soil and water conservation
