论文部分内容阅读
建立牧草、灌木、牧草+灌木3种植被恢复模式试验区,分析3种植被恢复模式对矿区废弃地土壤养分、地表径流系数、土壤侵蚀模数的影响。其中牧草+灌木模式对矿区废弃地土壤改良效果好于牧草、灌木2种模式;牧草、牧草+灌木2种模式地表径流系数没有明显变化,最小为0.24;牧草+灌木模式土壤侵蚀模数最小,为207.9 t/(km2·a);3种植被恢复模式均具有改良土壤、减小地表径流和土壤侵蚀的作用,牧草+灌木模式总体效果最好。
The experimental model of three vegetation restoration models was set up, including forage, shrub, grass and shrub. The effects of three vegetation restoration models on soil nutrient, surface runoff coefficient and soil erosion modulus in abandoned mining area were analyzed. The forage shrub + shrub model had better soil improvement effect on abandoned mining land than forage grass and shrub. The surface runoff coefficient of forage grass and shrub + shrub did not change obviously, the minimum was 0.24. The forage soil + shrub model had the least soil erosion modulus, (207.9 t / (km2 · a)). All the three vegetation restoration models had the effects of improving the soil and reducing the surface runoff and soil erosion. The overall effect of forage + shrub pattern was the best.