辽西地区沙地刺槐林间水土保持效果研究

于2017~2019年在刺槐林与未造林的沙地内设立径流小区进行比较林间水土保持的效果,其结果表明:2013年在沙地上营造刺槐林后,无人为干扰的情况下,林间的郁闭度、灌木及草本植物的覆盖度和植物的多样性较对照处理均增加;土壤流失量、地表径流量均较对照大大降低,水土保持的效果明显。总体来看,辽西地区沙地上营建刺槐林有助于提高植物的覆盖度和多样性,可有效减少土壤流失、地表径流,生态效益、经济效益明显。

Study on the Effect of Soil and Water Conservation among Robinia pseudoacacia Forests in West Liaoning

In order to explore the effect of soil and water conservation after the establishment of Robinia pseudoacacia forests on the sandy land in western Liaoning,a runoff community was set up between 2017-2019 and the unforested sandy land for comparison.The results show that in 2013,Robinia pseudoacacia was constructed on the sand after the forest,without man-made interference,the canopy density between the forest and the coverage of shrubs and herbs increased during the 2017-2019 survey.The plant diversity increased significantly compared with the control treatment,and the amount of soil loss and surface diameter.The flow rate is greatly reduced compared with the control,and the effect of soil and water conservation is obvious.Overall,the construction of Robinia pseudoacacia forests on the sandy land in western Liaoning can help increase plant coverage and diversity,effectively reduce soil erosion,surface runoff,and have obvious ecological and economic benefits.