南方地区荒坡山地种植龙须草的生态效益研究

Ecological Benefit of Planting Eulaliopsis binata in Wasteland of South Area.

通过定位试验 ,采用定性与定量相结合的方法 ,研究了荒坡地种植龙须草对土壤理化性状、草地小气候环境和水土流失等的影响。结果表明 ,种植龙须草能降低土壤容重 ,提高土壤总孔隙度、非毛管孔隙度和毛管孔隙度 ,改善土壤通气透水性能 ,增加土壤贮水量 ,降低土温 ,减少水土流失 ,提高土壤肥力 ,可取得良好的生态效益。

Through a long-term stationary experiment combined with the adoption of quantitative and qualitative methods,the ecological effects of planting Eulaliopsis binata on soil physical and chemical properties,micrometeorological environment of grassland,water losses and soil erosion were studied.The results showed that compared with barren land,the land grown with Eulaliopsis binata decreased in soil bulk density,increased in total soil porosity,non-capillary porosity and capillary porosity,improved in water permeability,soil aeration,soil fertility,and soil water-holding capacity,decreased in soil temperature and soil erosion rate.Therefore,planting Eulaliopsis binata in slope wasteland in the purple soil areas can yield favorable ecological benefits.