滇中地区主要竹林土壤抗蚀性能研究

Soil Anti-Erodibility of Several Bamboo in Central Yunnan

摘要: 通过揭示不同竹林土壤的抗蚀性能，为云南泥石流区域治理提供选择竹种的依据。本文对不同竹林土壤有机质含量、水稳性团粒风干率、水稳性指数和土壤抗剪力四个指标进行了分析研究，结果表明土壤抗蚀性方面从大到小依次是：灰金竹、实心竹、慈竹，然而慈竹林土壤抗剪强度较大。这说明在护坡方面灰金竹林较好，而在护岸和浅层滑坡防护上慈竹较好。

Abstract: The aim of this study is to provide evidence for selection of bamboo for debris flow control in Yunnan by revealing soil anti-erodibility of different bamboos. This paper analyzes organic content, the air dry rate of water-stable crumb, water stable index and soil shear resistance of soil of several bamboo. The re- sults showed that the soil anti-erodibility of bamboo from big to small are Phyllostachys sulphurea, Fargesia fractiflexa Yi, Neosinocalamus affinis (Rendle) Keng f., but the soil shear resistance of Neosinocalamus affinis (Rendle) Keng f. is maximal. It is concluded that Phyllostachys sulphurea is suitable for slope protection by veg- etation and Neosinocalamus affinis (Rendle) Keng f. is suitable for bank protection or shallow landslide control.