本文运用通径分析、主成分分析和回归分析方法对长宁县万岭箐楠竹林区土壤理化指标和受害指数的关系进行了研究.结果表明:坡位、非毛管孔隙度、交换性铝和速效磷与受害指数之间存在着密切相关关系,是影响竹林生长的重要因子,楠竹林大面积枯黄(死)是多种逆境因子胁迫的结果,其土壤酸化、竹林结构不合理、营养贫乏是诱发因素,虫害的暴发加快了竹的死亡. In this paper, the relationship between soil physical and chemical indicators and damage index in Changling County Wanling bamboo forest was studied by using the methods of path analysis, principal component analysis and regression analysis.The results showed that: slope position, non-capillary porosity, exchangeable aluminum and quick-effect There is a close relationship between phosphorus and victim index, which is an important factor affecting the growth of bamboo forest. The large area of ​​yellow bamboo (dead) is the result of many stress factors, and soil acidification, irrational bamboo structure and poor nutrition are induced Factors, the outbreak of pests accelerated the death of bamboo.