渭北黄土高原刺槐林健康评价指标体系的构建

Construction of index system for stand health assessment of locust forest in the Weibei Loess Plateau

【目的】构建一套科学实用的森林健康评价指标体系,对渭北黄土高原刺槐水土保持林进行健康评价,为该区森林健康经营提供理论依据。【方法】以渭北黄土高原刺槐水土保持林为研究对象,分别对陕西省永寿县槐坪林场、扶风县野河林场和白水县方山林场的刺槐林选设样地进行调查,共设置样地79块。遵循科学性与实用性兼顾的原则,从林分结构、植物多样性和林分稳定性3个方面遴选林分健康状况评价指标,采用模糊数学综合评价模型对刺槐林进行健康评价,并利用水土保持评价模型对评价结果进行验证。【结果】在调查的刺槐林中,健康林占46.84%,亚健康林占13.92%,不健康林占39.24%,整体上处于不健康状态;通过验证,该评价结果是正确合理的。【结论】建立的指标体系及评价方法科学实用,能够比较客观地反映渭北黄土高原刺槐水土保持林的健康状况。

【Objective】The health status of Robinia pseudoacacia plantations in the Weibei Loess Plateau was evaluated by constructing a scientific and practical health assessment index system so as to offer a theoretical basis for forest health management in this area.【Method】79 plots were set and surveyed in Huaiping forest farm of Yongshou,Yehe forest farm of Fufeng and Fangshan forest farm of Baishui respectively based on R.pseudoacaciaplantations.Under the guidance of the principles of scientificalness and maneuve...