吉林金沟岭林场云杉、冷杉林健康评价研究

基于样地调查数据和森林资源二类调查数据，对金沟岭林场不同经营目的云杉、冷杉林的不同生长阶段进行了健康评价。结果表明，云冷杉林的中龄林处于优质、健康、亚健康和不健康状态的样地比例分别为15.4%、38.5%、38.5%与7.7%；近熟林处于优质、健康、亚健康和不健康状态的样地比例分别为10%、70%、10%与10%；成熟林处于优质、健康、亚健康、不健康状态的样地比例分别为7.7%、46.2%、23.1%与23.1%；以防护为主的云冷杉林处于优质、健康状态的样地比例分别为33.3%、66.7%；以用材为主的云冷杉林处于健康、亚健康和不健康状态的样地比例分别为25%、50%、25%。因此，研究对象须加强森林经营，特别是中龄林抚育等措施，以提高云冷杉林的健康等级。

Health Assessment of Spruce-fir Natural Forests in Jingouling Forest Farm of Jilin Province

Based on data of a forest resource inventory and plot investigation, the health status of spruce-fir natural forests under different growth stages with different managements in Jingouling Forest Farm was assessed. The results showed that, the quantity proportions of superior, healthy, sub-healthy and unhealthy states in middle-aged forests accounted for 15.4%,38.5%, 38.5%, and 7.7%, respectively; in near-mature forests, the corresponding figures were 10%, 70%, 10%, and 10%, respectively; in mature forests they were 7.7%,46.2%,23.1%, and 23.1%, respectively. In the forests with the leading function of eco-protection, the proportions of superior and healthy states were 33.3%, and 66.7%. In the forests for timber, the quantity proportions of healthy, sub-healthy and unhealthy states were 25%, 50%, and 25%, respectively. Therefore, measures should be taken to strengthen management of the study object, especially tending measures of middle-aged forests, in order to improve the health level of spruce-fir natural forests.