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作 者:孟楚[1] 郑小贤[2] 蒋桂娟[2] 刘东兰[1]
机构地区:[1]北京林业大学森林资源与环境管理国家林业局重点实验室,北京100083 [2]广西生态工程职业技术学院,广西桂林545004
出 处:《西北林学院学报》2014年第6期190-194,共5页Journal of Northwest Forestry University
基 金:林业公益性行业科研专项(20100400203)
摘 要: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。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%,and25%,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.
分 类 号:S757.3[农业科学—森林经理学]
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