基于森林自然度的城市森林状况评价

研究应用层次分析法建立森林自然度评价体系，运用等间距法将城市森林自然度综合指数分为5个等级，基于森林自然度对石家庄市5个行政区以及周边接壤区县森林状况进行评价。评价结果表明：长安区、桥东区、桥西区、新华区、裕华区5个行政区和井陉矿区的自然度等级为5，评价结果为人工森林群落；正定县、栾城县、藁城市的自然度等级为4，评价结果为半人工森林群落；鹿泉市的自然度等级为3，评价结果为远天然森林群落；井陉县的自然度等级为2，评价结果为半天然森林群落；石家庄市森林状况自然度等级总体偏低。最后，根据不同区域的评价结果提出相应的经营措施。

Urban forest condition evaluation based on forest naturalness

A forest naturalness evaluation system was established by applying the analytic hierarchy process. By using the equidistance method the urban forest naturalness composite index as divided into five grades. Based on the forest naturalness, the forest conditions of five boroughs in Shijiazhuang and the surrounding counties were evaluated. The evaluation results showed that Changan District, Qiaodong District, Qiaoxi District, Xinhua District, Yuhua District and Jingxing Mining Area are listed at naturalness Level 5 as artificial forest community; Zhengding County, Luancheng County and Gaocheng Town are listed at natu- ralness Level 4 as semiartificial forest community; Luquan Town as faroff natural forest community is at naturalness Level 3; and Jingxing County at naturalness Level 2 belongs to seminatural forest community. Accordingly, Shijiazhuang City belongs to the low forest nat- uralness level in the mass and simultaneously, some corresponding mcountermeasures are proposed according to the above assessments.