中山市城市生态风景林自然度评价

以中山市生态风景林为研究对象,从22个林地特征指标中筛选出20个敏感性指标因子,通过层次分析法进行自然度评价。评价结果表明：林分的自然度较高的是天然林,其次是经过改造的林分,较低的是人工纯林;中山市生态风景林中不存在近天然（自然度值0.8-1.0）的林分,只有半天然林（自然度值0.6-0.8）、远天然林（自然度值0.4-0.6）、近人工林（自然度值0.2-0.4）和人工林（自然度值0-0.2）这4类林分。在今后的林分经营中,应根据不同的林分自然度制定不同的经营措施。

Naturalness Evaluation of Urban Ecological Landscape Forests in Zhongshan City

Based on the stand characteristic index , the Analytic Hierarchy Process （AHP） method was used to eval- uate the naturalness of ecological landscape forests in Zhongshan Cty. The study selected 20 sensitive factors from the 22 factors of stand characteristic as the basis of naturalness evaluation. The scores of naturalness showed that natural forests presented high naturalness, followed in order by transformed forest and planted pure forest. Among the ecologi- cal landscape forests in Zhongshan City, there found no close - to - natural forest （valued 0. 8 - 1.0）, and there were only the semi - natural forest （0. 6 - 0. 8 ）, far - natural forest （0. 4 - 0. 6 ）, near plantation forest （ 0. 2 - 0. 4） and plantations （0 - 0. 2） . Different management measures should be applied based on the naturalness scoring.