基于森林资源调查数据的上海市外环林带乔木林资源现状分析

Current Situation of Arbor Resources in Forest Belt of Shanghai Outer Ring Road Based on Forest Resources Survey Data

基于上海市2020年度森林资源监测数据,从林种结构、群落结构、树种结构、林龄结构、郁闭度结构、优势树种(组)结构等6个方面分析上海市外环林带乔木林资源现状。结果表明,外环林带防护功能明显,混交林分比重较高(63.24%),林种结构较为合理,中龄林、近成熟林比重大(分别占57.23%和22.22%),但林分密度过大,树种较为单一,群落结构简单。藉此提出了改善其森林结构和服务功能的建议。

Based on the monitoring data of forest resources in Shanghai in 2020,the current situation of arbor resources in forest belt of Shanghai outer ring road was analyzed from six aspects of forest categories,community,tree species,forest age,canopy density and dominant tree species(groups)structure.The results showed that the forest belt of outer ring road had obvious protective function,the proportion of mixed forests was high(63.24%),the forest species structure was relatively reasonable,and the proportion of middle-aged forest and near mature forest was significant(57.23%and 22.22%respectively),but the stand density was too large,the tree species were relatively single,and the community structure was simple.Some suggestions were put forward to improve the forest structure and service function.