辽东山区水源涵养林群落结构的分析与评价

Analysis and Evaluation on Community Structure of Water Conservation Forest in the East Liaoning Mountain Region

为探索水源涵养林林分结构的最佳配置模式,针对辽东山区清原森林生态实验站的天然次生林,选取了6个小班,设立18块标准地作为典型林分类型的代表进行群落结构分析。运用AHP层次分析法,分析评价了不同林分类型的群落结构与水源涵养生态功能的关系,结果表明,辽东山区天然次生林中中龄林的水源涵养能力高于近熟林的水源涵养能力;胡桃楸混交林的水源涵养能力高于柞树混交林的水源涵养能力;水源涵养能力的大小与枯落物厚度成正比。

In order to explore the best configuration mode of the water conservation forest structure,18 standard lands were chosen from six forest units in the Forest Experimental Station of Natural Secondary Forest in Qingyuan（Mountain region of the eastern Liaoning）and analyzed as typical forest types.AHP（Analytic hierarchy process）method was used to evaluate the connection between different forest structures and water conservation capacity.The results showed that the water conservation capacity of the middle-aged forests was better than that of the nearly mature forests.In addition,the capacity of Juglans mandshurica mixed forests was better than that of oak mixed trees.The water conservation capacity was proportional to the thickness of litter from trees.