鲁西黄泛平原森林木本植物生态对策空间变异研究

Spatial Variation of Ecological Countermeasures of Woody Plants in the Yellow River Plain of Western Shandong

研究植物的生态对策可以了解植物在环境中的资源利用方式,为生态保护及森林经营提供理论依据。本文以聊城市3个不同区域的森林木本植物为研究对象,通过测定叶面积、叶鲜重、叶干重,运用C-S-R比值的工具—StrateFy构建C-S-R三元图,结合土壤理化性质,探究鲁西黄泛平原森林木本植物CSR生态对策以及与环境因子之间的关系。结果表明:(1)在三个区域中高唐地区植被主要采取C(竞争型)对策,占比达到了48.1%,东阿地区主要采取S(耐胁迫型)对策,占比达到了58.4%。(2)三个区域之间存在差异最大的影响因子是叶片全氮含量。(3)植被对于不同生态对策的选择主要与土壤氮和叶片全氮含量有关。鲁西黄泛平原不同区域的森林植被具有多种不同的生态对策,采取不同对策的限制因子主要是土壤氮和叶片氮之间的关系。

Studying the ecological strategies of plants can understand their resource utilization in the environment,and providea theoretical basis for ecological protection and forest management.Taking forest woody plants in three different areas of Liaocheng City as the research object,the leaf area,fresh leaf weight and dry leaf weight of woody plants were determined.C-S-R ternary map was constructed with StrateFy,a tool of C-S-R ratio,to determine the physical and chemical properties of combined soil factors in the sample plot.To explore the relationship between CSR ecological strategies of forest woody plants and environmental factors in the yellow plain of west Shandong Province.The results show that(1)Among the three regions,C(competition type)strategies were mainly adopted in Gaotang area,accounting for 48.1%,and S(stress tolerance type)strategies were mainly adopted in Donga area,accounting for 58.4%.(2)The influence factor with the largest difference among the three regions was leaf total nitrogen content..(3)The selection of different ecological strategies by vegetation is mainly related to soil nitrogen and leaf total nitrogen content.The forest vegetation in different regions of the Yellow River Plain in western Shandong has various ecological strategies,and the limiting factor of different countermeasures is mainly the relationship between soil nitrogen and leaf nitrogen.