晋中地区不同树木年轮和生态反应值的相关性研究

Study on Correlation Between Tree-ring and Ecological Response Value in Jinzhong Areas

在山西太原和灵石两个地区,对刺槐和旱柳的年轮生态反应值进行了研究。对刺槐和旱柳年轮取样,使用年轮宽度和离差值计算树种在该地区年轮生态反应值。试验结果表明,树木年轮对生态环境适应性有一定的相关性。刺槐树种树木年轮生态反应值为1.292,旱柳树种树木年轮生态反应值为1.762。刺槐在该地区对生态环境反应度较低,长势较好;旱柳对该地区生态环境反应度较高,长势较差。生态反应值与树木生长情况呈负相关,可以作为树木对生态环境适应能力的评价指标。

The locust and Salix matsudana tree-ring samples were studied ,using tree-ring width and deviation calculation of tree species in ecological response value of annual ring in Taiyuan and Lingshi areas.In the experiment,tree rings had some relevance to the ecological environment adaptability.Locust tree-ring ecological response value was 1.292, Salix matsudana tree-ring ecological response value was 1.762.Based on the experimental results,the reaction degree of ecological environment of the locust in the area was low, locust growth was better; the reaction degree of ecological environment of Salix matsudana in the region was high, Salix matsudana growth was poorer.The ecological response value and the trees grow negatively correlated, it could be used as evaluation index of trees to the ability of the ecological environment.