臭椿和新疆杨树木年轮生态反应值的研究

Tree-ring Ecological Response Value of Ailanthus altissima and Xinjiang Poplar

以山西地区常见的树种臭椿和新疆杨为研究对象,在山西晋中进行树木年轮生态反应值的试验。根据两种树种的年轮宽度的测量结果,计算年轮宽度的离差值,并计算树种在该地区的树木年轮差异,最后得到两个树种在晋中地区树木年轮生态反应值:臭椿为1.079,新疆杨为0.893。臭椿年轮生态反应值高于新疆杨。研究表明,臭椿的生长情况随生态环境变化十分敏感,而新疆杨的生长情况随生态环境变化的影响较小。因此,树木年轮生态反应值可作为评价树种适应生态环境指标之一。

The main research object are Ailanthus altissima and Xinjiang poplar tree, the common tree species in Shanxi area and experiments were carried out in Jinzhong, Shanxi. According to the measurement results of annual ring width of two species, the calculated difference ring width, the tree-ring ecological response value of Ailanthus altissima was 1.079 and Xinjiang poplar was 0.893 in Jinzhong area. Ailanthus altissima＇ring ecological response value was higher than the Xinjiang poplar ring difference. The growth of Ailanthus altissima was very sensitive along with the changes of ecological environment, and growth situation of Xinjiang poplar was less influence. Therefore, the ecological value of the reaction in tree rings could be used as one of the indicators of ecological environment evaluation of species adaptation.