三峡大老岭保护区铁坚油杉古树直径生长模型研究

Study on Diameter Growth Model of Old Tree of Keteleeria davidiana(Bertr.) Beissn. in Three Gorges Region Dalaolin Reserve

摘要:

铁坚油杉作为三峡地区的顶级植物群落,其本身的耐寒、耐土壤瘠薄性以及具有的菌根能改善土壤等性质使其成为该地区重要的建群树种.在近年来针对三峡地区水土保持和植被恢复的研究热潮中,该树种生长规律研究及其对环境的适应性研究是非常有意义的.通过对三峡大老岭林场的铁坚油杉古树的直径生长模型及其分析,对该地区自然分布铁坚油杉生长发育规律进行初步探索,结果显示单分子式、一元线性方程、二次回归方程拟合优度较高.

Abstract:

The Three Gorges region's top community of Keteleeria davidiana(Bertr.) Beissn.is defined as very important pioneer species for its tolerance of cold,poor soil and the mycorrhiza which can improve soil.In recent years,this species gradually is being pursued as a hotspot on the research upsurge of soil and water conservation and restoration of vegetation in the Three Gorges region.So,it's meaningful to study the species of Keteleeria davidiana(Bertr.) Beissn's.rule and adaptation.The authors intended to get ...