【摘要】 对湘西自治州历时多年的桤木造林推广成效进行全面调查和总结,并对湘西自治州内推广的桤木林分进行样方调查和解析木分析,测定径高生长量、活立木蓄积等,在此基础上分析建立桤木胸径和树高生长、立地因子选择模型,分析湘西自治州桤木林分生长规律和适应性,为湘西自治州森林生态系统的可持续发展和桤木林分可持续经营提供科学依据。更多还原

【Abstract】 By investigating and summarizing the effect of Alnus cremastogyne afforestation extension in Xiangxi Autonomous Prefecture, this paper carried out the sample plot investigation and analysis of A.cremastogyne forest in Xiangxi Autonomous Prefecture. The growth of diameter, height and the volume of standing trees were measured as well. On this basis, the models of alder DBH,tree height growth and site factor selection were established, the growth regulation and adaptability of A.cremastogyne in Xiangxi Autonomous Prefecture were analyzed. The results provided important scientific basis for sustainable development of forest ecosystem and sustainable management of A.cremastogyne stand in Xiangxi Autonomous Prefecture.更多还原