西南桦与高阿丁枫混交幼林生长及其混交匹配性分析  

Analysis on growth performance of juvenile mixed-stands and species matching capacity in mixed Betula alnoides and Altingia excelsa stands

作　　者：李莲芳[1] 孟梦[2] 方波[2] 尹五元[1] 段安安[1] 

机构地区：[1]西南林业大学林学院,云南昆明650224 [2]云南省林业科学院,云南昆明650201

出　　处：《西部林业科学》2012年第1期17-23,共7页Journal of West China Forestry Science

基　　金：林业科技成果国家级推广项目计划"高效丰产西南桦×高阿丁枫培育试验示范"(合同编号[2010]48);云南省发展和改革委员会重点科技攻关项目子专题"思茅松;西南桦人工林规模化培育的组装配套技术研究"(总项目编号:云计科字182子专题编号182-01)

摘　　要：通过对普洱江城苦丁茶场及西双版纳普文试验林场西南桦与高阿丁枫不同混交模式的生长量指标进行调查分析,结果表明,(1)10年生前,西南桦的胸径较高阿丁枫速生,林木的平均胸径西南桦大于高阿丁枫;11年生后,林木的平均胸径高阿丁枫大于西南桦;(2)10年生时,普文林场混交林的西南桦和高阿丁枫胸径生长一致(11.7 cm),西南桦树高超出高阿丁枫树高3.0 m。说明混交林中西南桦为早期速生树种;幼林阶段,西南桦和高阿丁枫胸径于不同的时期呈现错峰生长。同时,西南桦和高阿丁枫的地理分布、立地的生态适宜条件和林学特征等分析结果表明这2个树种在适宜的混交模式下属混交匹配的树种。建议采用非均匀密度控制混交,以实现2个树种的良好生长和长期混交。Growth process of diameter at breast height （DBH） and tree height was analyzed for 9-and 12-year-old mixed Betula alnoides and Altingia excelsa stands. The results showed that （ 1 ） the mean DBH of the stand was which of B. alnoides 〉 A. excelsa for the age less than 10-year-old stand since B. alnoides growth was faster than A. excelsa ; （2） Whereas, the DBH of B. alnoides was less than which of A. excelsa in the age older than 11-year-old stand. The differences of DBH and tree height between B. alnoides and A. excelsa was 0. Ocm and 3. Om, respective- ly for 10-year-old mixed stand in Puwen Forest Farm located region of North Tropic. The growth performance indicated that DBH growth fastigiums of B. alnoides and A. excelsa did not present at the same duration in a juvenile mixed stand. Moreover, analyses of geographic distribution, site fitting conditions and forestry characteristics of B. alnoides and A. excelsa imply that the 2 species are mixed matching tree species in a mixed stand. In order to achieving whole rotation mixed the species, uneven rowing spacing prescription was recommended to establish mixed B. alnoides and A. excelsa stand.

关 键 词：西南桦 高阿丁枫 幼林生长 混交 匹配性 模式 

分 类 号：S792.159[农业科学—林木遗传育种]