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尼泊尔的社区森林计划是十分成功的森林保护计划之一.森林生态系统中的树种在维持植被结构、复杂性和异质性方面起着重要的基础性的作用.本研究分析了尼泊尔拉姆琼县(Lamjung District)亚热带地区的5个社区森林(Community Forest,CF)中树种的组成和更新,为今后的长期研究提供了基础数据,并帮助社区科学地管理社区森林.本研究使用35个样方(20 m×20 m),通过分层随机抽样生成树种数据.结果表明,森林中成年树的密度在575 Ind ha-1(Tilahar CF)到1196 Ind ha-1(Deurali Thadopakha CF)之间,幼树的生长范围为2533 Ind ha-1(Tilahar CF)到4000 Ind ha-1(Thuliban CF),幼苗为19583 Ind ha-1(Tilahar CF)到37500 Ind ha-1(Thuliban CF);成年树种的胸高断面积为28.34 m2 ha-1(Tilahar CF)至49 m2 ha-1(Deurali CF);成年树种的Shannon-Weiner\'s H指数为1.08(Thuliban CF)到1.88(Tilahar CF);异序乌桕(Sapium insigne)、孟加拉榕树(Ficus benghalensis)、西藏长叶松(Pinus roxburghii)、合欢属(Albizia sp.)以及紫薇属的Lagerstroemia parviflore更新较差.总的来说,除了Tilahar社区森林之外,其余社区森林均具有良好的更新,但根据胸径大小等级分布图来看,均没有可持续的更新.在5个社区森林中,成年植株的胸径大小有显著差异,其中Deurali Thadopakha社区森林的成年植株胸径最小.社区森林中的大多数树种更新能力较弱,较少的树种如粗娑罗双(Shorea robusta)、印度锥(Castanopsis indica)以及西南木荷(Schima wallichii)以优势地位维持了社区森林的整体再生,因此在维护社区森林时需要对更新能力较差的物种进行进一步的区分以制定科学的种植管理计划.“,”The community forest program in Nepal is one of the successful conservation initiatives. Tree species in a forest ecosystem have a fundamental role in maintaining the vegetation structure, complexity, and heterogeneity. This study analyzes the composition and regeneration of tree species in five community forests (CFs) of the sub-tropical region, Lamjung district, Nepal for preparing baseline data for long-term research projects and helps the community to manage their CFs scientifically. Tree species data were generated by stratified random sampling using 35 quadrate plots (size: 20 m x 20 m). The density of adult trees in the forests ranged from 575 Ind ha-1 (Tilahar CF) to 1196 Ind/ha (Deurali Thadopakha CF). The sapling ranged from 2533 Ind ha-1 (Tilahar CF) to 4000 Ind ha-1 (Thuliban CF) and seedling from 19583 Ind ha-1 (Tilahar CF) to 37500 Ind ha-1 (Thuliban CF). Similarly, the adult tree basal area varied from 28.34 m2 ha-1 (Tilahar CF) to 49 m2 ha-1 (Deurali CF). The adult tree diversity in- dex (Shannon-Weiner\'s H) also ranged from 1.08 (Thuliban CF) to 1.88 (Tilahar CF). The tree species such as Sapium insigne, Ficus benghalensis, Lagerstroemia parviflore, Albizia sp. and Pinus roxburghii were weak regen- eration. In general, the forests have good regeneration status except for Tilahar Community Forest, but based on the DBH size class distribution diagram, there is no sustainable regeneration. Among the five community forests the DBH size of adults was significantly different, and the DBH of Deurali Thadopakha was the lowest. But only few species have good regeneration and most of the species have weak, poor to no regeneration. The dominancy of fewer species like Shorea robusta, Castanopsis indica, and Schima wallichii accordingly maintain the overall re- generation of tree of CFs, so further plantation needs to be done inside the CF by triage accordingly those species whose regeneration has poor.