浙江农林大学学报2012，Vol.29Issue(4)：498-509,12.
珍稀濒危植物堇叶紫金牛生存群落结构特征及物种多样性
Structural characteristics and species diversity of the endangered plant A rdisia violacea
摘要
Abstract
To understand the Ardisia violacea plant community's structural characteristics so as to protect this rare and endangered plant, a survey of community structure and species diversity was conducted through quadrat sampling in Lühetang Forest Park, Jiande City, Zhejiang Province. Using permanent plots and examining every individual within, all trees were identified and measured. To describe community population characteristics , importance values of tree populations were calculated, Raunkiaer' s life-form spectrum was used, and species diversity of tree and shrub layers were analyzed using Shannon-Weiner, Simpson, and Pielou evenness indexes. The population age structure of the different tree layer species were categorized into three regeneration types; unimodal, sporadic, and inverse-J. Results showed 47 families, 79 genera, and 116 species of vascular plants. Raunkiaer's life-form spectrum revealed that micro-phanerophytcs and nano-phanerophytes characterized the forest. Structural features of the community for the woody layer included two evergreen conifers species, 48 evergreen broadleaved trees species, and 33 deciduous broadlcaved trees species. Using habitat, community structure, and species composition, communities with Ardisia violacea were found in three forest community types: Castcmopsu eyrei -Castanopsts fargesii, mixed Cunninghamia lanceolata -broadleaf, and Cunninghamia lanceolata. Vertical structure was composed of four layers: tree, shrub, herb and interlayer with the height structure being similar (,P>0.05). Species richness in the three communities was greatest for the shrub layer (45, 30, 29, P<0.05). For the Shannon-Weiner index, the mixed Cunninghamia lanceolata-broadleaved community herb layer was biggest (2.42, P<0.01); whereas the Castanopsis eyrei-Castanopsis fargesii and Cunninghamia lanceolata community shrub layers were largest (2.61, 2.37,P< 0.01). For the Simpson index, the Castanopsis eyrei-Castanopsis fargesii and the Cunninghamia lanceolala community tree layers were hugest (5.130, 6.957, P<0.01) ; whereas the mixed Cunninghamia lanceolata-broadleaved community shrub layer was largest (6.097, P＜0.01＝. Unimodal type species included Liquidambar formosana, A Iniphyllum fortunei, and Pinus massoniana; sporadic type species included Cyclobalanopsis glauca, Schirna superha, and Lindera aggregata; and inverse-J type species were Cunninghamia lanceolata, Castanopsis eyrei, Castanopsis fargesii, and Symplocos caudate. In allusion to the biological characteristics of Ardisia violacea, means of in situ conservation was supposed to be taken as the most important management couritermeasure for the forest in the future. In addition, it should be done that intermediate selective cutting of the subordinate species in the tree and shrub layer so as to create a good condition for Ardisia violacea populations regeneration and development. [Ch, 2 fig. 7 tab. 29 ref. ]关键词
森林生态学/珍稀濒危植物/堇叶紫金牛/群落结构特征/物种多样性Key words
forest ecology/ rare and endangered plant/ Ardisia violacea/ community structural characteristics/ species diversity分类
农业科技引用本文复制引用
马凯,夏国华,闫道良,谢文远,严彩霞,吴家森,李根有..珍稀濒危植物堇叶紫金牛生存群落结构特征及物种多样性[J].浙江农林大学学报,2012,29(4):498-509,12.基金项目
浙江省科学技术重大项目(2006C12059-2) （2006C12059-2）
浙江农林大学科研发展基金资助项目(2008FK53) （2008FK53）
