摘要
为了揭示木麻黄防护林群落不同演替阶段的物种多样性的变化规律,为中国沿海木麻黄防护林的恢复和重建提供理论依据,采用典型抽样法,选取了海南文昌滨海台地不同林龄的木麻黄(Casuarina equisetifolia)防护林,对林下植物物种组成和植物多样性进行调查研究。结果表明,木麻黄防护林下出现的植物种类为19科31属32种,其中木本植物6科6属8种;草本植物14科24属24种。黑面神(Breynia fruticosa)、马樱丹(Lantana camara)、银合欢(Leucaena leucocephala)、丰花草(Borreria stricta)、白花草(Habenaria dentata)等物种几乎在木麻黄林的各个年龄阶段出现。随着林龄的增加,林下物种总丰富度指数明显在增长。Simpson指数和Shannon-Wiener指数表现为前期物种多样性随林龄的增加而增高,后期稳定不变。说明滨海台地的木麻黄沿海防护林随着林龄的增长,植被群落的生境趋于稳定。
Th is paper ai ms to reveal the species diversity of Casuarina equisetifolia shelter forest at different stages, as well as to provide a theoretical basis for the recovery of coastal C. equisetifolia in China. By taking C equisetifolia of different ages in coastal terraces of Wenchang, Hainan as the sample, the present study surveyed the understory vegetation and its diversity. The results were as follows： There were 32 species of plants belonging to 19 families and 31 genera, among which 8 species and 6 genera and 6 families were woody plants, 24 species and 24 genera and 14 families were herbaceous plants. Breynia fruticosa, Lantana camara, Leucaena leucocephala,Borreria stricta and Habenaria dentata could be found almost throughout each age stage of C. equisetifolia forest.The understory species richness index increased with the increase of forest age. The Simpson index and ShannonWiener index showed that the species diversity increased with the increase of forest age at earlier stage, but kept stable at later stage. These results indicated that as C. equisetifolia forests in coastal terraces grow, the understory vegetation tends to be stable.
出处
《热带作物学报》
CSCD
北大核心
2016年第2期359-364,共6页
Chinese Journal of Tropical Crops
基金
海南大学研究生处"海南大学林业与生态研究生实践基地项目"
海南省省属科研院所技术开发研究专项"海南岛滨海台地不同森林类型土壤碳储量研究"(No.KYYS-2015-21)
林业公益性行业科研专项"海南岛东北部沿海防护林生物量与碳储量监测与评价研究"(No.201304320)
关键词
海南
木麻黄
林龄
植物多样性
沿海防护林
Hainan
Casuarina equisetifolia
Forest age
Plant diversity
Coastal shelter forest
