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Gap Dynamics and Tree Species Diversity in a Tropical Montane Rain Forest of Hainan Island,China 被引量:1
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作者 ZANG Runguo JIANG YouxuThe Research Institute of Forest Ecology, Environment and Protection Chinese Academy of Forestry, Beijing 100091, China 《Chinese Forestry Science and Technology》 2002年第1期16-25,共10页
Based on investigation of 53 gaps and 25 quadrats (15m×15m each) of non-gap closed stand in an old-growth tropical montane rain forest of Hainan Island, China, canopy disturbance regimes and gap regeneration were... Based on investigation of 53 gaps and 25 quadrats (15m×15m each) of non-gap closed stand in an old-growth tropical montane rain forest of Hainan Island, China, canopy disturbance regimes and gap regeneration were studied. Gaps were elliptical in horizontal form, the ratio of long axis /short axis was about 1.4. Percentage of expanded gaps (EG) and canopy gaps (CG) area in the landscape were 53.5% and 25.2% respectively. EG ranged from 31.4 m2 to 488.2m2 and CG/rom 14.9m2 to 354.2m2, their average sizes ... 展开更多
关键词 gap dynamics gap phase regeneration Hainan Island natural disturbance species diversity tropical montane rain forest
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Seed Dynamics in Relation to Gaps in a Tropical Montane Rainforest of Hainan Island,South China:(Ⅰ)Seed Rain 被引量:1
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作者 Run-Guo Zang Wei-Yin Zhang Yi Ding 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2007年第11期1565-1572,共8页
Seed dynamics is an important part of stand dynamics in forest ecosystems. In this paper, 26 gaps were randomly selected to study the influence of gaps on the spatial and temporal patterns of seed rains in a tropical ... Seed dynamics is an important part of stand dynamics in forest ecosystems. In this paper, 26 gaps were randomly selected to study the influence of gaps on the spatial and temporal patterns of seed rains in a tropical montane rainforest of Hainan Island, South China. Three zones for each gap, including outside gap zone (Non-gap), transitional gap zone (EG-CG), and central gap zone (CG), were designed, and fourseed traps (each lm x lm in size) were placed in each zone. Seed rains were collected by these traps every 10 days from June 2001 to May 2002. Seed rain varied greatly with season and generally exhibited a pattern of unimodal change during the study period: seed abundance and species richness were both greater in the wet season than in the dry season. Gaps significantly influenced the temporal patterns of both species richness and density of seed rains. Gaps had no significant influences on the spatial distribution patterns of seed rain species richness, but significantly affected the spatial distribution pattern of seed rain densities. Among the three different zones of gaps, the outside gap zone generally received more seeds inputs than the two other gap zones. 展开更多
关键词 forest regeneration gap dynamics Hainan Island seed dispersal seed rain supply-side process tropical montane rain forest.
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