DOI: 10.1016/j.foreco.2015.09.023
Scopus记录号: 2-s2.0-84942521940
论文题名: Poor seed dispersal, seed germination and seedling survival explain why rubber trees (Hevea brasiliensis) do not expand into natural forests in Xishuangbanna, southwest China
作者: Zhou H. ; Yue H. ; Ai X. ; Chen G. ; Cun M. ; Xie J. ; Tian Y.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 358 起始页码: 240
结束页码: 247
语种: 英语
英文关键词: Rubber tree
; Seed dispersal
; Seed germination
; Seedling survival
; Xishuangbanna
Scopus关键词: Conservation
; Cultivation
; Forestry
; Reforestation
; Rubber
; Rubber plantations
; Rubber tree
; Seed dispersal
; Seed germination
; Seedling survival
; Xishuangbanna
; Seed
; conservation planning
; germination
; introduced species
; regeneration
; rubber
; seed dispersal
; seedling
; survival
; tropical forest
; China
; Xishuangbanna
; Yunnan
; Animalia
; Hevea brasiliensis
; Rattus
英文摘要: Studying seed dispersal and the associated processes of germination, seedling establishment and survival are important for understanding plant regeneration dynamics and dispersal ability, especially for introduced plant species. Rubber trees (Hevea brasiliensis) have been introduced and cultivated in Xishuangbanna in southwest China for over 60. years. However, almost no adult rubber trees occur in natural forests in the region. In order to determine the factors preventing the expansion of rubber trees into natural forests, we investigated the seed dispersal, seed germination and seedling recruitment of rubber trees. Rubber seeds released in natural forests were frequently visited and largely handled by Rattus spp., but the rubber seeds released in rubber plantations were seldom visited or fetched by any animals, indicating that habitat type had a significant effect on the fate of rubber seeds (P<. 0.001). The majority of released rubber seeds were eaten (57.80% in 2012, N= 5795; 64.45% in 2013, N= 12,455) and only a very few seeds were cached under forest litter or soil surface (0.32% in 2012 and 0.16% in 2013). When missing seeds (about 30% of all released seeds) were omitted in the analysis, it was found that the majority of the seeds were removed within 10. m (60-90% in different years and different sites), and only few seeds were transported to more than 30. m (maximum distance was 55. m in 2012 and 67. m in 2013). Rubber seeds buried in natural forests had a lower germination rate (mean. ±. SE. = 11.67. ±. 2.11%, N= 300) compared to those in rubber plantations (mean. ±. SE. = 44.33. ±. 4.25%, N= 300) (one-way ANOVA, P<0.01). Results from our seed germination experiment and natural regeneration survey showed that rubber seedlings had a very low survival rate, both in natural forests and in rubber plantations. Poor seed dispersal, seed germination and seedling survival may explain why rubber trees do not expand into the natural forests in Xishuangbanna. The findings of this study can help to better understand the natural dispersal ability and regeneration dynamics of rubber trees, providing insights important for forest conservation planning. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65232
Appears in Collections: 影响、适应和脆弱性
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作者单位: Yunnan Institute of Tropical Crops, Jinghong, Yunnan, China
Recommended Citation:
Zhou H.,Yue H.,Ai X.,et al. Poor seed dispersal, seed germination and seedling survival explain why rubber trees (Hevea brasiliensis) do not expand into natural forests in Xishuangbanna, southwest China[J]. Forest Ecology and Management,2015-01-01,358