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Ramet Population Structure of Fargesia nitida （Mitford） Keng f. et Yi in Different Successional Stands of the Subalpine Coniferous Forest in wolong nature reserve

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Journal of Integrative Plant Biology 2006年第10期48卷 1147-1153页

作者： Xiao-Hong Yu Jian-Ping Tao Yuan Li Yong-Jian Wang Yi Xi Wei-Yin Zhang Run-Guo Zang Key Laboratory of Eco-environments of Three Gorges Reservoir Region Ministry of Education School of Life Sciences Southwest University Chongqing 400715 China Institute of Forest Ecology Environment and Protection Chinese Academy of Forestry Beijing 100091 China

Forest structure and succession in wolong nature reserve is influenced by the understory dwarf bamboo population. However, less is known about how the forest succession affects the dwarf bamboo population. To examine the bamboo ramet population growth of Fargesla nitida （Mltford） Keng f. et Yi and to determine how ramet population structure varies along the succession of coniferous forest, we sampled ramet populations of F. nitida from the following three successional stages：（i） a deciduous broad-leaved （BL） stand; （ii） a mixed broad-leaved coniferous （MI） stand; and （ill） a coniferous （CF） stand. We investigated the population structure, biomass allocation, and morphological characteristics of the bamboo ramet among the three stand types. Clonal ramets, constituting the bamboo population, tended to become short and small with succession. The ramet changed towards having a greater mass investment in leaves, branches and underground roots and rhizomes rather than in the culm. With respect to leaf traits, individual leaf mass and area in the BL stand were markedly bigger than those In both the MI and CF stands, except for no significant difference in specific leaf area. The age distribution showed that the bamboo population approached an older age with succession. The results demonstrate that the ramet population structure of F. nitida is unstable and its growth performance is inhibited by succession.

关键词： coniferous forest Fargesia nitida ramet population structure succession wolong nature reserve

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Response of clonal plasticity of Fargesia nitida to different canopy conditions of subalpine coniferous forest

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Frontiers in Biology 2008年第4期3卷 463-469页

作者： Jianping TAO Lixia SONG Yongjian WANG Weiyin ZHANG Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education) School of Life ScienceSouthwest UniversityChongqing 400715China Institute of Forest Ecology Environment and ProtectionChinese Academy of ForestryBeijing 100091China

The aim of this study is to explore the effects of canopy conditions on clump and culm numbers,and the morphological plasticity and biomass distribution patterns of the dwarf bamboo species Fargesia ***,we investigated the effects of canopy conditions on the growth and morphological characteristics of ***,and the adaptive responses of *** to different canopy conditions and its ecological *** results indicate that forest canopy had a significant effect on the genet density and culm number per clump,while it did not affect the ramet *** tended to be few and large in gaps and forest edge plots,and small under forest understory *** ramets showed an even distribution under the closed canopy,and cluster distribution under gaps and forest edge *** forest canopy had a significant effect on both the ramets’biomass and biomass *** light conditions promoted ramet growth and biomass *** amounts of biomass in gaps and forest edge plots were shown by the higher number of culms per clump and the diameter of these *** closed canopy,the bamboos increased their branching angle,leaf biomass allocation,specific leaf area and leaf area ratio to exploit more favourable light conditions in these *** spacer length,specific spacer length and spacer branching angles all showed significant differences between gaps and closed canopy *** larger specific spacer length and spacer branching angle were beneficial for bamboo growth,scattering the ramets and exploiting more favourable light *** summary,this study shows that to varying degrees,*** exhibits both a wide ecological amplitude and high degree of morphological plasticity in response to differing forest canopy ***,the changes in plasticity enable the plants to optimize their light usage efficiency to promote growth and increase access to resources available in heterogeneous light environments.

关键词： Fargesia nitida clonal plant plasticity subalpine coniferous forest wolong nature reserve

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An integrated approach to understanding the linkages between ecosystem services and human well-being

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Ecosystem Health and Sustainability 2015年第5期1卷 2-13页

作者： Wu Yang Thomas Dietz Daniel Boyd Kramer Zhiyun Ouyang Jianguo Liu Center for Systems Integration and Sustainability Department of Fisheries and WildlifeMichigan State UniversityEast LansingMichigan 48823 USA Environmental Science and Policy Program Department of Sociology and Animal Studies ProgramMichigan State UniversityEast LansingMichigan 48824 USA James Madison College and Department of Fisheries and Wildlife Michigan State UniversityEast LansingMichigan 48824 USA State Key Laboratory of Regional and Urban Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085 China Present address:Conservation International 2011 Crystal DriveArlingtonVirginia 22202 USA

In order to use science to manage human-nature interactions,we need much more nuanced,and when possible,quantitative,analyses of the interplay among ecosystem services(ES),human well-being(HWB),and drivers of both ecosystem structure and function,as well as *** a growing interest and extensive efforts in ES research in the past decade,systematic and quantitative work on the linkages between ES and HWB is rare in existing literature,largely due to the lack of use of quantitative indicators and integrated ***,we integrated indicators of human dependence on ES,of HWB,and of direct and indirect drivers of both using data from household surveys carried out atwolong nature reserve,*** examined how human dependence on ES and HWB might be affected by direct drivers,such as a natural disaster,and how human dependence on ES and direct and indirect drivers might affect *** results show that the direct driver(i.e.,Wenchuan Earthquake)significantly affected both households’dependence on ES and their *** impacts differed across various dimensions of ES and well-being as indicated by *** disadvantaged households with lower access to multiple forms of capital,more property damages,or larger revenue reductions also experienced greater losses in *** human dependence on ES helps to mitigate disaster impacts on *** findings offer strong empirical evidence that the construction of quantitative indicators for ES and HWB,especially integrated models using them,is a viable approach for advancing the understanding of linkages between ES and HWB.

关键词： biodiversity conservation China conservation planning Millennium Ecosystem Assessment natural disaster vulnerability Wenchuan Earthquake wolong nature reserve

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