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Heterogeneity-diversity Relationships in natural areas of Yunnan,China

Chinese Geographical Science 2021年第3期31卷 506-521页

作者： LIU Feng HU Jinming YANG Feiling LI Xinwang Institute of International Rivers and Eco-security Yunnan UniversityKunming 650500YunnanChina Yunnan Key Laboratory of International Rivers and Transboundary Ecosecurity Yunnan UniversityKunming 650500YunnanChina

Understanding regional environmental heterogeneity(EH)and biodiversity relationships(heterogeneity-diversity relationships:HDRs)is the first step toward coupling environmental variables with biodiversity surrogates into regional systematic conservation ***,there is no universal method for determining regional HDRs that considers various environmental variables and biodiversity in different *** study selected 32 nature reserves as natural areas in Yunnan,China,to examine regional HDRs in *** calculated 17 EH parameters(of soil,topography,and climate)and three(ecosystem,plant,and animal)biodiversity indices in the nature *** examining the explanatory power of each EH parameter and area of the nature reserve,we identified the primary parameters and constructed an optimal model for each biodiversity *** explanatory powers of these parameters varied for each biodiversity index,and those of climatic parameters were generally higher than soil and topographic heterogeneity *** of the temperature annual range,followed by area and heterogeneity of soil type,were important parameters for ecosystem diversity of Yunnan and the optimal model explained 56.9%.Plant diversity was explained 54.5%by its optimal model,consisting of heterogeneity of precipitation of the coldest quarter and annual *** of temperature annual range was important for animal diversity in Yunnan and explained 29.6%of its optimal *** study suggests that EH parameters can be an effective surrogate for biodiversity,therefore,we suggested that the significance and role of climatically heterogeneous regions for the conservation of biodiversity in Yunnan should be further studied in the future.

关键词： biodiversity environmental heterogeneity heterogeneity-diversity relationships(HDRs) natural areas Yunnan,China

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The Evolving Role of Botanical Gardens and natural areas:A Floristic Case Study from Royal Botanical Gardens,Canada

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植物分类与资源学报 2011年第1期33卷 123-131页

作者： David A.GALBRAITH Natalie E.IWANYCKI Brechann V.McGOEY Jamie McGREGOR James S.PRINGLE Carl J.ROTHFELS Tyler W.SMITH Royal Botanical Gardens BurlingtonON University of Guelph GuelphON Duke University DurhamNC Eastern Kentucky University RichmondKY

As leaders calling for the conservation of the world's plants,botanical gardens protect plants within living *** also study,manage and restore plants in natural *** Botanical Gardens(Ontario,Canada) has integrated both horticultural and natural heritage in its mission for *** by municipal leaders in the 1920s as a combination of nature sanctuaries and civic gardens,RBG now includes forests,wetlands and other habitats,gardens and built *** RBG is Canada's largest botanical garden on the basis of *** the 1950s RBG began to inventory plant *** checklist of spontaneous vascular plants now exceeds 1 170 species,of which 752 are *** is 37% of Ontario's native vascular plants and 19% of the native vascular flora of *** RBG nature sanctuaries are among the richest locations in Canada for species-level *** examine the history of floristic exploration within RBG and compare plant species-area relationships among protected natural areas in *** comparison supports the contention that the nature sanctuaries,and in particular Cootes Paradise,could be considered an important area for plants in Canada,and relative to the nation's flora,a biodiversity *** fact that a candidate vascular plant hotspot for Canada lies within a major botanical garden presents opportunities for raising public awareness of the importance of plant diversity,as well as focusing attention on the scientific and conservation biology needs of communities and individual species in this area.

关键词： Botanical garden Ontario natural areas Biodiversity Species-area curve Species richness

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