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The Mechanism Of Ecospace Architecture Of Natural Secondary Forest In The Eastern Mountains Of Northeast China

Posted on:2002-01-15Degree:DoctorType:Dissertation
Country:ChinaCandidate:H J ZhangFull Text:PDF
GTID:1103360032952848Subject:Ecology
Abstract/Summary:PDF Full Text Request
Under changing global climate scenarios and serving functions forest ecosystem, it is important to study spatial structure of natural secondary forest ecosystems that distribute over eastern mountains of Northeast China. Based on ideas of ecological integration and drawing support from regionalized variable theory of geostatistics, the ecospace architecture of Helio-Zhangjia valley and Scio-Qiankun valley in Laoye Ridge Located Eco-Station were studied. The results show that Quercus mogolica species and Acer spp. community are important composition in secondary succession of natural secondary forest ecosystems. Geostatistics is a basic means for the study of global vegetation distribution changes that benefit for figuring out vegetation types of GIS mapping. The integration of spatially related data from located researches also can reduce ecological information loss during the process of scale conversion and coupling and exclude some unnecessary disturbing factors. By means of long term located researches, Kriging 3D-Mapping can benefit the explanation of ecosystem stability, complexity and variation within the limit of a pre-defined spatiotemporal scale and heterogeneity in ecospace. The configuration of ecospace architecture is directly perceived from current Kriging 3D-Mapping of spatial pattern that simultaneously reveals the mechanism of ecospace architecture of natural secondary forest ecosystem. Natural secondary Acer forest ecosystem is an open coadaptive ecosystem with highly ordinal self-organized, self-adjusted and self-optimized structure. In the view of the discriminating relations between physical space and ecological space, it is important to progressively analyze configurations of spatial architecture at different levels of hierarchical organization ecosystem in ecospace. The ecospace can be divided into three parts that contents up-ground ecospace which contents mainly layer~ regeneration layer and successional layer; surface-ground ecospace which contents litter~ seed bank and soil organism; under-ground ecospace which contents soil nutrition elements(N,P,K et a1).. seed bank and soil organism , et al. The results drawing from geostatistics analyzed show that configurations of spatial architecture contain explicitly ecological integration and reflection of spatial geometry within spatial and temporal limits at different levels of self-organized forest ecosystem, which conforms to the fundamental principles of integrative levels and bio-physical holography. Our study indicates that the natural secondary forest of in the Eastern mountains of Northeast China will be replaced by communities of Quercus mongolica, Acer spp., Pinus koraiensi.c or Quercus Mongolica, hi Tiia amurensi.c, Acer spp., Pinus koraiensic under the changing climate scenario. During the processing of ecospace architecture and integration of natural secondary forest ecosystem, the two main controfling ordinal parameters were considered in this paper that are genetic information of species and the spatial network relationships which caused by the interaction among biodiversity mechanism. Through careful analysis the properties of hierarchical levels, conclusions were drawn that the two ordinal parameters act as principal driving force for forming spatial architecture pattern, express concrete information of ecosystem within limits spatial and temporal, maintain homeostasis of ecosystem and impel ecosystem evolution. A framework of Ecospsce...
Keywords/Search Tags:Natural secondary forest, Acer community, Hierarchical organization system, Ecological integration, Spatio-temporal scale and heterogeneity, Regional variable theory, Ecospace, Configuration of spatial architecture, Secondary succession
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