Spatial distribution patterns of wetland plants in relation to environmental gra

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6Y2_$I#m.d H:Q7O'x0Spatial distribution patterns of wetland plants in relation to environmental gradient in the Honghe National Nature Reserve, Northeast China

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Abstract:

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Quantifying correlation between the spatial patterns of natural wetland plants and environmental gradient gives better understanding of wetland habitats,which is the fundamental for the strategy making on the protection and restoration of natural wetlands.In this study,the spatial patterns of wetland plants and the environmental gradient of wetland habitats were assessed in the Honghe National Nature Reserve (HNNR) in Northeast China,a wetland of international importance on the Ramsar list.Biophysical parameters' values of wetland plants were obtained by field sampling methods,and wetland mapping at the community scale was completed using remote sensing techniques.Digital delineation of the surface water system,hydrological zoning and wetness index were produced by spatial analysis methods in Geographic Information System.An ecological ordination method and two clustering methods were used to quantify the relationship between the spatial distribution patterns of wetland plants and the corresponding environmental gradients.Such quantitative analyses also present the specific diversity of different types of wetland plants based on the environmental attributes of their habitats.With the support from modern geo-information techniques,the experimental results indicate how four ecotypes of wetland plants spatially transit from forest swamp,shrub wetland and meadow into marsh wetland with increasing wetness index and water table.And they also show how wetland spatial distribution patterns are controlled by an environmental gradient of wetness.Another key finding of this research work is that our results present the exact fundamental differences between marsh and non-marsh plants of 11 wetland plant communities within the core study area.Hence,this case study gives a good sample for better understanding of the complex correlation between the spatial patterns of wetland plants and their environmental attributes using advanced digital analysis methods.It is also useful to show how to integrate geoinformatic techniques with statistical analysis methods based on the field data base.水利论文 H `X9q3e%rkvBiy5LL

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i3M4D qxk'Ta0Author:

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;gHekT7H}XAu2y0ZHOU Demin[1]

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LUAN Zhaoqing[2]水利论文:J'GN+vm A?

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GUO Xiaoyu[3]

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LOU Yanjing[2]水利论文5`6Z_(CSkop)L u

5Ut#P:]7px{s0作者单位:水利论文4k*g[ Y1E*Ng6\*@

*u4u9n"p_0Key Lab of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology,CAS, Changchun 130012, China;Institute of Water Resources and Environment, Jilin University, Changchun 130026, China;College of Resources, Environment and GIS, Capital Normal University, Beijing 100048, China

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Key Lab of Wetland Ecology and Environment, Northeast Institute of Geography and Agricultural Ecology,CAS, Changchun 130012, China

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College of Resources, Environment and GIS, Capital Normal University, Beijing 100048, China

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5Q qDkeI2{%k0地理学报(英文版)

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Journal:

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Journal of Geographical Sciences

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年,卷(期):水利论文3^:zVBV:U1Fl

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2012, 22(1)水利论文C$]FS)K&W Hs

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Keywords:

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wetland水利论文9Tf/s v#y+rq seS

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plant ecology水利论文;d1E,yy(\kqe-A7V

avq YW7qf.~(h0spatial pattern水利论文x%[&c'Ykk1J1V

'sW1f5N6H0environmental gradient水利论文 lH8Pkc

e:WB!K P/eW @3|/?0Honghe National Nature Reserve

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2012年3月20日

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基金项目:水利论文.}tU m t+|F~r&o6~F5i

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Knowledge Innovation Program of the Chinese Academy of Sciences,National Natural Science Foundation of China

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Spatial distribution patterns of wetland plants in relation to environmental gradient in the Honghe National Nature Reserve, Northeast China

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v I4B9h!XFn0[期刊论文] 地理学报(英文版)

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Quantifying correlation between the spatial patterns of natural wetland plants and environmental gradient gives better understanding of wetland habitats,which is the fundamental for the strategy making...

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