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《Henan Science》 2017-10
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Niche Characteristics of Stewartia shensiensis and Associated Species in Baotianman Natural Reserve

ZHU Xueling;YE Yongzhong;WU Mingzuo;WANG Chunping;Henan Tianhao Garden Landscape Engineering Company;College of Life Sciences,Henan Agricultural University;College of Forestry,Henan Agricultural University;Henan Provincial Forestry Survey and Planning Institute;  
Using Levins' niche breadth,Whittaker's niche similarity and Pianka's niche overlap,13 tree speciesin Stewartia shensiensis Chang community were surveyed and estimated. The results showed that:the niche breadth ofthe main dominant populations in Stewartia shensiensis Chang community was large. The niche breadth of Stewartia shensiensis Chang and co-dominant species Carpinus cordata Bl,Acer tegmentosum Maxim and Quercus aliena var.acuteserrata Maxim were 1.730 1,1.760 6,1.780 8 and 1.734 9,respectively. The Stewartia shensiensis Chang had ahigher niche similarity with its co-dominant species. There is no significant correlation between niche breadth andniche similarity. The species with broad niche breadth had a larger niche overlap with other species due to its strongresource utilization ability,wide distribution and more competitive. Mmeanwhile,the species with narrow niche breadthcould be difficult to coexistence with other populations due to its weak resource utilization ability,narrow distribution andweak competitive. The niche overlap was not necessarily high among populations with large niche breadth.According to niche overlap,the competition between Stewartia shensiensis Chang and understory species was greaterthan that between co-dominant story species.
【Fund】: 国家林业科技支撑计划(2008BADB0B0301)
【CateGory Index】: S718.5
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