Quantitative classification of Pinus armandii communities in Qinling Mountains

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Quantitative classification of Pinus armandii communities in Qinling Mountains

LAN Guoyu^1,2;LEI Ruide²;AN Feng¹;CHEN Wei³;ZHAO Yonghua⁴

¹Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences,Danzhou 571737, China;²College of Forestry,Northwest A & F University,Yangling,Shaanxi 712100, China;³Internet Education Center,South China University of Topical Agriculture,Danzhou 571737, China;⁴Shenyang Arboretum,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016, China

Received:2005-04-11 Revised:2005-05-31 Online:2006-02-10 Published:2006-02-10

Abstract

Abstract: Based on the data collected from 36 plots of Pinus armandii communities in Qinling Mountains,and by using vegetation tabular and Ward minimum range cluster analyses,the P.armandii forests in Qinling Mountains could be divided into 5 association groups and 7 associations types:Ass. Pinus armandii+Lespedeza formosa+Arthraxon hispidus,Ass. Pinus armandii+Lespedeza formosa+Ctenitopsis devexa,Ass. Pinus armandii+Rosa multiflora+Carex siderosticta,Ass. Pinus armandii+Lespedeza cyrtobotrya+Artemisia atrovirens,Ass. Pinus armandii+Spiraea wilsonii+Anaphalis sinica,Ass. Pinus armandii+Spiraea wilsonii+Athyrium otophorum,and Ass. Pinus armandii+Duchesnea indica.Reasonable management advices were put forward according to the characteristic of different associations.

Key words: Weak light, High temperature, Fluorescence characteristic, Grain fill, Wheat

LAN Guoyu^1,2;LEI Ruide²;AN Feng¹;CHEN Wei³;ZHAO Yonghua⁴ . Quantitative classification of Pinus armandii communities in Qinling Mountains[J]. cje.

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Quantitative classification of Pinus armandii communities in Qinling Mountains

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