China

Conifers which become stressed following habitat disturbance are often out-competed by better adapted native plant species.  For example, in Bosnia and Herzegovina regeneration in some populations of Picea omorika is being supressed by native Fagus sylvatica because of being better adapted to colonising disturbed forest areas. In Western USA fire-supression has reduced the ability of Cupressus bakeri (which is fire-dependent) to regenerate, hence it is gradually being replaced by Abies magnifica and A. concolor.  Native mistletoes species of the genera Arceuthobium, Phoradendron and Psittacanthus can have a deterimental affect on conifers in North America and Mexico. These shrubby, aerial parasites, which are bird dispersed or have explosive fruits, cause deformation of the infected stems, growth loss, increased susceptibility to other disease agents or insects, and reduced longevity. Species of Abies, Cupressus and Juniperus are particularly susceptable to infestation especially if stressed by habitat disturbance.

Taxa in the category - China:

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Abies beshanzuensis M.H.Wu

Endemic to eastern China in Zhejiang Province where only a handful of mature individuals survive Read full species entry >

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Abies delavayi var. nukiangensis (W.C.Cheng & L.K.Fu) Farjon & Silba

Mainly found in the remote mountain ranges of southwestern China and northeast Myanmar where logging has had some impact. It is listed as Near Threatened. Read full species entry >

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Abies fabri (Mast.) W. G. Craib

Endemic to south-central China where acid rain is the most serious threat and is causing decline or death to many of the trees Read full species entry >

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Abies fabri subsp. fabri

Endemic to western Sichuan province in China where acid rain is the most serious threat and is causing a decline in the population Read full species entry >

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Abies fabri subsp. minensis (Bordères & Gaussen) Rushforth

Endemic to western Sichuan in China where acid rain is the main present-day threat Read full species entry >

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Abies fanjingshanensis W.L.Huang, Y.L.Tu & S.T.Fang

Endemic to the Chinese province of Guizhou where it is in decline due to acid rain. Read full species entry >

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Abies fargesii var. faxoniana Rehder & E.H. Wilson

Distributed in China where in the past logging has reduced the population considerably but acid rain is a present day threat Read full species entry >

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Abies forrestii var. forrestii

A mid to high altitude fir that has previously been impacted by logging. It is assessed as Near Threatened. Read full species entry >

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