Fei-Hua Wu, Juan Chen , Ting-Wu Liu, Zhen-Ji

Li, Juan Chen, Lei Chen, Shao-Hua Guan, Tong-Yang Li, Xue-Jun Dong, Janet

Patton, Hai-Lei Zheng.Plant Ecol,2013.214: 557–569.

The correlation between forest decline andcalcium (Ca) depletion

under long-term acid depositionremains elusive in China due to the high level

ofCa deposition. We compared two species (Abies fabriand Rhododendron

calophytum) for their growthpattern and base elements concentration in

bothpolluted (Mt. Emei) and unpolluted (Mt. Gongga)sites in Sichuan,

southwestern China. A. fabri grown atMt. Emei had poorer crown condition,

slower radialgrowth rate, and lower seedling density under longtermacid

deposition, which correlated closely with thereduced Ca concentration in

foliage and tree-ring, incomparison with those at Mt. Gongga. In contrast,

R.calophytum showed a stable Ca level and thusdisplayed normal growth between

the two sites. Thedifferential capability of these two species to acclimateto

poor Ca environment is one of the keys tounderstanding the long-term ecological

effect ofchanging atmospheric acid and Ca deposition in thesubalpine forest in

southwestern China.

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