Injury mechanism of acid rain on plant and its ware earths contro1

Injury mechanistns of acid rain on plant have been expounded from proton effect，ion effect，photosynthesis effeet and free radical effect．On this basis，the mechan isms of the application of rare earth in the contro1 of plant metabolism and alleviation of the effect of acid rain on plant are discussed．Additionally，the directions of endeavor in the research are analyzed．