by the means of licor-6400 photosynthetic system, the photosynthetic characteristics of birch (betula platyphylla) in climax community in great xingan mountain were studied.
应用li-6400光合作用测定系统,研究了大兴安岭不同演替阶段白桦光合生理生态学特征。
the characters of karst climax community and natural succession including coverage, structure, species diversity, pattern and succession direction have particularity with themselves.