常見例句雙語例句In the process of secondary succession from conifer - broadleaf forest to broadleaf forest , species richness fluctuated remarkably.在針闊混交林向闊葉林演替過程中,物種豐富度指數(shù)表現(xiàn)為較大的波動性。Herb is the most dominant proportion in the composition of soil seed banks of these four forest types, which, however, is decreased as forest becomes older in the secondary succession.草本植物無論是在種類還是個體數(shù)量上都是這幾類森林土壤種子庫的優(yōu)勢成分,但隨著森林演替年齡的增加,其所占比例有所減少。journal.kib.ac.cnThe results show that the differences and site conditions different harvesting methods to tree secondary succession of plant communities on the process and direction have varying degrees of impact.結(jié)果表明:立地條件的差異和疫木不同采伐方式對植物群落次生演替的進程和方向都有不同程度的影響。 返回 secondary succession