In the process of secondary succession from conifer - broadleaf forest to broadleaf forest, species richness fluctuated remarkably.
在针阔混交林向阔叶林演替过程中，物种丰富度指数表现为较大的波动性。
2
The number of weed species occurred and population size of each weed species depended directly on the management of the turf, whereas the turf location played the secondary effects on the weeds.
其中，地理位置是草坪杂草分布差异的间接原因，杂草种类的多少及每种杂草的数量与管理水平有直接的关系。
3
According to the Jaccard similarity coefficient, the composition of the ant species all has distinct difference between primeval and secondary forests of the 4 vegetation subtypes.