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。
In the broadleaf forest communities, the broadleaf pollen percentages are near 40%, the conifer are less than 15% while the shrubs and herbs are less than 50%.
在阔叶林植被中，阔叶树种花粉百分比约40%，针叶树种花粉百分比低于15%，灌丛和草本花粉百分比小于50%。
The study extracted the image of the distribution of forest landscape and overlay with forest coverage map. Broadleaf forest, conifer forest , mixed forest and shurb are classified with NDVI.
本研究中提取北京山区的森林景观分布，叠合植被覆盖图，结合NDVI图，将其分为阔叶林、针叶林、灌草和混交林。
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