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Forest ecosystem is the crucial and unreplaceable part of the forest city.Urban forests play a vital role in sustaining ......
在小兴安岭大青川林场,选择3种不同密度结构的红松人工林林分:低密度红松林(低红,处理A),高密度红松林(高红,处理B)和阔叶树占比例较大......