The hydrologic effects of 30-year old natural Chinese pine forests have been measured.
探讨了30年生油松天然林的水文效应。
Chemical characteristics of oleoresins of sect, strobus in Chinese pine species were studied.
本文研究了中国五针松组松脂的化学特征。
Chinese pine and hemp oakery soil physical property also have very strong correlativity with forestation density.
油松和麻栎林土壤物理性质与造林密度也有很强的相关性。
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