The natural spruce-fir mixed stand is one of the main forest types in China, and also has large proportion in the civil and national consuming.
天然云冷杉针阔混交林是我国的主要森林类型之一，在国民用材中占有相当大的比重。
The physical property of soil water was measured and studied by comparative experimental method in the main forest types in Xiaoxing 'an Mountains after harvesting.
采用对比实验的方法，对小兴安岭林区主要森林类型采伐后土壤水分物理性质进行了测定和研究。
The forest model is composed of a layer of discrete random different types of non-spherical particles, including the type of trunk, main branch, often sprawling and leaves.
森林模型是由一层离散随机的不同种类的非球形粒子构成，非球形粒子的种类要区分树干、主枝、旁枝和树叶。
The canopy interception for rainfall, the infiltration and water-holding capacity of soil of main original secondary forest types in eastern mountain areas of Liaoning province were studied.
主要研究了辽宁东部山区天然次生林林冠截留降雨、林地土壤的渗透性能和贮水能力。
The collocation of forest types is one main research item of constructing waterhead oriented conservation forest in Miyun reservoir.
水源保护林林种的合理配置是密云水库水源保护林建设中的重要研究内容之一。
The collocation of forest types is one main research item of constructing waterhead oriented conservation forest in Miyun reservoir.
水源保护林林种的合理配置是密云水库水源保护林建设中的重要研究内容之一。
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