论文部分内容阅读
根据生态条件和优势种原则,可将江西林区草地划分为丘陵地刺芒野古草群系和中低山丘陵地芒群系等8个类型。它们具有次生性、退化性、不稳定性、资源的局限性、易粗老的禾草占有重要地位、豆科植物种类少和伴生植物多样性等特征。这些草地作为一种再生资源,转化为能源相当于每年获得6121—10203万吨标准煤。枯死的草本用于林业可使森林土壤每年获得纯氮、磷、钾46.9万吨,用于牧业其载畜潜力为1 34万头牛单位.
According to the ecological conditions and the principle of dominant species, the grassland in Jiangxi Province can be divided into eight types, namely, the ancient grass grassland of the Thorn Mangrove and the Mountain Group of the middle and low hills. They are secondary, degenerative, unstable, resource constrained, predominantly coarse grasses occupy an important position, leguminous species less and accompanying plant diversity characteristics. As a renewable resource, these grasslands are converted into energy equivalent to 6121-10203 million tons of standard coal each year. The dead herb used in forestry can make forest soil obtain 469,000 tons of pure nitrogen, phosphorus and potassium annually, and its potential livestock carrying capacity in animal husbandry is 1,340,000 cattle units.