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来源：百度知道 编辑：UC知道 时间：2024/05/16 19:53:34
2 在放牧的影响下，地上现存量在海拔最低的低湿地最高，沙质草地低湿地的过渡带次之，海拔最高的高平原草地最低。
3 草群粗蛋白和粗脂肪含量随着海拔的降低而降低，在海拔最低处其值最低，粗纤维含量随海拔的降低而升高，钙和磷的含量都是在中等海拔处偏高。
4 土壤机械组成中，砂粒和粘粒在海拔最高的高平原草地上含量最高。
5 在土壤养分中，土壤全氮、速效氮、速效钾、有机质含量在沙质草地和低湿地的过渡带最高，土壤全磷、速效磷、全钾含量在沙质草地和低湿地草地较高。
In the pasture to perennial grass forages edge of grass, but the annual ZhuMao, such as soil and pointed YeLi height, coverage and density is larger, the grass and the important value of grass is bigger.
Under the influence of grazing in the lowest elevation, carried on the top, sandy meadow low wetland, the wetland of low diversity of the highest elevation GaoPingYuan grass minimum.
Grass of crude protein and crude fat content with the elevation of the decrease in altitude, the lowest value in the lowest elevation, crude fiber content decrease, calcium and phosphorus content was higher in medium elevations.
Soil mechanical components, sand and clay in the highest elevation of the highest levels of GaoPingYuan grass.
In the soil nutrient, soil nitrogen, phosphorus and nitrogen, rapidly-available potassium organic matter content in sandy meadow and low diversity of wetland soil phosphorus, the highest, rapidly-available phosphorus, total po