研究结果进一步说明了草原生态系统对放牧反应的复杂性。
The results further show steppe ecosystem complexity under grazing systems.
该模型采用比较典型的草原生态系统中的食物链作为建模对象。
The modeling object is the food chain in grassland ecosystem which is a representative one.
因此可统一使用钼锑抗比色法测定草原生态系统土草畜样品中的磷含量。
Because of this, the above methods except MADAC are not necessary to be used in estimating the phosphorus content in samples from soil, pasture and livestock products in grassland ecology system.
承德坝上地区，属寒温带半湿润草原季风气候，森林草原生态系统脆弱，自我恢复能力较差。
The climate in upper dam region of Chengde prefecture is that of frigid temperate zone, semi damp grass land and monsoon.
另外针对欧亚大陆典型草原生态系统中实生苗动态对于刈割或放牧干扰的响应还很少有实验性研究。
Moreover, the responses of seedling dynamics to different disturbances such as mowing and grazing in Eurasian typical steppe ecosystems have been scarcely studied before.
当家畜的放牧时间和载畜率类似于草原生态系统进展下的模式时，草地可保持它的生产力和植被组成。
It is concluded that range ecosystems may sustain their productivity and composition when grazing time and stocking rate resemble the grazing pattern representing the ecosystem progressing.
当家畜的放牧时间和载畜率类似于草原生态系统进展下的模式时，草地可保持它的生产力和植被组成。
It is concluded that range ecosystems may sustain their productivity and composition when grazing time and stocking rate resemble the grazing pattern representing the ecosystem progressing.
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