环县典型草原践踏强度与放牧强度关系的跟群观测研究

By tailing up and observing the flocks on steppe of Huan County in Eastern Gansu, we found that a threefold increase in trampling intensity leads to a more than fivefold increase in grazing intensity. That is to say, trampling is more sensible to pasture than appropriate livestock amount and grazing intensity based on the raising and herding of livestock. A relation equation by regression analysis showed that livestock trampling intensity is increased by the power function of grazing intensity. This fully demonstrated that adjusting and controlling the tramping effects of grazing livestock is an important indication of grazing management. The tramping effects of grazing livestock played a key role in preventing the degeneration and maintaining the wholesomeness of the grassland. Besides, it has a threshoud value between the degeneration and maintaining the wholesomeness of the grassland. This threshoud value should be defined under different ecological systems in future research. This is one of the key strategies to optimize grazing management.