较大的放牧压力下，群落中适口性差、耐牧的杂类草植物渐趋增加。
The primary biomass of the grassland community decreased with increasing grazing intensity.
现代狩猎方法与传统不同，牧场工人们乘着直升机寻找驯鹿，坐上雪上汽车“放牧”，最后将它们运到几百公里之外，给驯鹿生理和心理上都带来不小的压力。
Unlike a traditional reindeer hunt, modern ranchers buzz over the animals in helicopters, herd them with snowmobiles and truck them hundreds of miles, causing them mental and physical stress.
我国由于人口压力大，覆盖很少植被的沙漠生态系统仍然被用于放牧或其他目的。
The desert ecosystems with rare plant cover are still used for grazing and other purposes in China because of the population pressure.
当地对经济增长的需求使得牧业超载放牧情况突出，对环境造成了很大压力。
The overloading of herds is increased by the requirement of economy growth, which caused the high environmental pressure.
造成这一结果的原因是人口压力过大导致过度放牧、盲目开垦等。
The stress of population resulted in the over-grazing and over-reclamation.
今后，应该大力发展以皮燕麦为主的人工草场生产，减轻由于过度放牧对天然草场的压力，恢复和保护高原脆弱的生态环境。
Thus we should develop the artificial grassland in this area in order to alleviate over-feed stress for nature grassland and to restoration and protection the frail eco-environment in this plateau.
对放牧强度R值的分析表明，只有调整放牧强度或减少牲畜头数，才能减缓放牧对草场的破坏和压力。
Modulating grazing intensity and reducing livestock according to analyzing r, and then decreasing livestock's destruction and pressure to the grassland.
对放牧强度R值的分析表明，只有调整放牧强度或减少牲畜头数，才能减缓放牧对草场的破坏和压力。
Modulating grazing intensity and reducing livestock according to analyzing r, and then decreasing livestock's destruction and pressure to the grassland.
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