Elk were overgrazing the grassland, causing damage to the precious eco-system.

麋鹿在草原上过度啃草，对宝贵生态系统造成了破坏。

For a century, this land had been overgrazed by livestock, like most grasslands around the world.

这片土地就像世界各地大部分草地一样，经历了长达一个世纪过度放牧。

This economic reliance on livestock in certain regions makes large tracts of land susceptible to overgrazing.

在某些地区，家畜是人要经济来源，大土地因此而遭受过度放牧风险。

Firstly, overgrazing and intensive cropping are two ancient but destructive practices that lead to the loss of soil fertility.

首先，过度放牧和集约化种植是两种古老但具有破坏性做法，会导致土壤肥力丧失。

An otter's appetite protects the kelp forest from being overgrazed.

水獭胃口保护了海带森林遭过度啃食。

Together, increased demand, overgrazing, and climate change mean that cashmere is getting worse.

需求增加、过度放牧和气候变化共同导致开司米质下降。

In comparison, Oceania, with 13% of its farmland degraded, was predominantly affected by overgrazing, 11.3%.

相比之下，大洋洲 13% 农田退化，要受到过度放牧影响，为 11.3%。

That can lead to destructive overgrazing.

这可能导致破坏性过度放牧。

Sharks limit the abundance of animals which would otherwise overgraze these essential plants.

鲨鱼限制了动物数，这些动物会过度放牧这些重要植物。

Unfortunately, the ranchers overgrazed their land, leading to widespread starvation of their herds in the decade that followed.

不幸是，牧场过度放牧他土地，导致他牛群在接下来十年里普遍挨饿。

The urchin keep the otter healthy and fed, and the otter eating the urchin keeps the kelp from being overgrazed.

海胆维系着海獭健康与食物供给，而海獭捕食海胆防止了海藻被过度啃食。

This contrasts with Oceania and North America, where overgrazing and overcultivation were more prevalent causes of degradation.

替代医疗加入流治疗吗。

Europe, which experienced the highest overall percentage of land degradation at 23%, also faced challenges from overcultivation, 7.7%, and overgrazing, 5.5%.

欧洲土地退化总体百分比最高，为 23%，但也面临着过度耕作 （7.7%） 和过度放牧 （5.5%） 挑战。

Therefore, loss of topsoil from overgrazing, over-cultivation, or bad livestock management in areas neighbouring deserts will contribute to the continuing expansion of those arid regions.

因此，在邻近沙漠地区，过度放牧、过度耕作或糟糕牲畜管理导致表土流失，将导致这些干旱地区持续扩张。

North America had a relatively lower incidence of degraded land at 5%, with overcultivation, 3.3%, and overgrazing, 1.5%, being the main causes.

北美土地退化发生率相对较低，为 5%，其中过度耕种 （3.3%） 和过度放牧 （1.5%） 是要原因。

There was also increasing soil erosion in the area, which they said was threatening Petra from overgrazing livestock and uprooting trees for firewood.

该地区土壤侵蚀也在加剧，他表示这威胁到了佩特拉， 因为过度放牧牲畜和砍伐树木作为燃料。

None of the departments had set rules for conduct in the park, so hunters killed park wildlife, cattle overgrazed fields, and visitors vandalized landmarks.

没有一个部门制定了公园内行为规，因此猎人杀死了公园内野生动物，牛群过度放牧，游客破坏了地标。

The phenomenon was first described in a pamphlet by economist William Forster Lloyd in 1833 in a discussion of the overgrazing of cattle on village common areas.

这种现象最初由经济学家威廉·福斯特·洛伊德于1833年在一本小册子中描述，当时他在讨论村庄公共区域上牛群过度放牧问题。

Decades of overgrazing, climate change-induced droughts, and poor farming practices are stripping not only the Sudanian grasslands of their once fertile topsoil but hundreds of other regions like it across the world.

几十年过度放牧、气候变化引发干旱和不良耕作方式，不仅使苏丹草原失去了曾经肥沃表土，也使世界上其他数百个类似地区失去了表土。

Hardin argued that these situations pit short-term self-interest against the common good, and they end badly for everyone, resulting in overgrazing, overfishing, overpopulation, pollution, and other social and environmental problems.

哈丁认为，这些情形将短期个人利益与公共利益对立起来，最终对所有人都不利，导致过度放牧、过度捕捞、人口过剩、污染以及其他社会和环境问题。