Four specific activities have been identified as major contributors to the desertification processes: overcultivation, overgrazing, firewood gathering, and overirrigation.
导致沙漠化的主要因素有四个：过度种植、过度放牧、过度砍伐、过度灌溉。
Increase in pastureland and subsequent overgrazing have resulted in an expansion of savanna.
草场的增加和随之而来的过度放牧导致了稀树草原的扩张。
A way to reduce the damage from overgrazing is to move animals from one field to another.
减少过度放牧的危害的方法是将动物从一片土地迁移到另外一个。
Each herdsman captures all the benefit from an extra animal but the cost of overgrazing is borne by all.
对每个牧民来说，多放牧一头牲口带来的好处都归自己所有，而过度放牧的成本则有所有牧民一起承担。
Widespread overgrazing disturbs water cycles, reducing replenishment of above and below ground water resources.
大面积过度放牧扰乱了水循环、减少了地表和地下水资源的补充。
Grazing land is scarce while overgrazing causes soil erosion.
放牧的草场越来越少而过度放牧引起土壤的流失。
Article 12. Grasslands shall be used rationally and overgrazing prevented.
第十二条合理使用草原，防止过量放牧。
Vast regions of grasslands on the Great Plains were depleted by overgrazing.
大平原上的大片草原由于过分放牧而逐渐荒芜。
The grasslands are dying out, as decades of warming temperatures-exacerbated by overgrazing-turn prairie into desert.
几十年来，气候变暖使得绿地消失殆尽，过度放牧又加剧了草原的沙漠化。
Most dust storms are linked to long droughts, exacerbated by human activities like overgrazing and deforestation.
大部分的沙尘暴都源于长期干旱，并由于诸如过度放牧和伐木等人类活动而更加恶化。
Wasteland caused by rats is the secondary bare land of grassland on which vegetation is damaged by rodent movement and overgrazing.
鼠荒地主要是因鼠类活动和超载过牧等原因引起草原严重退化的次生裸地。
The elk kept rebounding and overgrazing key habitats, creating a perpetually unnatural situation for a park intended to preserve nature.
但麋鹿数量不断反弹，对主要栖息地过度啃食，让一个本来以保护自然为目的的公园成了一个完全不自然的场所。
The vegetation and soils in most of the arid and semiarid zones have been degraded, usually by overgrazing and the removal of plant cover by fire or the axe.
大多数干燥和半干燥地带的植被和土壤严重退化，其原因通常是过度放牧及滥砍滥伐和火灾。
At the same time herds cause wide-scale land degradation, with about 20 percent of pastures considered as degraded through overgrazing, compaction and erosion.
畜群同时造成大范围土地退化，其中20%的牧场因过度放牧、土壤板结和侵蚀而退化。
The serious situation was caused by loss of in-situ sites, deterioration of ecological environment, invasion of foreign species, overgrazing and frequent cutting, etc.
指出广西野生稻自然资源濒危现状严重主要是由于原生地消失、原生地环境质量恶化、外来物种入侵、过度放牧与频繁刈割等原因造成。
Four specific activities have been identified as major contributors to the desertification processes: overcultivation, overgrazing, firewood gathering, and over irrigation.
导致沙漠化的主要因素有四个：过度种植，过度放牧，过分砍伐，过度灌溉。
Climate change and overgrazing have had negative impacts on pastoralist communities in central Asia, writes Ronnie Vernooy. But co-management schemes point towards a solution.
罗尼·魏努力指出，气候变化和过度放牧给亚洲腹地的游牧社区造成了严重的负面影响，然而共同管理方案是一条解决之道。
While they are strong enough to have survived thousands of years on earth, they are so fragile in the face of earthquakes, global warming, deforestation, overgrazing as well as natural erosions.
历经千年的洗礼，在面对地震、气候变暖、森林砍伐、过度放牧等自然或人为的变迁时，它们依旧脆弱不堪。
Wild plants and habitats are disappearing due to urbanization, tourism activities, overgrazing, expansion of agricultural land, and lack of attention to natural heritage and ecosystem services.
城市化、旅游活动、过度放牧、农业用地的扩张以及缺乏对自然遗产和生态系统服务的意识都是导致野生植物与栖息地的消失的重要原因。
Livestock farming also accounts for a lot of carbon dioxide, mostly from forests being cut down for pasture, or when overgrazing and the resulting soil erosion causes a net loss of carbon from soils.
砍伐森林建牧场，以及过度放牧导致土壤中碳含量的净流失等因素都会产生大量的二氧化碳。
Overgrazing is the main reason of grassland degradation in Dan County;
过牧是达日县草地退化的主要原因；
Overgrazing by the enormous population of rabbits now menaces the island's agriculture.
大量兔子导致的过度放牧现在威胁着岛上的农业。
Overgrazing was found to be another important contributing factor in grassland degradation in China.
过度放牧是造成中国草地生态系统破坏的重要原因。
Overgrazing induced the biomass reduction and soil deterioration, resulting in the decline of Ruoergai Plateau wetland ecosystem service value and service capacity.
过度的放牧行为致使若尔盖高原湿地生物量减少、土壤结构变化，造成生态系统总服务价值和服务水平下降。
Overgrazing induced the biomass reduction and soil deterioration, resulting in the decline of Ruoergai Plateau wetland ecosystem service value and service capacity.
过度的放牧行为致使若尔盖高原湿地生物量减少、土壤结构变化，造成生态系统总服务价值和服务水平下降。
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