overgrazing

简明释义

英[ˌəʊvəˈɡreɪzɪŋ]美[ˌovərˈɡrez]

n. 过度放牧

v. 过度放牧（overgraze 的现在分词）

英英释义

单词用法

同义词

反义词

例句

1.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。

2.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；

3.Overfishing or overgrazing (the "tragedy of the Commons") will result.

过度捕捞和过度放牧(悲剧的共同体)将会是结果。

4.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。

5.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。

6.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。

7.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。

8.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。

9.Farmers are educated about the dangers of overgrazing through community workshops.

农民通过社区研讨会了解过度放牧的危害。

10.Wildlife populations are declining because of overgrazing by domestic livestock.

由于家畜的过度放牧，野生动物种群正在减少。

11.The farmers in the region are facing severe soil erosion due to overgrazing.

该地区的农民因过度放牧而面临严重的土壤侵蚀。

12.To combat overgrazing, many ranchers are adopting rotational grazing practices.

为了应对过度放牧，许多牧场主正在采用轮牧方法。

13.The government has implemented policies to reduce overgrazing in protected areas.

政府已实施政策以减少保护区内的过度放牧。

作文

Overgrazing is a term that refers to the excessive grazing of vegetation by livestock, which can lead to significant ecological consequences. This phenomenon occurs when animals graze on land for longer periods than it can sustain. The impacts of overgrazing are profound and can affect both the environment and agricultural productivity. When livestock consume more grass than the ecosystem can regenerate, it leads to soil degradation, loss of plant diversity, and ultimately desertification. One of the primary consequences of overgrazing is soil erosion. Without adequate vegetation cover, the soil becomes exposed to wind and water erosion, which can wash away topsoil, the most fertile layer of the earth. This loss of topsoil significantly reduces the land's agricultural productivity, making it difficult for farmers to grow crops and sustain their livelihoods. Moreover, as the soil erodes, it can lead to sedimentation in rivers and streams, affecting aquatic ecosystems and water quality.In addition to soil erosion, overgrazing can also result in a decline in biodiversity. Healthy ecosystems rely on a variety of plant species to thrive. However, when livestock continuously graze on specific plants, it disrupts the natural balance of the ecosystem. Some species may become extinct, while others may dominate the landscape, leading to monocultures that lack resilience against pests and diseases. This decline in biodiversity can have ripple effects throughout the food chain, impacting not just plants but also the animals that depend on them for survival.Furthermore, overgrazing contributes to the problem of climate change. When vegetation is removed, carbon stored in plants and soil is released into the atmosphere as carbon dioxide, a greenhouse gas that contributes to global warming. Additionally, degraded land is less capable of sequestering carbon, creating a vicious cycle that exacerbates climate change. Addressing overgrazing is crucial for mitigating these environmental challenges.To combat the effects of overgrazing, sustainable grazing practices must be implemented. This includes rotational grazing, where livestock are moved between pastures to allow grasslands time to recover. By giving the land a break, it can regenerate and maintain its health. Additionally, educating farmers about the importance of maintaining biodiversity and soil health can lead to more sustainable agricultural practices. Governments and organizations can also play a role by providing support and resources to promote sustainable land management.In conclusion, overgrazing is a significant environmental issue that poses threats to soil health, biodiversity, and climate stability. It is essential to recognize the importance of sustainable grazing practices to protect our ecosystems and ensure the long-term viability of agriculture. By taking proactive measures, we can mitigate the impacts of overgrazing and work towards a healthier planet for future generations.

过度放牧是一个术语，指的是牲畜对植被的过度放牧，这可能导致显著的生态后果。这种现象发生在动物在土地上放牧的时间超过了其可持续的时间。过度放牧的影响深远，可能影响环境和农业生产力。当牲畜消耗的草超过生态系统能够再生的量时，就会导致土壤退化、植物多样性的丧失，最终导致沙漠化。过度放牧的主要后果之一是土壤侵蚀。没有足够的植被覆盖，土壤就会暴露在风和水的侵蚀下，这可能冲走表层土壤，表层土壤是地球上最肥沃的层次。这种表层土壤的流失显著降低了土地的农业生产力，使农民难以种植作物并维持生计。此外，随着土壤的侵蚀，它可能导致河流和溪流中的沉积，影响水生生态系统和水质。除了土壤侵蚀，过度放牧还会导致生物多样性的下降。健康的生态系统依赖于多种植物物种的繁荣。然而，当牲畜不断放牧特定植物时，它会破坏生态系统的自然平衡。一些物种可能会灭绝，而另一些物种可能会主导景观，导致缺乏弹性的单一栽培，这对害虫和疾病的抵抗力不足。这种生物多样性的下降可能会对食物链产生连锁反应，影响不仅是植物，还有依赖它们生存的动物。此外，过度放牧还助长了气候变化的问题。当植被被移除时，储存在植物和土壤中的碳会作为二氧化碳释放到大气中，这是一种温室气体，助长全球变暖。此外，退化的土地更难以固碳，形成了加剧气候变化的恶性循环。解决过度放牧问题对减轻这些环境挑战至关重要。为了应对过度放牧的影响，必须实施可持续的放牧实践。这包括轮换放牧，即将牲畜在不同的牧场之间移动，以便让草原有时间恢复。通过给土地休息的机会，它可以再生并保持健康。此外，教育农民了解维护生物多样性和土壤健康的重要性，可以促使更可持续的农业实践。政府和组织也可以通过提供支持和资源来促进可持续的土地管理。总之，过度放牧是一个重大环境问题，对土壤健康、生物多样性和气候稳定构成威胁。认识到可持续放牧实践的重要性对于保护我们的生态系统和确保农业的长期可行性至关重要。通过采取积极措施，我们可以减轻过度放牧的影响，并为未来几代人创造一个更健康的星球。