savanna

简明释义

英[səˈvænə]美[səˈvænə]

n. [生态] 热带草原；热带的稀树大草原

复 数 s a v a n n a s

英英释义

单词用法

同义词

反义词

例句

1.We are, after all, only creatures of the African savanna, programmed to uncover trends in the natural world.

我们终归只是来自非洲草原的生物，有计划的掩盖着自然界的发展趋势。

2.South of the equatorial region is the tree-dotted grassland called the savanna.

赤道以南是树木点缀的草原，称为热带稀树草原。

3.There is generally little doubt that fire is a significant factor in maintaining savanna, certainly in most regions.

火灾是维持稀树草原的一个重要因素，在大多数地区都是如此，（人们）对此通常很少有疑问。

4.Overlooking the zebra antelope roam free on the private balcony, and take in the views of the 33-acre savanna.

在私家阳台上俯瞰斑马羚羊自由漫步，33英亩的热带草原风光尽收眼底。

5.An adult male lion is resting in the grass on the Kenyan savanna.

肯尼亚热带草原上，一头成年雄狮正在草丛里休息。

6.The herders shifted south, following the major river systems into savanna regions.

牧民们向南迁移，沿着主要河流系统进入热带草原地区。

7.In "Secrets of the Savanna" they issued a strong call for human population control in Africa.

在《稀树大草原的秘密》一书中，他们发出了非洲应当控制人口的强烈呼唤。

8.In these areas, rainfall per month exceeds that in the above definition, so other factors must contribute to savanna formation.

在这些地区，每个月的降雨量超过了上述定义中的量，所以一定有其他因素促成草原的形成。

9.In many characteristics, savanna soils are similar to those of some rain forests, though more extreme.

稀树草原的土壤与一些热带雨林的土壤有许多相似的特征，尽管会更极端。

10.Lions often hunt in the tall grasses of the savanna.

狮子常常在热带草原的高草中捕猎。

11.The savanna ecosystem supports a diverse range of wildlife.

热带草原生态系统支持着多样的野生动物。

12.Many species of birds migrate to the savanna during the dry season.

许多鸟类在旱季迁徙到热带草原。

13.The African elephant roams freely across the vast savanna.

非洲大象在广阔的热带草原上自由漫游。

14.The savanna is characterized by its open grasslands and scattered trees.

热带草原的特点是开阔的草地和零星的树木。

作文

The term savanna refers to a unique ecosystem characterized by a mix of grasslands and scattered trees, primarily found in regions with a tropical or subtropical climate. This environment is crucial for various species of wildlife and plays an important role in the ecological balance of our planet. In this essay, I will explore the characteristics, significance, and threats faced by savanna ecosystems.Firstly, savanna landscapes are typically marked by their distinct vegetation. The grasses dominate the ground cover, while trees are spaced apart, allowing sunlight to reach the soil. This arrangement creates a habitat that supports a diverse range of flora and fauna. Many animals, such as elephants, giraffes, and lions, thrive in these areas due to the availability of food and water. The seasonal rains contribute to the growth of grasses, which in turn sustains herbivores and their predators. Thus, the savanna serves as a vital habitat for numerous species, making it an essential part of global biodiversity.Secondly, the savanna plays a significant role in the livelihoods of many communities. In several parts of Africa and South America, indigenous people rely on the resources provided by these ecosystems. They often practice traditional farming and hunting, which have been sustainable for generations. Moreover, savanna regions attract tourists from around the world, eager to experience the beauty of the wildlife and landscapes. This tourism can provide economic benefits and encourage conservation efforts, highlighting the importance of protecting these environments.However, despite their ecological and economic significance, savanna ecosystems face numerous threats. One major concern is deforestation. As populations grow, forests are cleared for agriculture and urban development, leading to habitat loss for many species. Additionally, climate change poses a significant risk, altering rainfall patterns and increasing the frequency of droughts. These changes can affect the delicate balance of the savanna, making it challenging for both wildlife and human communities to adapt.Conservation efforts are essential to protect savanna ecosystems and the biodiversity they support. Establishing protected areas and national parks can help preserve these landscapes from exploitation. Furthermore, engaging local communities in conservation initiatives ensures that they benefit from protecting their environment. Education and awareness programs can also play a critical role in promoting sustainable practices and reducing the impact of human activities on the savanna.In conclusion, the savanna is a remarkable ecosystem that offers numerous benefits to both wildlife and human populations. Its unique characteristics and rich biodiversity make it an essential part of our planet's health. However, the threats it faces cannot be ignored. By understanding the importance of the savanna and taking action to protect it, we can ensure that future generations will continue to enjoy its wonders. It is our responsibility to safeguard these incredible environments, not just for the sake of the species that inhabit them, but for the well-being of our entire planet.

术语savanna指的是一种独特的生态系统，其特点是草原和零星树木的混合，主要分布在热带或亚热带气候的地区。这种环境对各种野生动物至关重要，并在我们星球的生态平衡中发挥重要作用。在这篇文章中，我将探讨savanna生态系统的特征、重要性和面临的威胁。首先，savanna景观通常以其独特的植被为标志。草类植物主导着地面覆盖，而树木则分散开来，允许阳光照射到土壤。这种排列创造了一个支持多样化动植物的栖息地。许多动物，如大象、长颈鹿和狮子，正是因为食物和水源的可得性而在这些地区繁衍生息。季节性降雨促进了草类的生长，从而维持了食草动物及其捕食者。因此，savanna作为众多物种的重要栖息地，使其成为全球生物多样性的核心部分。其次，savanna在许多社区的生计中发挥着重要作用。在非洲和南美的多个地区，土著人民依赖这些生态系统提供的资源。他们通常从事传统农业和狩猎，这些活动在几代人中一直是可持续的。此外，savanna地区吸引着来自世界各地的游客，他们渴望体验野生动物和风景的美丽。这种旅游业可以带来经济利益并鼓励保护工作，突显了保护这些环境的重要性。然而，尽管savanna生态系统具有生态和经济的重要性，但它们面临着许多威胁。其中一个主要问题是森林砍伐。随着人口的增长，森林被清除用于农业和城市发展，导致许多物种的栖息地丧失。此外，气候变化也构成了重大风险，改变了降雨模式并增加了干旱的频率。这些变化可能影响savanna的微妙平衡，使野生动物和人类社区都难以适应。保护工作对保护savanna生态系统及其支持的生物多样性至关重要。建立保护区和国家公园可以帮助保护这些景观免受开发的侵害。此外，吸引当地社区参与保护倡议确保他们能够从保护环境中获益。教育和意识提升项目也可以在推广可持续实践和减少人类活动对savanna影响方面发挥关键作用。总之，savanna是一种非凡的生态系统，为野生动物和人类社会提供了众多好处。其独特的特征和丰富的生物多样性使其成为我们星球健康的重要组成部分。然而，它面临的威胁不容忽视。通过理解savanna的重要性并采取行动保护它，我们可以确保未来的世代继续享受其奇观。保护这些令人惊叹的环境是我们的责任，不仅是为了栖息其中的物种，也是为了我们整个星球的福祉。