defoliation

简明释义

英[diːˌfəʊliˈeɪʃn]美[diːˌfoʊliˈeɪʃn]

n. 落叶，去叶；[植] 脱叶

英英释义

单词用法

同义词

反义词

例句

1.The result indicated that defoliation and different light intensities could change the pattern of biomass partitioning of plants.

结果表明：光照条件不同和叶损失程度不同都会导致植物物质分配方式的变化。

2.Year in and year out on the hoof, the defoliation returns a root, 1 layer contain 1 layer, covering up finally in oneself the defoliation of the whole life.

一年又一年地活着，落叶归根，一层有一层，最后埋在自己一生的落叶里。

3.Decomposition of forest defoliation and role of soil animals in Xiao Hinggan Mountains.

小兴安岭森林落叶分解与土壤动物的作用。

4.I like the recession of autumn, can satisfy oneself to see the sorrow of defoliation once.

我喜欢秋天的萧条，能满足一下自己看到落叶的悲伤。

5.The change of storage nutrition substance in Seriphidium transilien's roots, such as soluble proteins, soluble sugar, deoxidizing sugar and starch, were studied under various defoliation intensities.

以新疆蒿类半灌木荒漠草地建群种伊犁绢蒿为材料，探讨刈割强度对其根系贮藏营养物质的影响。

6.Climatic change affects the plant in the land with sprout, leaf, bloom and defoliation, have caused grave effects on ecological balance.

时空上水热分布的变化影响了陆地植物的发芽、展叶、开花、落叶等物候现象出现的时间，对已有的生态平衡造成了严重的影响。

7.Potted Ficus ginseng was used to study the effects of different postharvest temperature on the changes of defoliation and stress-resistant physiology during storage and transportation.

以盆栽榕树为试验材料，探讨不同贮运温度对盆栽榕树落叶及抗性生理的变化。

8.Perhaps love, just like the defoliation, see fly in the fall!

或许爱情，就像落叶，看似飞翔却在坠落！

9.The sudden change in temperature caused widespread defoliation in the trees, leaving them bare for the winter.

温度的突然变化导致树木普遍发生落叶，使它们在冬天变得光秃。

10.Farmers are concerned about the defoliation of their crops due to the infestation of pests.

农民们担心由于害虫的侵扰，作物会发生落叶。

11.The military used chemical agents that resulted in significant defoliation during the war.

军方在战争中使用化学剂，导致了显著的落叶。

12.A study showed that climate change is accelerating the defoliation of certain tree species.

一项研究表明，气候变化正在加速某些树种的落叶。

13.The park was closed for a few weeks due to the extensive defoliation caused by a severe storm.

由于严重风暴造成的广泛落叶，公园关闭了几周。

作文

Defoliation is a term that refers to the loss of leaves from a plant, which can occur naturally or as a result of environmental factors. In nature, trees and plants may shed their leaves in response to seasonal changes, particularly in autumn when temperatures drop and daylight decreases. This process is essential for the survival of many deciduous species, allowing them to conserve energy and water during the harsher winter months. However, human activities can also lead to unintended or harmful defoliation (脱叶现象), affecting ecosystems and agriculture alike. One of the most significant causes of human-induced defoliation (脱叶现象) is deforestation, which involves the large-scale removal of trees and vegetation for timber, agriculture, or urban development. This practice not only destroys habitats for countless species but also disrupts the carbon cycle, contributing to climate change. When trees are cut down, the stored carbon is released back into the atmosphere, exacerbating global warming. Furthermore, the loss of foliage means that fewer plants are available to absorb carbon dioxide, creating a vicious cycle that threatens the health of our planet. Agricultural practices can also lead to defoliation (脱叶现象). Farmers often use pesticides and herbicides to control pests and weeds, but these chemicals can have unintended consequences. For instance, the overuse of certain pesticides can lead to the destruction of beneficial insects and the surrounding plant life, resulting in a decline in crop health. Additionally, monoculture farming—growing a single crop over a wide area—can deplete soil nutrients and lead to increased vulnerability to disease, further promoting defoliation (脱叶现象) of crops. Sustainable farming practices, such as crop rotation and organic farming, can help mitigate these effects by fostering biodiversity and maintaining healthy ecosystems. In urban areas, defoliation (脱叶现象) can occur as a result of pollution and climate change. Air pollutants can damage plant tissues, leading to leaf drop and reduced photosynthesis. Moreover, rising temperatures and changing precipitation patterns can stress urban vegetation, causing premature leaf loss. Cities that prioritize green spaces and urban forestry can help combat these issues, providing essential benefits such as improved air quality, reduced heat islands, and enhanced biodiversity. In conclusion, defoliation (脱叶现象) is a complex phenomenon that can arise from both natural and anthropogenic factors. While it plays a vital role in the life cycles of many plants, the increasing rates of human-induced defoliation (脱叶现象) pose significant threats to our ecosystems and agricultural systems. To protect our environment, it is crucial to adopt sustainable practices in forestry, agriculture, and urban planning. By understanding the implications of defoliation (脱叶现象) and taking action to reduce its negative impacts, we can work towards a healthier planet for future generations.

脱叶现象是一个指植物失去叶子的术语，这种现象可以自然发生，也可以由于环境因素引起。在自然界中，树木和植物可能会在季节变化的情况下脱落叶子，特别是在秋季，当气温下降和日照减少时。这一过程对许多落叶植物的生存至关重要，使它们能够在严酷的冬季月份中节约能量和水分。然而，人类活动也可能导致意外或有害的脱叶现象，影响生态系统和农业。 人类引起的脱叶现象最重要的原因之一是森林砍伐，这涉及到大规模移除树木和植被以获取木材、农业或城市开发。这一做法不仅摧毁了无数物种的栖息地，还破坏了碳循环，助长了气候变化。当树木被砍伐时，储存的碳会释放回大气中，加剧全球变暖。此外，叶子的丧失意味着可供吸收二氧化碳的植物减少，从而形成一个威胁我们星球健康的恶性循环。 农业实践也可能导致脱叶现象。农民经常使用杀虫剂和除草剂来控制害虫和杂草，但这些化学物质可能会产生意想不到的后果。例如，某些杀虫剂的过度使用可能导致有益昆虫和周围植物生命的破坏，导致作物健康的下降。此外，单一作物种植——在广泛区域内种植单一作物——可能会耗尽土壤养分并增加对疾病的脆弱性，进一步促进作物的脱叶现象。可持续农业实践，如轮作和有机农业，可以通过促进生物多样性和维持健康生态系统来帮助减轻这些影响。 在城市地区，脱叶现象可能由于污染和气候变化而发生。空气污染物可能会损害植物组织，导致叶子脱落和光合作用减少。此外，气温上升和降水模式变化可能会给城市植被带来压力，导致过早的叶子丧失。优先考虑绿地和城市林业的城市可以帮助应对这些问题，提供诸如改善空气质量、减少热岛效应和增强生物多样性等重要好处。 总之，脱叶现象是一个复杂的现象，既可以由自然因素引起，也可以由人类因素引起。虽然它在许多植物的生命周期中发挥着重要作用，但日益增加的人为脱叶现象的速度对我们的生态系统和农业系统构成了重大威胁。为了保护我们的环境，采取可持续的林业、农业和城市规划实践至关重要。通过理解脱叶现象的影响并采取行动减少其负面影响，我们可以为未来的世代创造一个更健康的星球。