点源和非点源的源头e Pollution

Key Difference – Point Source vs Nonpoint Source Pollution

人类和其他生物体与环境for their survival. Organisms interact with each other for different aspects. Air, water, and soil fulfill requirements of all living organisms.生态系统run with a proper balance between biological, physical and chemical components. However, due to anthropogenic activities and natural phenomena, the environment is contaminated with various substances. Pollution can be defined as the presence of a substance in air, water, or land which has adverse effects on living organisms and on the environment. There are three major types of pollution: air pollution, soil pollution, and water pollution. Sources of air, water and soil pollution should be identified in order to prevent or minimize pollution which can be a threat to public health and hygiene. Sources can be categorized into two groups named point sources and nonpoint sources. Point source pollution occurs from a single identifiable source or point. Nonpoint source pollution occurs due to various unidentifiable causes. The key difference between point source and nonpoint source pollution is that点源污染的来源可以追溯到后退，而非点源污染不能追溯到单个特定源。

内容

1.Overview and Key Difference
2.What is Point Source Pollution
3.什么是非点源污染
4.Side by Side Comparison – Point Source vs Nonpoint Source Pollution in Tabular Form
5。概括

What is Point Source Pollution?

Point source pollution refers to the pollution which occurs due to a single identifiable source. This type of pollution remains localized to the point of pollution. Hence, it is easy to identify the source and take actions to prevent pollution. Point source pollution is concentrated near the place of origin. It can be small scale to large scale.

点源污染的一些例子包括将污水释放为水的污水管道，工厂的烟囱，漏油，将化学物质泄漏到河流等。这种类型的污染可能是偶然发生的，也可能是故意采取行动的结果。由于来源是单一的，可以识别的，因此小型社区行动足以防止点源污染。

什么是非点源污染?

非点源污染是指污染，即污染的来源不能追溯到单个来源。这种污染被广泛扩散和稀释。污染不集中在特定的位置或区域。因此，很难识别出来源并采取行动以最小化或预防。非点源污染是由于土地径流，雨水，排水，渗流，大气沉积，水文修饰等引起的。非点源污染的结果可以在水体，地球，海洋等中看到。

非点源污染可能是由于许多分布广泛的来源而发生的，或者由于空气和水的流动可能会传播。因此，非点污染通常是全球明智的。

点源和非点源污染之间有什么区别？

Point Source vs Nonpoint Source Pollution
点源污染是由于特定源引起的。	Nonpoint source pollution is not caused due to a single specific source.
Diffusion
Point source pollution is localized into the point of pollution.	非点源污染被广泛扩散。
易于控制
Point source pollution is easy to control since the source is identifiable.	Nonpoint source pollution is not easy to control since the sources are unidentifiable.
Level of Dilution
点源污染集中在污染的来源周围。	Nonpoint source pollution is more diluted than point source pollution.
Preventive Actions
可以通过在单个社区中采取行动来阻止点源污染。	Nonpoint source pollution is often tackled through global action.

摘要 - 点源与非点源污染

Pollution is a serious issue in the world, which has a negative effect on animals, plants, and humans and lead to global problems such as climate change and global warming. Measures should be taken to prevent pollution and safe guard the public health, animal and plant lives and the environment. In order to minimize pollution, sources of the pollution should be traced out. Point sources and nonpoint sources of pollution are two types. Point source pollution is a result of a single source or identifiable source and it is easy to identify the source and prevent pollution. Nonpoint source pollution has several different unidentifiable sources, so it is difficult to trace back the sources into a single source and prevent pollution. This is the difference between point source and nonpoint source pollution.

下载点源的PDF版本与非点源污染

You can download PDF version of this article and use it for offline purposes as per citation notes. Please download PDF version here点源和非点源的源头e Pollution.

Reference:

1.“什么是非点源？”EPA。环境保护局，2017年5月2日。Available here。2017年7月31日。

Image Courtesy:

1. NOAA国家海洋服务部的“佛罗里达州的非点源污染”（CC由2.0）viaFlickr
2. Alfred T. Palmer的“ Alfedpalmersmokestacks” - 国会图书馆电话号码LC-USW36-376，复制号LC-DIG-FSAC-FSAC-1A35072（公共领域）Commons Wikimedia