Soil erosion - Wikipedia
网页Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, and animals (including humans).
The Causes and Effects of Soil Erosion, and How to Prevent It
网页2020年2月7日 · Soil erosion is agriculture’s enemy: a major environmental threat to sustainability and productivity with knock-on effects on the climate crisis and food security. This is particularly true for places with the highest risk of erosion, such as watersheds in Indonesia, India, the Philippines and more. In these areas, protecting against soil ...
Erosion 101: Everything You Need to Know About Soil Erosion - NRDC
网页2021年6月1日 · Soil erosion refers to the erosion of the top layer of dirt known as topsoil, the fertile material vital to life. The rate of soil erosion depends on many factors,...
What Is Soil Erosion? - Definition, Causes, Effects, Prevention
网页Soil erosion is a continuous process that occurs either slowly or at an alarming rate. It results in a continuous loss of topsoil, ecological degradation, soil collapse, etc. Let us have a detailed look at the causes, effects and prevention of soil erosion.
What is Erosion? Effects of Soil Erosion and Land Degradation
网页The effects of soil erosion go beyond the loss of fertile land. It has led to increased pollution and sedimentation in streams and rivers, clogging these waterways and causing declines in fish and other species. And degraded lands are also often less able to hold onto water, which can worsen flooding.
Erosion - National Geographic Society
网页2024年4月23日 · Liquid water is the major agent of erosion on Earth. Rain, rivers, floods, lakes, and the ocean carry away bits of soil and sand and slowly wash away the sediment. Rainfall produces four types of soil erosion: splash …
Soil - Erosion, Conservation, Management | Britannica
网页2024年8月16日 · Soil erosion and deposition are natural geomorphic processes that give shape to landforms and provide new parent material for the development of soil profiles. These processes become soil conservation issues when the rate of erosion greatly exceeds the rate expected in the absence of human land use—a situation referred to …
Erosion | Description, Causes, Facts, & Types | Britannica
网页2024年9月7日 · erosion, removal of surface material from Earth’s crust, primarily soil and rock debris, and the transportation of the eroded materials by natural agencies (such as water or wind) from the point of removal. The broadest application of the term erosion embraces the general wearing down and molding of all landforms on Earth’s surface ...
Countries and the global rate of soil erosion - Nature
网页2019年12月2日 · Soil erosion is a major threat to food security and ecosystem viability, as current rates are orders of magnitude higher than natural soil formation. Governments around the world are trying to...
Soil Erosion: Factors, Processes and Effects | SpringerLink
网页2022年8月26日 · Erosion directly reduces crop production by reducing soil depth and root-plant depth, loss of soil minerals and organic matter, reducing water holding capacity of the soil, reducing seed germination, and finally reducing the agricultural land area.