Nevertheless, rill erosion caused widespread damage to vulnerable, recently seeded fields, unprotected by vegetation. A reconnaisance survey of 195 fields in the Forfar area of Angus revealed that erosion was particularly severe in bare soil ploughed in a downslope direction; 58 per cent of fields...
Soil erosionSoil erosion is when the soil is blown away by the wind or washed away by the rain. Soilerosion is common in areas with steep slopes (斜坡), where trees have been cut down, indroughts when crops and other vegetation (植被) grows poorly and in rural areas which areoverpopulat...
the latter brought about by man’s activities. Geological erosion proceeds slowly, and soil productivity is not decreased. Accelerated erosion is caused by man’s economic activities, namely, improper tillage and irrigation, the destruction of the plant cover by grazing livestock, logging, and constr...
Soil erosion is the movement and transport of soil by various agents, leading to land degradation and the loss of topsoil. It is a global threat that can be caused by natural processes and human activities, such as agriculture and irrigation. ...
By 2025, China aims to improve its institutional mechanism and system for the conservation of soil and water, enhance management efficiency, and effectively control soil erosion caused by human activities in key regions, with 73 percent of the nation's territory being without soil erosion by that...
A. Soil erosion. B. Loss of biodiversity. C. Desertification. D. Flooding. 相关知识点: 试题来源: 解析 B。解析:文章中说“Deforestation is also a major concern as it leads to loss of biodiversity and disrupts the ecological balance.”,所以答案是 B。反馈...
Application of RUSLE Model on Global Soil Erosion Estimate Soil erosion is one of the most serious environmental problems commonly in over the world, which is caused by both natural and human factors. It is possibl... TN Pham,D Yang,S Kanae,... - 《Doboku Gakkai Ronbunshuu B》 被引...
What is erosion(腐蚀)? Erosion is simply when soil is transported on the earth's surface fromone location to another by a natural cause.This is easy to imagine. Picture a sandcastle on a beach. This sandcastle is particularlybeautiful, the work of a whole long, hot summer aftermoon. It...
28.D.考查作者意图.根据" However, to our eyes, it has disappeared. This is also the way with erosion. Parts of the earth seem to disappear but have really just been moved around"可知,此处第二段描述的目的是来解释侵蚀是什么.故选D.29.D.考查细节理解.根据" Eventually, the hole underneath ...
Purpose Artificial soil erosion caused by engineering practices is becoming increasingly severe worldwide. However, little is known about the change of soil structure of new reconstructed purple soil after erosion in the hilly areas of Southwest China. This study aims to analyze the effects of erosio...