Laycock DH and Wood RA (1963) Some observations on soil moisture use under tea in Nysaland. II. The effect of shade trees. Trop Agric 40:42–48 Google Scholar Leite J de O (1972) Medida de densidade de sombreamento em cacausais com base em fotografias aéreas. In: Proc. IV Int...
塑料乱扔造成白色污染等等 The factory frequently to the rivers emissions sewage, creates the water pollution.On mountain trees are felled the light, creates the soil erosion.The exhaust gas discharge, creates the greenhouse effect.The plastics throw cause white pollution and so on[translate]...
Deforestation can have a catastrophic effect on the soil in areas where it is carried out extensively. Deforestation leads to increased soil erosion and also means that depletion of the nutrients contained within the soil can occur. This means that, not only has the original forest been destroyed...
For thousands of years, terracing has been one of the most important systems for preventing soil erosion, conserving water, and increasing agricultural production. Despite having a long history, the wide-ranging effects and mechanisms of terracing are poorly understood owing to large-scale spatial ...
Steep cropland with a slope over than 25掳 reaches 1.73 millon hm\\+2 in the upper reaches of the Yangtze River,and is the major resource of soil erosion i... ZG Liu,KW Pan - 《Resources & Enuironment in the Yangtza Basin》 被引量: 13发表: 2001年 Analysis of Advantages and Disa...
What is one disadvantage of using gas hydrates? How might irrigation harm soil and soil organisms? What effect does biodiversity have on a forest? What are the benefits of the Amazon rainforest? Why are plant roots important to prevent erosion?
Does crop rotation prevent soil erosion? What are the advantages and disadvantages of renewable energy sources? What are disadvantages of the food chain? What are the problems faced by using groundwater for agriculture? How does shifting cultivation alter the landscape? How does monoculture cause soi...
aNOTES ON CONTRIBUTORS NOTES ON CONTRIBUTORS[translate] aterminal block 接线盒[translate] a河流上游破坏植被使水土流失严重,河流下游河床泥沙淤积4.河流中游围湖造田,湖泊面积缩小,调蓄径流的能力降低。 Upstream the rivers destroys the vegetation to cause the soil erosion to be serious, the rivers downstre...
Terracing requires huge inputs of labor to construct and maintain, and when not properly maintained, the effects can be catastrophic. Unmaintained terraces can lead to mudslides, the creation of deep gulleys and increased soil erosion, particularly in sandy soils or on extremely steep terrains. Te...
due to soil erosion and other types of degradation since 1960. The loss rate of arable lands continues at about 25 million acres per year. This has a negative effect on local economies. When land can no longer be farmed, people move on to more productive land, which may also be degraded...