Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Resources and Environment in the Yangtze Basin》 1992-01
Add to Favorite Get Latest Update

SOIL AND WATER LOSS AND ITS CONTROL IN THE YANGTZE RIVER BASIN

Shi Deming (Institute of Soil Science,Academia Sinica,Nanjing,210008)  
Soil and water loss is a serieus problem in the Yangtze Basin,It not only bringabout many-sided harm to soil,land and water resources,but also seriously hindersthe development of agriculture,forestry,animal husbandry and future Three Gorgeproject.As a result of the destruction exceed harnessing,from 1950's to now,both area and amount of soil and water loss are increased to some extent.The to-tal area of eroded region has been increased from 363800km~2 to 562000km~2 and the am-ount of soil loss has been raised from 1300 million to 1568 million tons.Coarse textureof eroded materials,small delivery ratio,heavy sedimentation in th upper and middlereaches and serious gravitational erosion(slide,debris flow)are the erosion characte-ristics of the Yangtze River reaches.Therefore,the soil and water loss have more greatdamages to the upper and middle reaches of the Yangtze river.Gravitational erosioncan produce more bed loads.Once they enter the reservoir region,they have formed aserious threat to the Three Gorge Engineering project.According to the soil erosioncharacteristics and soil erosion development condition in the Yangtze River Basin thispaper suggested some countermeasures and practices for controlling soil and Water los-ses.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved