Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Research of Soil and Water Conservation》 2004-01
Add to Favorite Get Latest Update

Hydrological and Physical Characteristics of Forest Soil at Mountain Valley in Southwest of Hunan and Its Headwater Conservation Capacity

WU Jian-ping~1,YUAN Zheng-ke~1,YUAN Tong-zhi~2(1.Hunan Academy of Foresty, Changsha 410004, Hunan, China;2.Forestry Bureau of Tongdao County,Hunan, China)  
By combining the observation of soil profile at field with the chemical and physical analysis in laboratory, 21 samples of soil profile and structure from different forest communities were investigated and analyzed, which to study their headwater conservation and soil fertility. The results showed that the air moisture content in the forest was high and the coefficient (K=1.8) was more than 1.5. The proportion of destroyed soil structure at broad-leaved tree communities was 6.1%, which was 12.8% less than that of the conifer tree community (18.9%). The average solid soil contents was 1.01 g/cm~3, and the total porosity percent was 62.05% averagely, capillary pore percent was 50.72%, non-capillary pore percent 11.72%. Soil aeration was 28.83%. The variation parameters of different eigenvalue of soil moisture content were as following: available moisture contentmoisture content at natural situationvariation range of available water content maximum moisture contentcapillary moisture content. The highest water storage capacity was 863.1 t/hm~2 averagely . Soils in the investigated forests contain high moisture, and umification procedure last long time. The organ matter content was up to 61.83 g/kg. So the soil characterized by its high fertility, good aeration, fine texture has high capacity of headwater conservation.
【Fund】: 国家科技攻关"长江中游湘南红壤岗丘水土保持植被建设技术研究与示范"项目部分内容。
【CateGory Index】: S715.7
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