Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Acta Geographica Sinica》 2009-07
Add to Favorite Get Latest Update

Distribution of Soil Active Organic Carbon of Alpine Grassland on Qinghai-Tibet Plateau

WANG Jianlin1,Ouyang Hua2,WANG Zhonghong1,CHANG Tianjun1,LI Peng1,SHEN Zhenxi2,ZHONG Zhiming2(1.Plant Sci-Tech Department of Tibet Agricultural and Animal Husbandry College,Nyingchi 860000,China;2.Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China)  
Based on the data from 36 sampling points,we analyzed the distribution of soil active organic carbon(SAOC) of alpine grassland on the Qinghai-Tibet Plateau.The results are shown as follows.(1) In the horizontal direction,the SAOC was significantly different between grassland types and natural transects.In general,its content appeared high in southeast and low in northwest with an overall plaque-like distribution pattern.The high-SAOC areas are mainly in the hinterland of the northern plateau and the Himalayan north basin area.(2) In the vertical direction,the SAOC distribution of 0-40 cm sections of different grassland types and different natural areas could be divided into descending type,ascending type and lower-higher-lower type.There were significant differences between the SAOC contents of the 0-10 cm layers and the 30-40 cm layers.(3) Using the regression model-based standard coefficient method,we analyzed the impact of climatic factors on the SAOC content of alpine grassland,indicating that the precipitation contributed more than the temperature in the alpine grassland SAOC.
【Fund】: 国家自然科学基金项目(40661007)~~
【CateGory Index】: S812.2
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