Role of Lichens in Weathering and Soil-Forming Pro-cesses in Fildes Peninsula, AntarcticEnglish Full Text
HEN JIE and GONG Zi-TONG(Institute of Soil Science, Academia Sinica, Nanjing 210008)(China)( )
Abstract: Lichens play an unparalleledly vital role in weathering and soil-forming processes in Antarctic region. Inthis study some related chemical components and micromorphological analyses have been carried out on thesamples of the weathered rocks and the lichens grown on them from Fildes Peninsula, Antarctic. The resultsindicated that the major chemical components in the bioweathering surface layer of the sampled rocks havebeen obviously altered and the weathering potential in this layer has greatly decreased by an average rangearound 4.66 percent in 4 samples. In the weathering surface layer ferruginmation of some minerals in varyingdegrees was seen by means of microscopic examination through the thin section of the weathered rocks, andits products proved to be dominated by hematite, limonite, goethite and free iron oxides Meanwhile, thestudy suggested that the dissolntion and absorption of lichens by their secretion accelerated the process ofcalcitization of minerals in the bicaweathering surface layer. Eventually, the results aIso show that differentspeciesof lichens play different roles in weathering and soilforming processes.
- Series：
(D) Agriculture
- Subject：
Fundamental Science of Agriculture; Agronomy
- Classification Code：
S154
- Mobile Reading
Read on your phone instantly
Step 1Scan QR Codes
"Mobile CNKI-CNKI Express" App
Step 2Open“CNKI Express”
and click the scan icon in the upper left corner of the homepage.
Step 3
Scan QR Codes
Read this article on your phone.
- CAJ Download
- PDF Download
Download the mobile appuse the app to scan this coderead the article.
Tips: Please download CAJViewer to view CAJ format full text.
Download: 18 Pagecount: 10 Size: 390k
Citation Network
Related Literature
- Similar Article
- Reader Recommendation
- Associated Author