首页 | 本学科首页   官方微博 | 高级检索  
     检索      


A model of savanna litter decomposition
Authors:PR Furniss  P Ferrar  JW Morris  JJ Bezuidenhout
Institution:University of the Witwatersrand, Johannesburg, South Africa;Department of Agriculture, Pretoria, South Africa;University of Pretoria, Pretoria, South Africa
Abstract:A model of litter decomposition in a South African savanna is described. Decomposing material is divided into a number of particle classes, distinguishing material of different ages, origins and size. Each particle class is further divided into a number of chemical constituents. Processes modelled include ageing, physical disintegration, consumption by termites and decay. Sources of fresh litter include tree and grass leaves. Results from a standard run of the model and a number of runs with changed parameter values to test the model's sensitivity to these are presented and discussed. From exercise of the model it appears that the most important processes relate to soil-feeding termites, with decay and physical breakdown being the background against which termites operate.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号