| 澳大利亚、中国和泰国的热带地区的土壤化学退化的量化及修复 |
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| 引用本文： | A. D. NOBLE,P. MOODY,LIU Guo-Dao,S. RUAYSOONGNERN,QI Zhi-Ping,S. BERTHELSEN. 澳大利亚、中国和泰国的热带地区的土壤化学退化的量化及修复[J]. 土壤圈, 2003, 13(1): 31-39 |
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| 作者姓名： | A. D. NOBLE P. MOODY LIU Guo-Dao S. RUAYSOONGNERN QI Zhi-Ping S. BERTHELSEN |
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| 作者单位： | [1]CSIROLandandWater,DaviesLaboratory,PMBPOAitkenvale,QLD4814,（Australia [2]DepartmentofNaturalResoucesandMines,80MeiersRoad,Indooroopilly,QLD4068,（Australia） |
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| 基金项目： | *1Project financially supported by the Australian Centre for International Agricultural Research (ACIAR) and the Sugar Research and Development Corporation (SRDC), Australia. |
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| 摘 要： | Soil and land degradation in the tropics can be identified and described in terms of physical,chemical,and biological changes from its pristine state brought about by natural and anthropogenic influences.A characteristic of these ecosystems is their capacity to recycle nutrients through soil organic matter(SOM). Following disturbance through changed land management.SOM is rapidly mineralized and there is a cor responding decline in fertility and the variable charge component of the cation exchange capacity.As these ecosystems are strongly dependent on SOM for their functionality,changed land use can have irreversible impacts on the productivity of these systems.The paper focuses on quantifying chemical degradation throughbenchmaking using data from paried sites in tropical China and Thailand using surface charge finger printing.Using values taken from the fingerprint of an undistubed soil,an index of chemical degradation from ideality was calculated.Various management stratgeies that attempt to reverse degradative trends or improve poor quality soils in their natural condition are discussed.such as the ddition of natural clays and silicated materials.Results are present to whow the effect of each of the aforementional strategies on surface charge characteristics and associated increases in plant productivity.
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| 关 键 词： | 土地利用 土壤 土地退化 土壤肥力 有机物质 土壤生产力 |
Quantification and remediation of soil chemical degradation in tropical australia, China and Thailand |
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| A. D. NOBLE,P. MOODY,LIU Guo-Dao,S. RUAYSOONGNERN,QI Zhi-Ping and S. BERTHELSEN. Quantification and remediation of soil chemical degradation in tropical australia, China and Thailand[J]. Pedosphere, 2003, 13(1): 31-39 |
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| Authors: | A. D. NOBLE P. MOODY LIU Guo-Dao S. RUAYSOONGNERN QI Zhi-Ping S. BERTHELSEN |
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| Affiliation: | CSIRO Land and Water, Davies Laboratory, PMB PO Aitkenvale, QLD 4814 (Australia);Department of Natural Resources and Mines, 80 Meiers Road, Indooroopilly, QLD 4068 (Australia);Chinese Academy of Tropical Agricultural Sciences, Baodao Xincun, Danzhou, Hainan Province (China);Department of Land Resources and Environment, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002 (Thailand);Chinese Academy of Tropical Agricultural Sciences, Baodao Xincun, Danzhou, Hainan Province (China);CSIRO Land and Water, Davies Laboratory, PMB PO Aitkenvale, QLD 4814 (Australia) |
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| Abstract: | Soil and land degradation in the tropics can be identified and described in terms of physical,chemical,and biological changes from its pristine state brought about by natural and anthropogenic influences.A characteristic of these ecosystems is their capacity to recycle nutrients through soil organic matter(SOM). Following disturbance through changed land management.SOM is rapidly mineralized and there is a cor responding decline in fertility and the variable charge component of the cation exchange capacity.As these ecosystems are strongly dependent on SOM for their functionality,changed land use can have irreversible impacts on the productivity of these systems.The paper focuses on quantifying chemical degradation throughbenchmaking using data from paried sites in tropical China and Thailand using surface charge finger printing.Using values taken from the fingerprint of an undistubed soil,an index of chemical degradation from ideality was calculated.Various management stratgeies that attempt to reverse degradative trends or improve poor quality soils in their natural condition are discussed.such as the ddition of natural clays and silicated materials.Results are present to whow the effect of each of the aforementional strategies on surface charge characteristics and associated increases in plant productivity. |
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| Keywords: | degradation land use remediation soil |
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