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| Fundamental Problems to be Solved in Research on Soil-environmental Criteria/standards |
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| KeyWord:soil; soil-environmental criteria; remediation criteria; methodological problem; environmental standard; ecological safety |
| Author Name | Affiliation | | ZHOU Qi-xing | Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria， College of Environmental Science and Engineering， Nankai University， Tianjin 300071， China | | TENG Yong | Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria， College of Environmental Science and Engineering， Nankai University， Tianjin 300071， China | | ZHAN Si-hui | Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria， College of Environmental Science and Engineering， Nankai University， Tianjin 300071， China | | TONG Ling | Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria， College of Environmental Science and Engineering， Nankai University， Tianjin 300071， China |
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| Abstract: |
| Research on soil-environmental criteria/standards is a complex systems engineering， involving in many fundamental problems. To understand and solve these fundamental problems is the requisite and premise whether soil-environmental criteria/standards are scientific and accurate or not， and can be fully applied at the national level. In this review， these fundamental problems including relevant basic concepts of soil-environmental criteria/standards and their connotations， standardization of basic analytical and measuring methods， correct selection of biological receptors， and normalization of various data and variables were firstly expounded， thus providing with the thought， theory， method and technology basis for comprehensive and systematical study on soil-environmental criteria/standards. Concretely speaking， the relevant concepts including "environmental quality"， "soil-environmental quality"， "soil quality"， "soil pollution"， "contaminated soil"， "soil-environmental quality standard"， and "remediation standards for contaminated soils"， the unity and standardization of sample-collecting， pretreatment， analytical procedures and experimental methods， the correct selection of sensitive and dominant species as biological receptors， as well as the normalization of basic data and many variables including total amount and bioavailable or extracted forms of toxic pollutants， and their combined pollution and interaction， some influences of soil intrinsic factors （soil types， organic matter， clay， pH， Eh and CEC， etc）， and some external factors affecting soil environment （geographical area， temperature， water or moisture， fertilizer application or agricultural measures， etc）， are the most challenging fundamental problems of soil-environmental criteria/standards researches. Finally， combined with these fundamental problems， the future study on soil environmental criteria/standards are prospected. |
