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	Soil indicators for eco-geographic regionalization: A case study in mid-temperate zone of eastern China
	Zheng D.
	2009
关键词	eco-geographic zone soil indicators mid-temperate zone of eastern China attributes quality prediction
英文摘要	Eco-geographic regional system is formed by division or combination of natural features based on geographic relativity and comparison of major ecosystem factors (including biological and non-biological) and geographic zonality. In previous studies, soil types were often taken as a basis for soil regionalization. However, the quantitative characteristics of soil indicators are fitter than the qualitative ones of soil types for modern regionalization researches. Based on the second China's national soil survey data and the provincial soil resource information, by principal analysis and discriminant analysis, this paper discusses the appropriate soil indicators as the complement of eco-geographic region indicator systems and the relationships between these soil indicators and soil types in regionalization. The results show that five indicators are used in eco-geographic zonality in mid-temperate zone of eastern China which are organic matter content, cation exchange capacity, pH, clay content and bulk density in topsoils. With a regression-kriging approach, the maps of soil indicators in mid-temperate zone of eastern China are compiled with a resolution of 1 km in every grid and the indicative meanings of these soil indicators are discussed. By cluster analysis it is proved that these soil indicators are better than the soil types and soil regionalization in delineating eco-geographic regions.
出处	Journal of Geographical Sciences
卷	19
期	2
页	200-212
收录类别	SCI
语种	英语
ISSN号	1009-637X
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/23402]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Zheng D.. Soil indicators for eco-geographic regionalization: A case study in mid-temperate zone of eastern China. 2009.

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