نتایج جستجو برای: nonexchangeable soil

تعداد نتایج: 180841  

2012
Qi Deng Dafeng Hui Deqiang Zhang Guoyi Zhou Juxiu Liu Shizhong Liu Guowei Chu Jiong Li

BACKGROUND The aim of this study was to determine response patterns and mechanisms of soil respiration to precipitation increases in subtropical regions. METHODOLOGY/PRINCIPAL FINDINGS Field plots in three typical forests [i.e. pine forest (PF), broadleaf forest (BF), and pine and broadleaf mixed forest (MF)] in subtropical China were exposed under either Double Precipitation (DP) treatment o...

2010
Mário Cunha Isabel Pôças André R. S. Marçal Arlete Rodrigues L. S. Pereira

Ancestral semi-natural meadows, locally called “Lameiros”, are an essential element of the mountain landscapes in Northern Portugal. These meadows are frequently located in areas of high water availability, loamy soils and over 700-800m hight. In association with these meadows can be found traditional irrigation systems, in which the water is applied all year around, to assure the crop water re...

Journal: :Annali dell'Istituto superiore di sanita 2008
Damiano Centioli Rob N J Comans Stefania Gaudino Chiara Galas Maria Belli

In recent years, the importance of trace metal mobile fractions rather than total contents in environmental matrices is increasing in risk assessment evaluation of contaminated sites. In this study different leaching/extraction tests, aimed at the measurements of mobile fractions of trace metals and standardized at European Committee for Standardization (CEN) for the characterization of waste, ...

2014
F. Renou-Wilson

Introduction Conclusions References

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