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Impacts Of Different Vegetations On A Cambisols Properties In The Mid-Yunnan Plateau During Normal And Extreme Dry Years | 10336
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Quantification of soil quality changes following occurrence of climate extremes by measuring soil attributes beneath different
vegetations, which are important to sustainable management of soil conservation. In this study, We investigated the impacts
of different vegetations on surface soil properties during normal (2007-2008) and dry (2011-2012) years. The experiment site,
established in a degraded Aci Pup Udic Cambisols of the mid-Yunnan plateau(25?242093N, 101?28
′
18
′′
E), China, contained
three vegetation types, including one exotic, secondary planted
Eucalyptus smithii
plantation (EP), and two native vegetation:
Pinus yunnanensis
plantation (PP) and natural secondary forest of
Keteleeria evelyniana
and
Cyclobalanopsis glaucoides
(NSF).
The influence of communities was pronounced in surface soil, where surface soil C concentrations beneath nature communities
were significantly higher than that beneath artificial plantations in both normal and dry year. The highest soil C loss was occurred
under EP, average surface soil C concentrations in 2011-2012 were only 76% of soil C concentrations in 2007-2008. The apparent
decrease in soil pH also observed in the two artificial plantations, where soil pH decreased from 4.53 (EP) and 4.41 (PP) in
2007-2008 to 4.02 and 4.27 respectively. However, the soil C and pH under NSF was stable in the two comparable periods. Soil
C and pH showed a significant seasonal pattern beneath all communities with the hollow in dry seasons in both 2007-2008 and
2011-2012. These results implicates that soil properties should be more stable under nature vegetation at climate extremes than
artificial plantations.
Biography
Guosheng Zhang initially worked as a soil scientist in Gansu Agricultural University, and joined the Yunnan University in 2006 and undertakes
research in the soil health protection of mid Yunnan Plateau. Over the last 10 years, he published more than 30 refereed journal papers across a wide
range of research areas in crop agronomy, tillage management and soil conservation. He is leading and involved in a number of research projects,
including international collaborative projects
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