Characteristics of soil pH and exchangeable acidity in red soil profile under different vegetation types

The characteristics of soil pH and exchangeable acidity in soil profile under different vegetation types were studied in hilly red soil regions of southern Hunan Province, China. The soil samples from red soil profiles within 0-100 cm depth at fertilized plots and unfertilized plots were collected a...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 26; no. 9; p. 2639
Main Authors Ji, Gang, Xu, Ming-gang, Wen, Shi-lin, Wang, Bo-ren, Zhang, Lu, Liu, Li-sheng
Format Journal Article
LanguageChinese
Published China 01.09.2015
Subjects
Arachis
Camellia sinensis
China
Citrus
Fagaceae
Forests
Grassland
Hamamelidaceae
Hydrogen-Ion Concentration
Pinus
Poaceae
Soil - chemistry
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Summary:The characteristics of soil pH and exchangeable acidity in soil profile under different vegetation types were studied in hilly red soil regions of southern Hunan Province, China. The soil samples from red soil profiles within 0-100 cm depth at fertilized plots and unfertilized plots were collected and analyzed to understand the profile distribution of soil pH and exchangeable acidity. The results showed that, pH in 0-60 cm soil from the fertilized plots decreased as the following sequence: citrus orchard > Arachis hypogaea field > tea garden. As for exchangeable acidity content, the sequence was A. hypogaea field ≤ citrus orchard < tea garden. After tea tree and A. hypogaea were planted for long time, acidification occurred in surface soil (0-40 cm), compared with the deep soil (60-100 cm), and soil pH decreased by 0.55 and 0.17 respectively, but such changes did not occur in citrus orchard. Soil pH in 0-40 cm soil from the natural recovery vegetation unfertilized plots decreased as the following sequence: Im
ISSN:1001-9332