Soil fertility characteristics under different land use patterns in depressions between karst hills

Soil samples were collected from the depressions between karst hills by grid sampling method (5 m x 5 m), soil pH, soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), total potassium (TK), available nitrogen (AN), available phosphorus (AP), and available potassium (AK) in surface...

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Published inYing yong sheng tai xue bao Vol. 25; no. 6; p. 1561
Main Authors Liu, Yan, Song, Tong-Qing, Cai, De-Suo, Zeng, Fu-Ping, Peng, Wan-Xia, Du, Hu
Format Journal Article
LanguageChinese
Published China 01.06.2014
Subjects
Agriculture
Biomass
Carbon - analysis
Ecosystem
Nitrogen - analysis
Phosphorus - analysis
Potassium - analysis
Soil - chemistry
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Summary:Soil samples were collected from the depressions between karst hills by grid sampling method (5 m x 5 m), soil pH, soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), total potassium (TK), available nitrogen (AN), available phosphorus (AP), and available potassium (AK) in surface layer (0-20 cm) under different land use patterns (burning, cutting, cutting plus root removal, enclosure, maize plantation, and pasture plantation) were measured, the main factors of influencing the soil fertility was identified by principal component analysis (PCA), and the relationships between soil nutrients and microorganisms were demonstrated by canonical correlation analysis (CCA). The results showed that the soil was slightly alkaline (pH 7.83-7.98), and the soil fertility differed under the different land use patterns, with 76.78-116.05 g x kg(-1) of SOC, 4.29-6.23 g x kg(-1) of TN, 1.15-1.47 g x kg(-1) of TP, 3.59-6.05 g x kg(-1) of TK, 331.49-505.49 mg x kg(-1) of AN), 3.92-10.91 mg x kg(-1) of AP, and 1
ISSN:1001-9332