Study on the Soil Enzyme Activities of High Phosphorus Region in Xiangxi River Watershed

Abstract:

The rich phosphorus resources in Xiangxi river watershed had a serious impact on water quality of Xiangxi River. The phosphate ore region distributed in this area was selected as studying area, and the activities of different soil enzymes in 0-20cm and 20-40cm soil layers in mining zone (MZ), transportation zone (TZ) and hydro-fluctuation zone (HFZ) were respectively measured. Meanwhile, the differences of enzymes in the two soil layers between different regions were analyzed. The main results were as follows: The activity of soil polyphenol oxidase decreased in the order of MZ> TZ > HFZ, while the activities of soil catalase, sucrase, urease and alkaline phosphatase were higher in TZ and lower in MZ; Except the activity of soil invertase, the activities of other enzymes in 20-40 cm soil layer were mainly higher than those in 0-20 cm soil layer; The activities of soil enzymes in different regions of XXR watershed had significant differences with each other and were mainly correlated with soil pH, OM and TN; Soil enzymes such as catalase, polyphenol oxidase, invertase, urease and alkaline phosphatase are sensitive to the environmental conditions around the soil, and they could be used as effective indicators reflecting the soil quality in mineral regions.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 1073-1077
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.1073
• Online since: March 2015
• Authors: Gang Zhi Peng, Jian Xia Xu, Jian Zhu Wang*, Heng Xie, Lei Li
• Keywords: Phosphate Ore Region, Phosphorus Pollution, Soil Enzyme Activities, Xiangxi River

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