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Effects of apple branch biochar on soil C mineralization and nutrient cycling under two levels of N
Li Shuailin1,2; Liang Chutao1,2; Shangguan Zhouping1
2017-07
Source PublicationScience of The Total Environment
Volume607-608Issue:2017Pages:109-119
Abstract

The incorporation of biochar into soil has been proposed as a strategy for enhancing soil fertility and crop productivity. However, there is limited information regarding the responses of soil respiration and the C, N and P cycles to the addition of apple branch biochar at different rates to soil with different levels of N. A 108-day incubation experiment was conducted to investigate the effects of the rate of biochar addition (0, 1, 2 and 4% by mass) on soil respiration and nutrients and the activities of enzymes involved in C, N and P cycling under two levels of N. Our results showed that the application of apple branch biochar at rates of 2% and 4% increased the C-mineralization rate, while biochar amendment at 1% decreased the C-mineralization rate, regardless of the N level. The soil organic C and microbial biomass C and P contents increased as the rate of biochar addition was increased to 2%. The biochar had negative effects on β-glucosidase, N-acetyl-β-glucosaminidase and urease activity in N-poor soil but exerted a positive effect on all of these factors in N-rich soil. Alkaline phosphatase activity increased with an increase in the rate of biochar addition, but the available P contents after all biochar addition treatments were lower than those obtained in the treatments without biochar. Biochar application at rates of 2% and 4% reduced the soil nitrate content, particularly in N-rich soil. Thus, apple branch biochar has the potential to sequester C and improve soil fertility, but the responses of soil C mineralization and nutrient cycling depend on the rate of addition and soil N levels.
 

MOST Discipline Catalogue理学::生态学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8812
Collection水保所知识产出(1956---)
Corresponding AuthorShangguan Zhouping
Affiliation1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources
2.University of Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li Shuailin,Liang Chutao,Shangguan Zhouping. Effects of apple branch biochar on soil C mineralization and nutrient cycling under two levels of N[J]. Science of The Total Environment,2017,607-608(2017):109-119.
APA Li Shuailin,Liang Chutao,&Shangguan Zhouping.(2017).Effects of apple branch biochar on soil C mineralization and nutrient cycling under two levels of N.Science of The Total Environment,607-608(2017),109-119.
MLA Li Shuailin,et al."Effects of apple branch biochar on soil C mineralization and nutrient cycling under two levels of N".Science of The Total Environment 607-608.2017(2017):109-119.
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