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Alteration of soil carbon and nitrogen pools and enzyme activities as affected by increased soil coarseness

文献类型：期刊论文

作者Wang, Ruzhen; Lu, Linyou5; Creamer, Courtney A.; Dijkstra, Feike A.; Liu, Heyong; Feng, Xue; Yu, Guoqing5; Han, Xingguo1; Jiang, Yong
刊名BIOGEOSCIENCES
出版日期2017
卷号14期号:8页码:2155-2166
ISSN号1726-4170
DOI10.1016/j.scitotenv.2017.07.133
文献子类Article
英文摘要Soil coarseness decreases ecosystem productivity, ecosystem carbon (C) and nitrogen (N) stocks, and soil nutrient contents in sandy grasslands subjected to desertification. To gain insight into changes in soil C and N pools, microbial biomass, and enzyme activities in response to soil coarseness, a field experiment was conducted by mixing native soil with river sand in different mass proportions: 0, 10, 30, 50, and 70% sand addition. Four years after establishing plots and 2 years after transplanting, soil organic C and total N concentrations decreased with increased soil coarseness down to 32.2 and 53.7% of concentrations in control plots, respectively. Soil microbial biomass C (MBC) and N (MBN) declined with soil coarseness down to 44.1 and 51.9 %, respectively, while microbial biomass phosphorus (MBP) increased by as much as 73.9 %. Soil coarseness significantly decreased the enzyme activities of beta-glucosidase, N-acetylglucosaminidase, and acid phosphomonoesterase by 20.2-57.5 %, 24.5-53.0 %, and 22.2-88.7 %, used for C, N and P cycling, respectively. However, observed values of soil organic C, dissolved organic C, total dissolved N, available P, MBC, MBN, and MBP were often significantly higher than would be predicted from dilution effects caused by the sand addition. Soil coarseness enhanced microbial C and N limitation relative to P, as indicated by the ratios of beta-glucosidase and N-acetyl-glucosaminidase to acid phosphomonoesterase (and MBC: MBP and MBN: MBP ratios). Enhanced microbial recycling of P might alleviate plant P limitation in nutrient-poor grassland ecosystems that are affected by soil coarseness. Soil coarseness is a critical parameter affecting soil C and N storage and increases in soil coarseness can enhance microbial C and N limitation relative to P, potentially posing a threat to plant productivity in sandy grasslands suffering from desertification.
学科主题Environmental Sciences & Ecology
出版地GOTTINGEN
电子版国际标准刊号1726-4189
WOS关键词ALTERED PRECIPITATION REGIMES ; MICROBIAL BIOMASS CARBON ; ORGANIC-MATTER ; WATER ADDITION ; INNER-MONGOLIA ; CLIMATE-CHANGE ; PHOSPHORUS ; DESERTIFICATION ; STOICHIOMETRY ; LAND
语种英语
WOS记录号WOS:000410352900005
出版者COPERNICUS GESELLSCHAFT MBH
资助机构National Key Research and Development Program of China [2016YFC0500707]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/22080]  
专题植被与环境变化国家重点实验室
作者单位1.Dijkstra, Feike A.] Univ Sydney, Sch Life & Environm Sci, Ctr Carbon Water & Food, Sydney, NSW 2006, Australia
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
3.Liaoning Acad Agr Sci, Inst Sandy Land Improvement & Utilizat, Fuxing 123000, Peoples R China
4.Creamer, Courtney A.] US Geol Survey, 345 Middlefield Rd, Menlo Pk, CA 94025 USA
5.Chinese Acad Sci, Inst Appl Ecol, State Engn Lab Soil Nutrient Management, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Ruzhen,Lu, Linyou,Creamer, Courtney A.,et al. Alteration of soil carbon and nitrogen pools and enzyme activities as affected by increased soil coarseness[J]. BIOGEOSCIENCES,2017,14(8):2155-2166.
APA Wang, Ruzhen.,Lu, Linyou.,Creamer, Courtney A..,Dijkstra, Feike A..,Liu, Heyong.,...&Jiang, Yong.(2017).Alteration of soil carbon and nitrogen pools and enzyme activities as affected by increased soil coarseness.BIOGEOSCIENCES,14(8),2155-2166.
MLA Wang, Ruzhen,et al."Alteration of soil carbon and nitrogen pools and enzyme activities as affected by increased soil coarseness".BIOGEOSCIENCES 14.8(2017):2155-2166.

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来源：植物研究所

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