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Alteration of soil carbon and nitrogen pools and enzyme activities as affected by increased soil coarseness | |
Wang, Ruzhen; Lu, Linyou1; Creamer, Courtney A.; Dijkstra, Feike A.; Liu, Heyong; Feng, Xue; Yu, Guoqing1; Han, Xingguo4; Jiang, Yong | |
2017 | |
发表期刊 | BIOGEOSCIENCES |
ISSN | 1726-4170 |
卷号 | 14期号:8页码:2155-2166 |
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. |
学科领域 | Environmental Sciences & Ecology |
DOI | 10.1016/j.scitotenv.2017.07.133 |
收录类别 | SCI |
语种 | 英语 |
WOS关键词 | ALTERED PRECIPITATION REGIMES ; MICROBIAL BIOMASS CARBON ; ORGANIC-MATTER ; WATER ADDITION ; INNER-MONGOLIA ; CLIMATE-CHANGE ; PHOSPHORUS ; DESERTIFICATION ; STOICHIOMETRY ; LAND |
WOS记录号 | WOS:000410352900005 |
出版者 | COPERNICUS GESELLSCHAFT MBH |
文献子类 | Article |
出版地 | GOTTINGEN |
EISSN | 1726-4189 |
资助机构 | National Key Research and Development Program of China [2016YFC0500707] |
作者邮箱 | jiangyong@iae.ac.cn |
作品OA属性 | Green Published |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | 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.Chinese Acad Sci, Inst Appl Ecol, State Engn Lab Soil Nutrient Management, Shenyang 110016, Peoples R China 2.Liaoning Acad Agr Sci, Inst Sandy Land Improvement & Utilizat, Fuxing 123000, Peoples R China 3.Creamer, Courtney A.] US Geol Survey, 345 Middlefield Rd, Menlo Pk, CA 94025 USA 4.Dijkstra, Feike A.] Univ Sydney, Sch Life & Environm Sci, Ctr Carbon Water & Food, Sydney, NSW 2006, Australia 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, 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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