Water-dominated negative effects of nitrogen enrichment on soil respiration in a temperate steppe

被引：6

作者：

Li, Kunyu ^{[1
]}

Niu, Mengnan ^{[1
]}

Bai, Wenming ^{[2
]}

Yang, Zhongling ^{[1
]}

Li, Guoyong ^{[1
]}

机构：

[1] Henan Univ, Sch Life Sci, Int Joint Res Lab Global Change Ecol, Kaifeng 475004, Peoples R China

[2] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China

来源：

APPLIED SOIL ECOLOGY | 2021年 / 165卷

基金：

中国国家自然科学基金;

关键词：

Global change; Nitrogen deposition; Nonlinear response; Soil carbon flux; Soil moisture; Temperate grassland; CARBON STORAGE; DEPOSITION; RESPONSES; FLUXES; FERTILIZATION; BIODIVERSITY; ECOSYSTEMS; GRASSLAND; MICROBES; BIOMASS;

D O I：

10.1016/j.apsoil.2021.104023

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Soil respiration (SR) has been demonstrated to be affected by nitrogen (N) enrichment. However, most studies examine the effect of N enrichment on SR using only two levels of N treatments (i.e. control vs N enrichment). Current understanding of SR responses to varying rates of N enrichment remains unclear. A field manipulative experiment with eight levels of N addition (0, 1, 2, 4, 8, 16, 32, 64 g N m(-2) yr(-1)) was performed to examine SR responses to N enrichment rates in a temperate steppe of northern China. A nonlinear decrease in SR along N addition gradient was observed in the temperate steppe. N addition decreased SR mainly through reducing soil moisture in this study. These findings facilitate accurate estimation of soil C flux in the scenario of intensified N enrichment.

引用

页数：5

共 30 条

[1] INCREASES IN TERRESTRIAL CARBON STORAGE FROM THE LAST GLACIAL MAXIMUM TO THE PRESENT [J].

ADAMS, JM ;

FAURE, H ;

FAUREDENARD, L ;

MCGLADE, JM ;

WOODWARD, FI .

NATURE, 1990, 348 (6303) :711-714

[2] Greenhouse gas fluxes under drought and nitrogen addition in a Southern California grassland [J].

Aronson, Emma L. ;

Goulden, Michael L. ;

Allison, Steven D. .

SOIL BIOLOGY & BIOCHEMISTRY, 2019, 131 :19-27

[3] Tradeoffs and thresholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: evidence from inner Mongolia Grasslands [J].

Bai, Yongfei ;

Wu, Jianguo ;

Clark, Christopher M. ;

Naeem, Shahid ;

Pan, Qingmin ;

Huang, Jianhui ;

Zhang, Lixia ;

Han, Xingguo .

GLOBAL CHANGE BIOLOGY, 2010, 16 (01) :358-372

[4] Soil acidification exerts a greater control on soil respiration than soil nitrogen availability in grasslands subjected to long-term nitrogen enrichment [J].

Chen, Dima ;

Li, Jianjun ;

Lan, Zhichun ;

Hu, Shuijin ;

Bai, Yongfei .

FUNCTIONAL ECOLOGY, 2016, 30 (04) :658-669

[5] The response of soil CO2 flux to changes in atmospheric CO2, nitrogen supply and plant diversity [J].

Craine, JM ;

Wedin, DA ;

Reich, PB .

GLOBAL CHANGE BIOLOGY, 2001, 7 (08) :947-953

[6] Soil carbon sequestration in prairie grasslands increased by chronic nitrogen addition [J].

Fornara, Dario A. ;

Tilman, David .

ECOLOGY, 2012, 93 (09) :2030-2036

[7] Transformation of the nitrogen cycle: Recent trends, questions, and potential solutions [J].

Galloway, James N. ;

Townsend, Alan R. ;

Erisman, Jan Willem ;

Bekunda, Mateete ;

Cai, Zucong ;

Freney, John R. ;

Martinelli, Luiz A. ;

Seitzinger, Sybil P. ;

Sutton, Mark A. .

SCIENCE, 2008, 320 (5878) :889-892

[8] Long-term antagonistic effect of increased precipitation and nitrogen addition on soil respiration in a semiarid steppe [J].

Han, Hongyan ;

Du, Yue ;

Hui, Dafeng ;

Jiang, Lin ;

Zhong, Mingxing ;

Wan, Shiqiang .

ECOLOGY AND EVOLUTION, 2017, 7 (24) :10804-10814

[9] Temperature and biomass influences on interannual changes in CO2 exchange in an alpine meadow on the Qinghai-Tibetan Plateau [J].

Kato, Tomomichi ;

Tang, Yanhong ;

Gu, Song ;

Hirota, Mitsuru ;

Du, Mingyuan ;

Li, Yingnian ;

Zhao, Xinquan .

GLOBAL CHANGE BIOLOGY, 2006, 12 (07) :1285-1298

[10] Long-Term Nitrogen Addition Does Not Increase Soil Carbon Storage or Cycling Across Eight Temperate Forest and Grassland Sites on a Sandy Outwash Plain [J].

Kazanski, Clare E. ;

Riggs, Charlotte E. ;

Reich, Peter B. ;

Hobbie, Sarah E. .

ECOSYSTEMS, 2019, 22 (07) :1592-1605

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