Wall DH (2012) Soil ecology and ecosystem services. Oxford University Press, Oxford
Wang C, Butterbach-Bahl K et al (2011) The effects of biomass removal and N additions on
microbial N transformations and biomass at different vegetation types in an old-field ecosystem
in northern China. Plant Soil 340:397–411
Wang Y, Chen H, Zhu Q et al (2014) Soil methane uptake by grasslands and forests in China. Soil
Biol Biochem 74:70–81
Wang C, Butterbach-Bahl K, He N et al (2015) Nitrogen addition and mowing affect microbial
nitrogen transformations in a C4 grassland in northern China. Eur J Soil Sci 66:485–495
Wang J, Wang L, Feng X et al (2016) Soil N transformations and its controlling factors in temperate
grasslands in China: a study from N-15 tracing experiment to literature synthesis. J Geophys
Res-Biogeo 121:2949–2959
Wang X, Xu Z, Lü X et al (2017) Responses of litter decomposition and nutrient release rate to
water and nitrogen addition differed among three plant species dominated in a semi-arid
grassland. Plant Soil 418:241–253
Wang F, Shi G, Nicholas O et al (2018) Ecosystem nitrogen retention is regulated by plant
community trait interactions with nutrient status in an alpine meadow. J Ecol 106:1570–1581
Wei C, Zheng H, Li Q et al (2012) Nitrogen addition regulates soil nematode community
composition through ammonium suppression. PLoS One 7:e43384
Wei C, Yu Q, Bai E et al (2013) Nitrogen deposition weakens plant-microbe interactions in
grassland ecosystems. Glob Chang Biol 19:3688–3697
Xia J, Wan S (2008) Global response patterns of terrestrial plant species to nitrogen addition. New
Phytol 179:428–439
Xu W, Luo X, Pan Y et al (2015) Quantifying atmospheric nitrogen deposition through a
nationwide monitoring network across China. Atmos Chem Phys 15:12345–12360
Xu Z, Ren H, Li M et al (2017) Experimentally increased water and nitrogen affect root production
and vertical allocation of an old-field grassland. Plant Soil 412:369–380
Yang Y, Ji C, Ma W et al (2012) Significant soil acidification across northern China’s grasslands
during 1980s–2000s. Glob Chang Biol 18:2292–2300
Yang Y, Fang J, Ji C et al (2014) Stoichiometric shifts in surface soils over broad geographical
scales: evidence from China’s grasslands. Glob Ecol Biogeogr 23:947–955
Yang Z, Hautier Y, Borer E et al (2015) Abundance- and functional-based mechanisms of plant
diversity loss with fertilization in the presence and absence of herbivores. Oecologia
179:261–270
Yang S, Xu Z, Wang R et al (2017) Variations in soil microbial community composition and
enzymatic activities in response to increased N deposition and precipitation in Inner Mongolia
grassland. Appl Soil Ecol 119:275–285
Yang GJ, Lü XT, Stevens CJ et al (2019) Mowing mitigates the negative impacts of N addition on
plant species diversity. Oecolgia 189:769–779
Yao M, Rui J, Li J et al (2014) Rate-specific responses of prokaryotic diversity and structure to
nitrogen deposition in the Leymus chinensis steppe. Soil Biol Biochem 79:81–90
You C, Wu F, Yang W et al (2018) Does foliar nutrient resorption regulate the coupled relationship
between nitrogen and phosphorus in plant leaves in response to nitrogen deposition? Sci Total
Environ 645:733–742
Yue P, Li K, Gong Y et al (2016) A five-year study of the impact of nitrogen addition on methane
uptake in alpine grassland. Sci Rep 6:32064
Zeng J, Liu X, Song L et al (2016) Nitrogen fertilization directly affects soil bacterial diversity and
indirectly affects bacterial community composition. Soil Biol Biochem 92:41–49
Zhang X, Wang Q, Gilliam F et al (2012) Effect of nitrogen fertilization on net nitrogen mineralization in a grassland soil, northern China. Grass Forage Sci 67:219–230
Zhang N, Guo R, Song P et al (2013a) Effects of warming and nitrogen deposition on the coupling
mechanism between soil nitrogen and phosphorus in Songnen meadow steppe, northeastern
China. Soil Biol Biochem 65:96–104
Zhang X, Chen Q, Han X (2013b) Soil bacterial communities respond to mowing and nutrient
addition in a steppe ecosystem. PLoS One 8:e84210
242
X. Lü et al.
Wang C, Butterbach-Bahl K et al (2011) The effects of biomass removal and N additions on
microbial N transformations and biomass at different vegetation types in an old-field ecosystem
in northern China. Plant Soil 340:397–411
Wang Y, Chen H, Zhu Q et al (2014) Soil methane uptake by grasslands and forests in China. Soil
Biol Biochem 74:70–81
Wang C, Butterbach-Bahl K, He N et al (2015) Nitrogen addition and mowing affect microbial
nitrogen transformations in a C4 grassland in northern China. Eur J Soil Sci 66:485–495
Wang J, Wang L, Feng X et al (2016) Soil N transformations and its controlling factors in temperate
grasslands in China: a study from N-15 tracing experiment to literature synthesis. J Geophys
Res-Biogeo 121:2949–2959
Wang X, Xu Z, Lü X et al (2017) Responses of litter decomposition and nutrient release rate to
water and nitrogen addition differed among three plant species dominated in a semi-arid
grassland. Plant Soil 418:241–253
Wang F, Shi G, Nicholas O et al (2018) Ecosystem nitrogen retention is regulated by plant
community trait interactions with nutrient status in an alpine meadow. J Ecol 106:1570–1581
Wei C, Zheng H, Li Q et al (2012) Nitrogen addition regulates soil nematode community
composition through ammonium suppression. PLoS One 7:e43384
Wei C, Yu Q, Bai E et al (2013) Nitrogen deposition weakens plant-microbe interactions in
grassland ecosystems. Glob Chang Biol 19:3688–3697
Xia J, Wan S (2008) Global response patterns of terrestrial plant species to nitrogen addition. New
Phytol 179:428–439
Xu W, Luo X, Pan Y et al (2015) Quantifying atmospheric nitrogen deposition through a
nationwide monitoring network across China. Atmos Chem Phys 15:12345–12360
Xu Z, Ren H, Li M et al (2017) Experimentally increased water and nitrogen affect root production
and vertical allocation of an old-field grassland. Plant Soil 412:369–380
Yang Y, Ji C, Ma W et al (2012) Significant soil acidification across northern China’s grasslands
during 1980s–2000s. Glob Chang Biol 18:2292–2300
Yang Y, Fang J, Ji C et al (2014) Stoichiometric shifts in surface soils over broad geographical
scales: evidence from China’s grasslands. Glob Ecol Biogeogr 23:947–955
Yang Z, Hautier Y, Borer E et al (2015) Abundance- and functional-based mechanisms of plant
diversity loss with fertilization in the presence and absence of herbivores. Oecologia
179:261–270
Yang S, Xu Z, Wang R et al (2017) Variations in soil microbial community composition and
enzymatic activities in response to increased N deposition and precipitation in Inner Mongolia
grassland. Appl Soil Ecol 119:275–285
Yang GJ, Lü XT, Stevens CJ et al (2019) Mowing mitigates the negative impacts of N addition on
plant species diversity. Oecolgia 189:769–779
Yao M, Rui J, Li J et al (2014) Rate-specific responses of prokaryotic diversity and structure to
nitrogen deposition in the Leymus chinensis steppe. Soil Biol Biochem 79:81–90
You C, Wu F, Yang W et al (2018) Does foliar nutrient resorption regulate the coupled relationship
between nitrogen and phosphorus in plant leaves in response to nitrogen deposition? Sci Total
Environ 645:733–742
Yue P, Li K, Gong Y et al (2016) A five-year study of the impact of nitrogen addition on methane
uptake in alpine grassland. Sci Rep 6:32064
Zeng J, Liu X, Song L et al (2016) Nitrogen fertilization directly affects soil bacterial diversity and
indirectly affects bacterial community composition. Soil Biol Biochem 92:41–49
Zhang X, Wang Q, Gilliam F et al (2012) Effect of nitrogen fertilization on net nitrogen mineralization in a grassland soil, northern China. Grass Forage Sci 67:219–230
Zhang N, Guo R, Song P et al (2013a) Effects of warming and nitrogen deposition on the coupling
mechanism between soil nitrogen and phosphorus in Songnen meadow steppe, northeastern
China. Soil Biol Biochem 65:96–104
Zhang X, Chen Q, Han X (2013b) Soil bacterial communities respond to mowing and nutrient
addition in a steppe ecosystem. PLoS One 8:e84210
242
X. Lü et al.