Cited by Nitrogen addition and mowing had only weak interactive effects on macronutrients in plant-soil systems of a typical steppe in Inner Mongolia

Grasses mixture-planting rather than fertilization depresses soil microbial diversity in an alpine artificial grassland DOI

Jie Li,

Xin Jiang,

Xianhui Zhou

et al.

Plant and Soil, Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 22, 2023

Language: Английский

Citations

Nitrogen addition enhances nitrogen but not carbon mineralization in aggregate size fractions of soils in a Pinus massonia plantation DOI

Tian Chen,

Ruimei Cheng,

Wenfa Xiao

et al.

Frontiers in Forests and Global Change, Journal Year: 2024, Volume and Issue: 7

Published: March 22, 2024

Introduction Atmospheric nitrogen (N) deposition can impact the levels of soil organic carbon (SOC) and total (total N) by altering N availability. However, effect input on mineralization SOC in various aggregate size fractions requires further clarification. Methods The samples were collected from a Pinus massoniana plantation situated Three Gorges Reservoir Area China. Over period three years, soils subjected to four different addition (0 [N0], 30 [N30], 60 [N60], 90 [N90] kg ha −1 yr ). aggregates was evaluated through an incubation experiment, encompassing sizes (2000 − 8000, 1000 2000, 250 1000, < μm). Results μm fraction showed highest cumulative C mineralization, while lowest observed 2000 8000 fraction. Compared um fraction, drop 9 21% indicating that enhance stability soil. Cumulative consistently at their reducing mineralization-related loss. Adding forest led reduction mineralization. In contrast, opposite trend after adding microaggregates. Nitrification main contributor net increased response N30 N60. leads increase weight ratio Moreover, N90 linked decreases microbial biomass N. Discussion These findings confirm structural characteristics play crucial role sequestering sequestration presence deposition, highlighting loss caused input.

Language: Английский

Citations

Effects of nitrogen and water addition on soil carbon, nitrogen, phosphorus, sulfur, and their stoichiometry along soil profile in a semi-arid steppe DOI

Guoxiang Niu, Buqing Zhong, Ruzhen Wang

et al.

Journal of Soils and Sediments, Journal Year: 2023, Volume and Issue: 23(9), P. 3298 - 3309

Published: June 5, 2023

Abstract Purpose Although past studies have found well-constrained soil carbon (C)/nutrient ratios, the effects of increased nitrogen (N) and water inputs on these ratios across depths rarely been assessed in semi-arid grasslands. Methods In this study, we evaluated contents total C, N, phosphorus (P), sulfur (S), their stoichiometric a 0–80 cm profile following 13 years successive N (at rates 5 15 g m −2 yearr −1 ) addition (180 mm per growing season) grassland Mongolian Plateau. Results 0–10 layer, long-term tended to increase C but decreased P S compared control. The addition, as observed soil, however, were not consistent with that deep 10–80 layers. Water entire content only 0–40 soil. Moreover, combined generally had stronger four elements whole profile. For stoichiometry elements, low rate (5 year C:N P:S soils, high (15 produced opposite effect. Both resulted an C:P, C:S, N:P, N:S ratios. Similarly, plots received water, alone while caused higher fluctuations six elemental However, there was no pattern change any one ratio, independent when taking into account depths. Conclusion Our findings showed P, highly influenced by depth could be modulated increasing precipitation. These results need carefully considered managing ecological environment steppes.

Language: Английский

Citations

Effects of nutrient addition on the composition and chemical characteristics of soil dissolved organic matter in a desert steppe in northern China DOI

Bingqing Liu,

Rongjie Wu,

Bin Xue

et al.

Land Degradation and Development, Journal Year: 2023, Volume and Issue: 35(4), P. 1365 - 1380

Published: Nov. 27, 2023

Abstract Dissolved organic matter (DOM) plays a critical role in ecosystem function and productivity, particularly carbon (C) cycling grassland ecosystems. However, changes the structural complexity of DOM desert steppe following long‐term treatment with nitrogen (N) phosphorus (P) remain unclear; this limits our understanding nutrient‐related soil C cycle steppe. In present study, experiments were conducted 0–10 cm layer northern China from 2017 to 2021, four treatments established: P, N, N + P (NP), no nutrient addition (CK). The content chemical composition determined by ultraviolet–visible absorbance, fluorescence, Fourier transform infrared spectroscopy. Compared CK treatment, increased 2.86%–53.84%. NP average molecular weight, aromaticity, humification degree DOM. source was attributed combination foreign local sources. Fluorescent components samples mainly proteins humic acids; acid decreased after addition. Nutrient availability pH key factors affecting weight DOM, respectively. significantly positively correlated index ( r = 0.96). These results imply that accelerates accumulation influences its complexity; potentially benefits sequestration

Language: Английский

Citations

Nitrogen addition and mowing had only weak interactive effects on macronutrients in plant-soil systems of a typical steppe in Inner Mongolia DOI

Guoxiang Niu, Ruzhen Wang, Hao Zhou

et al.

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 347, P. 119121 - 119121

Published: Sept. 29, 2023

Language: Английский

Citations