Biogeochemistry, Journal Year: 2023, Volume and Issue: 162(1), P. 13 - 24
Published: Jan. 1, 2023
Language: Английский
Agriculture Ecosystems & Environment, Journal Year: 2023, Volume and Issue: 356, P. 108559 - 108559
Published: June 7, 2023
Language: Английский
Citations
17
Agriculture Ecosystems & Environment, Journal Year: 2023, Volume and Issue: 362, P. 108848 - 108848
Published: Dec. 20, 2023
Language: Английский
Citations
17
The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 920, P. 171006 - 171006
Published: Feb. 17, 2024
Language: Английский
Citations
8
Geoderma, Journal Year: 2024, Volume and Issue: 443, P. 116848 - 116848
Published: March 1, 2024
The positive effects of afforestation in karst rocky desertification areas are often limited by soil nitrogen (N) availability. However, how plant N limitation evolves response to prolonged as well the mechanisms underlying and availability poorly understood. In this study, leaves samples were collected from cropland, Dodonaea viscosa plantations 10, 20 40 years after their establishment on abandoned cropland a area. natural succession shrubland served control. Foliar N/phosphorus (P) stoichiometry was used evaluate limitation, concentration δ15N value foliar measured changes Soil transformation rates also determined, using 15N tracing technique elucidate mechanism inorganic community-level N/P ratio (13.5) lower than 14 following 10-y afforestation, indicating that growth is predominantly limited. With increased 14.0–15.5, suggesting decreased limitation. This could be attributed confirmed raises with afforestation. Compared D. supply capacity, stimulating organic mineralization, heterotrophic nitrification release adsorbed ammonium, more obviously ammonium correlated significantly positively concentration, ratio, δ15N, larger alleviates effect can increases matter content, bacterial fungal abundances structure improvement all which facilitate mineralization nitrification. still exists, monoculture may need adapted maximize alleviate areas.
Language: Английский
Citations
7
The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 171963 - 171963
Published: March 26, 2024
Language: Английский
Citations
7
Journal of soil science and plant nutrition, Journal Year: 2022, Volume and Issue: 22(3), P. 3130 - 3156
Published: May 19, 2022
Abstract Reactive nitrogen (N) plays a pivotal role in supplying N to plants and soil microbes, but it has negative environmental impacts through influencing the quality of water air, which turn influences human health. Thus, there is an urgent necessity maximize benefits while reducing on environment. Improving crop use efficiency (NUE) required for conservation agricultural sustainability. objective this article introduce modern developments imminent prospects improving crops NUE using various complementary methods. Here, approaches site-specific management, synthetic biological nitrification inhibitors, microbial nitrate (NO 3 − ) immobilization stimulation, stimulation dissimilatory reduction ammonium (DNRA), adopting agroforestry system, breeding techniques, quantitative trait loci (QTL) mapping, omics approaches, potential new targets overexpression N-related genes were presented as effective NUE. Optimal rate, time, application methods, specially formulated forms fertilizer, inhibitors are most practices linked with The fertilizer recommendations could be often justified across field rather than uniform spatial variability nutrient content. Restoring NO retention capacity system can also promising ways improve Furthermore, genetic modification or development cultivars that more efficiently critical. In addition, data, including transcriptomics metabolomics, not only advance our current understanding reactions help us move towards strategies, enhancing production. conclusion, strongly advocates integrated private insight genetics management when managing N.
Language: Английский
Citations
25
CATENA, Journal Year: 2022, Volume and Issue: 217, P. 106499 - 106499
Published: July 2, 2022
Language: Английский
Citations
24
Journal of Applied Ecology, Journal Year: 2023, Volume and Issue: 60(7), P. 1364 - 1375
Published: March 30, 2023
Abstract Plant species diversity (PSD) regulates ecosystem structure and functions, is a key issue we need to consider when design vegetation restoration projects. Increasing PSD has been shown promote or decrease soil nitrogen (N) availability, but the underlying mechanisms have not well explored. Here, 45 plots with Shannon–Weiner indices ranging from 0.15 3.57 were selected in subtropical forest explore effect of on N transformations. Higher significantly enhanced rates gross mineralization, nitrification, microbial immobilization, net nitrification contents total inorganic N. Structural equation modelling showed that indirectly impacted transformations via its roles regulating organic matter, mineral traits. stimulated mineralization mainly positive effects biomass content gene abundances chiA , archaeal bacterial amoA while increased immobilization due stimulation matter. Synthesis applications . Our findings highlight crucial role stimulating availability provide mechanistic understanding which can be integrated into Earth system models better predict C sequestration response PSD.
Language: Английский
Citations
16
Global Change Biology, Journal Year: 2023, Volume and Issue: 29(14), P. 4018 - 4027
Published: April 27, 2023
The responses of soil nitrogen (N) transformations to climate change are crucial for biome productivity prediction under global change. However, little is known about the gross N transformation rates drought gradient. Along an aridity gradient across 2700 km transect drylands on Qinghai-Tibetan Plateau, this study measured three main in both topsoil (0-10 cm) and subsoil (20-30 using laboratorial 15 labeling. relevant abiotic biotic variables were also determined. results showed that mineralization nitrification steeply decreased with increasing when was less than 0.5 but just slightly larger at layers. In topsoil, decreases two accompanied by similar patterns total content microbial biomass carbon (p < .05). subsoil, although pattern still .05), did not > Instead, bacteria ammonia oxidizing archaea abundances With threshold 0.6, immobilization rate increased wetter region (aridity 0.6) bacteria/fungi ratio, drier where mineral layers This provided new insight understand differential should be noted biogeochemical models better predict cycling manage land context
Language: Английский
Citations
16
Global Change Biology, Journal Year: 2023, Volume and Issue: 30(1)
Published: Nov. 9, 2023
Abstract Identifying tipping points in the relationship between aridity and gross nitrogen (N) cycling rates could show critical vulnerabilities of terrestrial ecosystems to climate change. Yet, global pattern N response across remains unknown. Here, we collected 14,144 observations from 451 15 N‐labeled studies used segmented regression identify threshold responses soil process‐related variables index (AI), which decreases as increases. We found on a scale that increasing reduced nitrate consumption but increased nitrification capacity, mainly due microbial biomass carbon (MBC) (MBN) pH. Threshold production retention was observed ecosystems. In croplands, extractable were inhibited with below AI ~0.8–0.9 ammonia‐oxidizing archaea bacteria, while opposite favored above this threshold. grasslands, mineralization immobilization decreased ~0.5 MBN, true forests, stimulated ~1.0 C/N ratio, ammonium ~1.3 total MBC/MBN ratio. Soil dissimilatory reduction globally forests when ~1.4 passed. Overall, suggest any projected increase change is likely reduce plant availability arid regions enhancing it humid regions, affecting provision ecosystem services functions.
Language: Английский
Citations
15