Heavy Nitrogen Application Rate and Long-Term Duration Decrease the Soil Organic Carbon and Nitrogen Sequestration Rates in Forest Ecosystems

Forests, Journal Year: 2024, Volume and Issue: 15(9), P. 1585 - 1585

Published: Sept. 10, 2024

Nitrogen addition alters soil organic carbon (SOC) and total nitrogen (TN) accumulation in forest ecosystems, but the responses of SOC TN sequestration rates dynamics to ecosystems worldwide remain unclear. This study conducted a global analysis evaluate effects application rate, duration (time), humidity on from 257 data points (63 articles). increased by 4.48% 10.18%, respectively. The were 0.65 0.11 g kg−1 yr−1, Moreover, percentage changes overall with rate addition; however, decreased addition. In addition, change index. conclusion, promoted soil, TN; they whereas TN. These results enhance our understanding cycling soils context deposition.

Language: Английский

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A global analysis of the effects of forest thinning on soil N stocks and dynamics

CATENA, Journal Year: 2024, Volume and Issue: 246, P. 108411 - 108411

Published: Sept. 20, 2024

Language: Английский

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Effects of Warming on Change Rate of Soil Organic Carbon Content in Forest Soils

Forests, Journal Year: 2025, Volume and Issue: 16(1), P. 59 - 59

Published: Jan. 1, 2025

Climate warming affects the carbon cycle in terrestrial environments. However, effects of on change rate soil organic (SOC) content forest soils are unclear. Here, we extracted 276 data points from 98 published papers to examine SOC mineral profile (0–20 or 0–30 cm), focusing regulatory magnitude and duration humidity index. Warming promoted an increase 67.47 69.90 g kg−1 soils, with a 0.85 yr−1 global scale. The decreased 1.22 0.11 at 0–2 >2 °C, respectively, it changed 0.96 −0.81 −0.51 durations 0–5, 5–10, >10 years, respectively. was higher index value 30–50 than >50. Although climate increases content, decreases increased but These findings help elucidate accumulation context change.

Language: Английский

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Forest thinning effects on soil carbon stocks and dynamics: Perspective of soil organic carbon sequestration rates

CATENA, Journal Year: 2025, Volume and Issue: 250, P. 108759 - 108759

Published: Jan. 25, 2025

Language: Английский

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Investigating the Variation in Leaf Traits Within the Allium prattii C.H. Wright Population and Its Environmental Adaptations

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 541 - 541

Published: Feb. 10, 2025

Morphological and micro-morphological traits of characteristics serve as the cornerstone for species identification taxonomy, they also ensure adaptive responses to specific environmental conditions. Allium prattii C.H. Wright is mainly distributed in mountains southwestern China (MSC) adjacent regions, exhibits pronounced variations leaf morphology micro-morphology across different growth environments, making it an ideal taxa study adaptation diverse In this study, we conducted extensive field surveys, sample collections, morphological experiments, amassing data on from 45 populations A. prattii. Specifically, explored differences among patterns geographical distribution. Consequently, examined correlation between seven climatic factors, longitude, latitude, traits, simulated changes distribution area during historical periods. Our results indicate that all can be categorized into four distinct lineages, characterized by significant divergence patterns. Populations located Hengduan Mountains neighboring regions demonstrated elevated coefficients variation (CV) morphology. The analysis factors highlighted substantial links density stomata upper epidermis variables, well correlations length/width (latitude longitude). Simulations revealed ranges underwent a fluctuation Last Interglacial Period (LIG) Glacial Maximum (LGM), Mid-Holocene (MH), current period, accompanied expansion its potential future. These underscore has significantly varied response with decrease width increase stomatal epidermis. heterogeneous environment mountain region, altitude, temperature, precipitation, primary driver leaves. findings hold scientific significance, shedding light evolutionary MSC areas.

Language: Английский

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Sand dune fixation enhances the contribution of microbial necromass carbon to soil organic carbon: A case study of Mu Us Sandy Land in China

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 209, P. 106011 - 106011

Published: March 6, 2025

Language: Английский

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Effects of vegetation restoration on soil microbial necromass carbon and organic carbon in grazed and degraded sandy land

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 382, P. 125380 - 125380

Published: April 16, 2025

Language: Английский

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Change Characteristics of Soil Erodibility during Natural Restoration in an Earthquake Landslide of Southwestern China

Forests, Journal Year: 2024, Volume and Issue: 15(8), P. 1352 - 1352

Published: Aug. 2, 2024

Landslides caused by earthquakes bring about dramatic changes in soil erodibility. In order to understand the change characteristics of erodibility during a vegetation restoration period after 5.12 Wenchuan earthquake, non-landslide area, landslide and transition area Leigu Town, Beichuan County were selected as research areas. Field sampling, geostatistics, spatial interpolation used explore spatiotemporal physicochemical properties natural 2013 (5 years earthquake) 2022 (14 earthquake). The results showed that comprehensive index (CSEI) was mainly composed five factors, which pH, total nitrogen (TN), mean weight diameter aggregates (MWD), fractal dimension water stable (D), (Kepic). CSEI slightly lower than area. gradually increasing process earthquake. From 2022, increase rates 6.9%, 10.0%, 41.5% for respectively. Along attitude segments, distribution is more uniform 2013. higher value located upper part appeared moderate autocorrelation. variable ranges 20 m. early stage restoration, conservation engineering recommended

Language: Английский

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Reduced Precipitation Decelerates Litter Decomposition But Promotes Extracellular Enzyme Activities in Two Contrasting Litter Species

Published: Jan. 1, 2024

Language: Английский

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Simulated nitrogen deposition altered the differences in leaf traits among seasons and plant types along the vertical gradient in an evergreen broadleaf forest of western China

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 29, 2024

Background and Aims Previous studies have focused on differences in leaf functional traits (LFTs) response to N addition under spatiotemporal or species classification variations. However, N-rich forest ecosystems, it is unknown whether continuous input regulates plant phenology, further strengthening weakening these differences. Methods We examined how at 0, 20 (LN), 40 kg hm^–2 a^–1 (HN) affected the variations LFTs (and trait-trait covariations) among seasons (April August) types an evergreen broadleaf western China. Results Along vertical vegetation gradient (from trees shrubs herbs), seasonal variation diminished. Most plants had higher C P contents August than April. The HN treatment reduced content of herbs, while accentuated that shrubs. Additionally, significantly decreased between both enhancing herbs August. did not affect pH, dry matter content, specific area. Only N–P scaling covariations with increasing addition. Conclusion High may aggravate this area move towards saturation limitation. heterogeneous different ecological adaptation strategies additions regulating dynamics as well types, could important implications for plant–soil feedback mechanisms concerning nutrient

Language: Английский

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