Spatial Differentiation of Mangrove Aboveground Biomass and Identification of Its Main Environmental Drivers in Qinglan Harbor Mangrove Nature Reserve DOI Open Access
Kaiyue Wang,

Meihuijuan Jiang,

Yating Li

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(19), P. 8408 - 8408

Published: Sept. 27, 2024

In the Bamen Bay area of Qinglan Harbor Mangrove Provincial Nature Reserve in Wenchang, Hainan Province, China, mangrove aboveground biomass (AGB) was estimated using high-resolution UAV ortho-imagery and LiDAR data. The spatial distribution characteristics AGB were studied global Moran’s I index hotspot analysis. Optimal geographic detectors regression models employed to analyze relationship between key environmental factors. results indicate that (1) average study 141.22 Mg/ha, with significant variation. High values concentrated southwestern northeastern regions, while low mainly found central southeastern regions. (2) Plant species, water pH, soil total potassium, salinity, dissolved oxygen, elevation, organic matter, phosphorus, nitrogen identified as major factors influencing AGB. interaction either bifactor enhancement or nonlinear enhancement, showing a significantly higher impact compared single (3) Comprehensive model reveal primary factor affecting AGB, followed by pH having least impact. Factors positively correlated promoted growth, elevation negatively affected inhibiting accumulation. findings provide critical insights can guide targeted conservation efforts management strategies aimed at enhancing ecosystem health resilience, particularly focusing on areas for potential improvement addressing complex interactions among

Language: Английский

Unlocking Mechanisms for Soil Organic Matter Accumulation: Carbon Use Efficiency and Microbial Necromass as the Keys DOI
Yang Yang, Anna Gunina, Cheng Huan

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(1)

Published: Jan. 1, 2025

Soil microorganisms transform plant-derived C (carbon) into particulate organic (POC) and mineral-associated (MAOC) pools. While microbial carbon use efficiency (CUE) is widely recognized in current biogeochemical models as a key predictor of soil (SOC) storage, large-scale empirical evidence limited. In this study, we proposed experimentally tested two predictors POC MAOC pool formation: necromass (using amino sugars proxy) CUE (by 18O-H2O approach). sampling (0-10 10-20 cm depth) was conducted along climatic transect 900 km on the Loess Plateau, including cropland, grassland, shrubland, forest ecosystems, to ensure homogeneous parent material. We found highest accumulation occurred zones MAT between 5°C 10°C or MAP 300 500 mm. Microbial more positively related than (p < 0.05), suggesting that residues may improve strongly compared pool. Random linear regression analyses showed increased with fungal C, whereas bacterial drove MAOC. coupled 0.05) but decoupled SOC > 0.05). The have faster turnover rate due lack clay protection, which lead rapid thus their decoupling from CUE. sense, driven by necromass, explains dynamics. Our findings highlight insufficiency relying solely predict bulk storage. Instead, propose should be used together explain dynamics, each influencing distinct

Language: Английский

Citations

8
Increased Mineral‐Associated Organic Carbon and Persistent Molecules in Allochthonous Blue Carbon Ecosystems DOI Open Access
Yuan Li, Chuancheng Fu, Chenglong Ye

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(1)

Published: Jan. 1, 2025

ABSTRACT Coastal wetlands contain very large carbon (C) stocks—termed as blue C—and their management has emerged a promising nature‐based solution for climate adaptation and mitigation. The interactions among sources, pools, molecular compositions of soil organic C (SOC) within ecosystems (BCEs) remain elusive. Here, we explore these along an 18,000 km long coastal line salt marshes, mangroves, seagrasses in China. We found that mineral‐associated (MAOC) is enriched BCEs dominated by allochthonous inputs abundant active minerals, leading to increased proportion persistent molecules. Specifically, soils with (> 50%) are characterized substantial contribution MAOC 70%) total SOC notable preservation lipids (36%) across seagrasses. burial particles, derived from external sources such rivers or tidal influxes, facilitates the formation stable through binding mineral surfaces occlusion microaggregates. proportions particulate (POC) important predictors matter. Lipid composition decrease POC autochthonous increase. These findings provide new insights into coupled control over sequestration BCEs, emphasizing role inputs, components.

Language: Английский

Citations

1
Contrasting stocks and origins of particulate and mineral-associated soil organic carbon in a mangrove-salt marsh ecotone DOI Creative Commons
Prakhin Assavapanuvat, Joshua L. Breithaupt,

Kevin M. Engelbert

et al.

Geoderma, Journal Year: 2024, Volume and Issue: 446, P. 116904 - 116904

Published: May 7, 2024

The global warming-driven poleward expansion of mangrove habitats (e.g., Avicennia germinans and Rhizophora mangle) into temperate salt marshes Spartina alterniflora Juncus roemerianus) has been shown to alter coastal soil organic carbon (SOC) storage. However, the taxa-specific consequences this vegetation shift on origin size SOC sub-fractions (particulate OC (POC); mineral-associated (MAOC); reactive iron-associated (FeR-MAOC)) remain largely unexplored. In study, we used a particle size-based fractionation method compare quantity δ13C composition bulk each in cores collected from Apalachicola Bay barrier islands Florida, USA, highest latitude where monospecific communities all four aforementioned plants co-occur. Depth-dependent variation clearly showed replacement S. by mangroves, as well reciprocal substitutions J. roemerianus, probably driven changes wetland elevation. Higher burial rates suggested that soils were principally developed deposition. contrast, comparatively lower but higher stocks marsh illustrated subsurface input roots. POC was primarily derived contemporary plant detritus; its concentration (58.8 ± 9.0 % SOC) relative mangroves (38.4 6.0 SOC). MAOC content did not vary across (53.5 10.9 SOC), originated microbially-transformed pre-existing plants. FeR-MAOC essentially absent R. mangle (2.9 3.6 while representing minor fraction three other (7.8 7.0 more like present-day surface plants, highlighting situ formation their active oxidizing rhizospheres.

Language: Английский

Citations

5
Organic matter composition and stability in estuarine wetlands depending on soil salinity DOI

Lele Wu,

Zhaoliang Song, Yuntao Wu

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 945, P. 173861 - 173861

Published: June 12, 2024

Language: Английский

Citations

5
The predominance of root- and salt-marsh-derived soil organic carbon in a mangrove poleward range expansion front DOI Creative Commons
Prakhin Assavapanuvat, Joshua L. Breithaupt, Ding He

et al.

Geoderma, Journal Year: 2025, Volume and Issue: 456, P. 117249 - 117249

Published: March 19, 2025

Language: Английский

Citations

0
Organo-metal coprecipitation contributes to stable organic carbon fraction in mangrove soil DOI Creative Commons

Kota Hamada,

Nada Yimatsa,

Toshiyuki Ohtsuka

et al.

CATENA, Journal Year: 2025, Volume and Issue: 256, P. 109075 - 109075

Published: April 24, 2025

Language: Английский

Citations

0
Strong heterogeneity in laterally exchanged particulate organic matter across tidal marshes in a large river delta DOI
Qi Wu,

H. Z. Cao,

Youhei Yamashita

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121740 - 121740

Published: April 1, 2025

Language: Английский

Citations

0
Fate of soil organic carbon in estuarine mangroves: Evidences from stable isotopes and lignin biomarkers DOI
Guoming Qin, Zhe Lü, Shuchai Gan

et al.

CATENA, Journal Year: 2024, Volume and Issue: 246, P. 108401 - 108401

Published: Sept. 18, 2024

Language: Английский

Citations

3
Spatial pattern of biodiversity-carbon-coastal protection trade-offs and synergies potential in China’s mangroves and salt marshes DOI
Tong Li, Yangfan Li, Xuanhao Huang

et al.

CATENA, Journal Year: 2025, Volume and Issue: 250, P. 108738 - 108738

Published: Jan. 23, 2025

Language: Английский

Citations

0
Can fine sediment addition promote carbon stabilization in coastal wetland soils? A laboratory experiment DOI
Anthony J. Mirabito,

Jason A. Anandappa,

Nia Hurst

et al.

Soil Science Society of America Journal, Journal Year: 2025, Volume and Issue: 89(2)

Published: March 1, 2025

Abstract Scientists are increasingly exploring soil carbon (C) stabilization processes that protect organic C from microbial decomposition. Mineral‐associated matter (MAOM) is considered one of the most protected pools C, but remains understudied in wetland soils relative to upland soils. Using complementary intact core and bottle incubation studies, this research investigated how fine sediment addition, form dredged sediment, impacts respiration MAOM coastal vary by (SOM) content particle size. We hypothesized additions would reduce increase pools, with greatest response addition being high SOM soil. Contrary our prediction, sediments cores did not change rate, CO 2 production rate decreased 21% low cores, mass MAOM‐C increased 23% after receiving additions. In study only, varied initial Specifically, largest particles (>2 mm) showed a 1727% MAOM‐C, which coincides 49% decrease CH 4 rate. Overall, protection resulting differed type texture, suggesting properties (e.g., existing mineral content, nutrient availability, degree decomposition) influence through these should be when choosing potential restoration sites.

Language: Английский

Citations

0