Опубликована: Янв. 1, 2024
Язык: Английский
Ecology and Evolution, Год журнала: 2024, Номер 14(2)
Опубликована: Фев. 1, 2024
Exploring how interactions between species evenness and dominant identity affect litter decomposition processes is vital to understanding the relationship biodiversity ecosystem functioning in context of global changes. We carried out a 127-day experiment under controlled conditions, with four types (high, medium, low single species) three (
Язык: Английский
Процитировано
2
Soil Biology and Biochemistry, Год журнала: 2024, Номер 193, С. 109402 - 109402
Опубликована: Март 14, 2024
Язык: Английский
Процитировано
2
CATENA, Год журнала: 2024, Номер 247, С. 108502 - 108502
Опубликована: Ноя. 1, 2024
Язык: Английский
Процитировано
2
Remote Sensing, Год журнала: 2023, Номер 15(18), С. 4502 - 4502
Опубликована: Сен. 13, 2023
The Lancang–Mekong River Basin (LMRB) is the largest international river in Southeast Asia, supporting a population of about 70 million people. Precipitation main source water resources basin, with significant impacts on ecology, production, and livelihoods basin. In this study, future precipitation was projected using Coupled Model Intercomparison Project Phase 6 (CMIP6) climate models. initial bias each model corrected daily bias-correction (DBC) method, then models were ensembled Bayesian model-averaging (BMA) method. evaluation, based metrics such as climatology bias, root-mean-square error (RMSE), mean absolute (MAE), correlation coefficient (COR), showed that ensemble performs better than individual under four Shared Socioeconomic Pathway scenarios (SSP126, SSP245, SSP370, SSP585) displayed an increasing trend throughout LMRB. anomalies annual 2061–2090 scenario are 136 mm, 142 114 227 order. spring winter shows northern LMRB decreasing southern LMRB, summer autumn almost whole basin (significance level 0.05). Spring Mekong Delta decreases all scenarios. ratio wet-season to dry-season for scenarios, indicating difference between will increase future. For precipitation, Lancang (LRB) dominated by 3–5% number days 5–10 mm/d (MRB) 10–20 SSP 2061–2090. There important changes spatial distribution 2500 mm isohyet expanding outwards circular pattern center 1500 moving westwards; i.e., areas exceeding expand. 500 shrinks, mainly towards center, while 300 moves east, below future, generally become wetter wet season drier dry season.
Язык: Английский
Процитировано
6
Frontiers in Microbiology, Год журнала: 2024, Номер 15
Опубликована: Янв. 24, 2024
Saltmarsh is widely recognized as a blue carbon ecosystem with great storage potential. Yet soil respiration major contributor of atmospheric CO2 can offset its sink function. Up to date, mechanisms ruling emissions from saltmarsh remain unclear. In particular, the effect precipitation on unclear in coastal wetlands, due lack outdoor data real situations. We conducted 7-year field manipulation experiment Yellow River Delta, China. Soil five treatments (-60%, -40%, +0%, +40%, and + 60% precipitation) was measured field. Topsoils last 3 years (2019-2021) were analyzed for production potential by microcosm experiments. Furthermore, quality quantity organic microbial function tested. Results show that only moderate rise +40% induced 66.2% increase experiments, whereas other showed weak impact. Consistently, also found be strongest at +40%. The positively correlated carbon, including quality. But diversity did not any positive response sizes. r-/K-strategy seemed plausible explanation biological factors. Overall, our finding reveal increase, decrease or robust likely improve quantity, bacterial oligotroph:copiotroph ratio, ultimately leading an enhanced production.
Язык: Английский
Процитировано
1
Forest Science and Technology, Год журнала: 2024, Номер 20(3), С. 231 - 243
Опубликована: Май 20, 2024
Fertilizer application plays a crucial role in the decomposition of white poplar leaf litter and cycling nutrients within forest ecosystems. The impact various fertilizer additions on nutrient is poorly understood. In this study, seven treatments were conducted at following levels: Control (CK), no adding mineral fertilizers, N fertilization (+N), P (+NP), N, P, K (+NPK), (+PK), manure (+MF), bird fertilizers (+BF) plantation Qadis district, used litterbag techniques to measure mass remaining. main objectives our study were: (1) explore response accelerate process; (2) examine relationship between C, concentration their stoichiometric characteristic soil. investigation, results showed that was significantly affected by process greatly accelerated with + MF, +NPK, BF. decay rate constant k (year −1) shows as follows: +MF > +NPK +BF +PK +NP +N CK (0.56, 0.53, 0.52, 0.51,0.51,0.5, 0.46). Soil increased during time BF, respectively, while C:N, C:P, N:P ratios highest litter, lowest soil, we observed significant association concentrations soil stoichiometric. This current concluded BF might be preferred management option they provided potentially beneficial changes concentration. data obtained will valuable reference for strategies
Язык: Английский
Процитировано
1
Hydrobiologia, Год журнала: 2024, Номер 851(21), С. 5139 - 5150
Опубликована: Авг. 13, 2024
Язык: Английский
Процитировано
1
Soil Biology and Biochemistry, Год журнала: 2024, Номер unknown, С. 109695 - 109695
Опубликована: Дек. 1, 2024
Язык: Английский
Процитировано
1
Land Degradation and Development, Год журнала: 2023, Номер 35(3), С. 1178 - 1191
Опубликована: Ноя. 13, 2023
Abstract Grasslands support a rich diversity that plays pivotal role in ecological balance, carbon sequestration, and climate regulation. Grassland ecosystems are facing loss of biodiversity decline soil function due to precipitation variations caused by change. However, grassland species not clearly known, especially under the combined effects grazing. Based on 5‐year split‐plot experiment with two grazing regimes (i.e., moderate prohibition) along three controls (ambient ±50% precipitation) Inner Mongolian grasslands, we researched response variability prohibition vegetation indices investigated community composition biomass these factors. Five years results showed increasing resulted significant increase coverage perennial forbs, annual biennial plants, Gramineae. Grazing increased significantly richness compared all other treatment combinations. Interestingly, exclusion reduced percentage Amaryllidaceae, presence altered precipitation. The typical was correlated volumetric water content (VWC), bulk density (SBD) pH, organic (SOC), total nitrogen (TN). VWC, SBD, TN were found be most factors affecting Partial canonical ordination revealed moisture, density, SOC had correlation both conditions. These suggested alterations can change ecosystem plant communities, leading close relationship between properties. Our underline importance for characteristics environmental Eurasian steppe ecosystem.
Язык: Английский
Процитировано
3
Global Ecology and Conservation, Год журнала: 2023, Номер 47, С. e02683 - e02683
Опубликована: Окт. 14, 2023
Litter distribution significantly affects nutrient cycling, energy transfer, and various ecosystem services. However, little is known about how microtopography litter accumulation on the forest floor. Distribution characteristics of stocks at slope-scale their relationship with topography rock exposure rate (RER) in a typical subtropical karst China were determined by measuring stock RER 300 1 × m grids 10 120 square limestone hill. The results showed that (1) average was 691.54 ± 332.60 g∙m-2, among which 65.81% undecomposed litter; (2) spatial uneven moderate variation, presenting five aggregated areas four sparse entire slope; (3) there significant negative correlation between (R = −0.37, P < 0.01), increased increasing slope gradient position; (4) coupled directly affected via redistribution process indirectly decomposition altering microenvironment, reshaped pattern stocks. Our research highlights importance complex morphology ecosystems cycling transfer mediating redistribution, providing new insights into formation high environmental heterogeneity habitats.
Язык: Английский
Процитировано
1