Global meta-analysis reveals differential effects of microplastics on soil ecosystem

The Science of The Total Environment, Год журнала: 2023, Номер 867, С. 161403 - 161403

Опубликована: Янв. 5, 2023

A large number of individual studies and meta-analyses have shown that microplastics (MPs) affect soil ecosystems. However, the effects different concentrations types MPs on ecosystem are still unclear. Here, a comprehensive meta-analysis was performed to examine responses 19 variables, associated with properties, microbes, enzymes, fauna, MPs, based 114 peer-reviewed studies. The results showed addition significantly reduced organic carbon (SOC), total nitrogen (TN), NH4+-N, pH, diversity bacteria, increased dissolved (DOC), fungi enzyme activities, especially enzymes related biogeochemical cycle. We further discussed exerted negative including survival, growth, reproduction, concentration rather than type, biggest driving factor causing toxicity affecting animals. More importantly, were main DOC, TN, NO3--N, phosphorus (TP), available (AP), fungi, whereas factors reflected in SOC, activities. This study aimed evaluate response ecosystems largest for MPs.

Язык: Английский

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Roles of the soil microbiome in sustaining grassland ecosystem health on the Qinghai-Tibet Plateau

Microbiological Research, Год журнала: 2025, Номер unknown, С. 128078 - 128078

Опубликована: Янв. 1, 2025

Язык: Английский

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Impact of restoration measures on plant and soil characteristics in the degraded alpine grasslands of the Qinghai Tibetan Plateau: A meta-analysis

Agriculture Ecosystems & Environment, Год журнала: 2023, Номер 347, С. 108394 - 108394

Опубликована: Фев. 9, 2023

Язык: Английский

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Morphology, photosynthetic physiology and biochemistry of nine herbaceous plants under water stress

Frontiers in Plant Science, Год журнала: 2023, Номер 14

Опубликована: Март 30, 2023

Global climate warming and shifts in rainfall patterns are expected to trigger increases the frequency magnitude of drought and/or waterlogging stress plants. To cope with water stress, plants develop diverse tactics. However, adoption capability mechanism vary depending upon plant species identity as well duration intensity. The objectives this study were evaluate species-dependent responses alpine herbaceous stress. Nine subjected different stresses (including moderate waterlogging) pot culture using a randomized complete block design three replications for each treatment. We hypothesized that would negatively impact growth metabolism. found considerable interspecies differences morphological, physiological, biochemical when exposed same regime. In addition, we observed pronounced interactive effects regime on height, root length, root/shoot ratio, biomass, contents chlorophyll a, b, (a+b), carotenoids, malondialdehyde, soluble sugar, betaine, protein proline, implying respond differently. Our findings may cast new light ecological restoration grasslands wetlands Qinghai-Tibetan Plateau by helping select stress-tolerant species.

Язык: Английский

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Global warming changes biomass and C:N:P stoichiometry of different components in terrestrial ecosystems

Global Change Biology, Год журнала: 2023, Номер 29(24), С. 7102 - 7116

Опубликована: Окт. 14, 2023

Abstract Global warming has significantly affected terrestrial ecosystems. Biomass and C:N:P stoichiometry of plants soil is crucial for enhancing plant productivity, improving human nutrition, regulating biogeochemical cycles. However, the effect on biomass different components (plant, leaf, stem, root, litter, soil, microbial biomass) in various ecosystems remains uncertain. We conducted a comprehensive meta‐analysis to investigate global patterns responses warming, as well interaction relationships based 1399 paired observations from 105 studies. Results indicated that had significant impact aspects growth, including an increase (+16.55%), C:N ratio (+4.15%), leaf (+16.78%), stem (+23.65%), root (+22.00%), litter (+9.54%) (+5.64%). it also decreased C:P (−23.34%), (−12.88%), N:P (−14.43%) (−16.33%). The magnitude was primary drivers changes stoichiometry. By establishing general response curves ratios with increasing temperature, we demonstrated plant, shifted negative positive, whereas changed positive temperature increased. Additionally, ratio, biomass, negative, effects N:P, C:P, ratios, temperature. Our research can help assess productivity optimize ecosystem precisely context warming.

Язык: Английский

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Biodiversity in mountain soils above the treeline

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2025, Номер unknown

Опубликована: Май 14, 2025

ABSTRACT Biological diversity in mountain ecosystems has been increasingly studied over the last decade. This is also case for soils, but no study to date provided an overall synthesis of current state knowledge. Here we fill this gap with a first global analysis published research on cryptogams, microorganisms, and fauna soils above treeline, structured Based corpus almost 1400 publications expertise 37 soil scientists worldwide, summarise what known about distribution patterns each these organismal groups, specifically along elevation, provide overview available knowledge drivers explaining their changes. In particular, document elevation‐dependent decrease faunal while cryptogams there initial increase followed by towards nival belt. Thus, our data confirm key role that elevation plays shaping biodiversity organisms soils. The response prokaryote turn, was more diverse, whereas fungal appeared be substantially influenced plants. As far as available, describe characteristics, adaptations, functions species, despite lack ecological information uncultivated majority prokaryotes, fungi, protists, illustrate remarkable unique life forms histories encountered alpine By applying rule‐ well pattern‐based literature‐mining approaches semi‐quantitative analyses, identified hotspots European Alps Central Asia revealed significant gaps taxonomic coverage, particularly among biocrusts, fauna. We further report thematic priorities treeline identify unanswered questions. Building upon outcomes synthesis, conclude set opportunities worldwide. Soils fulfil critical make essential contributions land. Accordingly, seizing closing appears crucial enable science‐based decision making regions formulating laws guidelines support conservation targets.

Язык: Английский

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Comprehensive Ecological Risk Changes and Their Relationship with Ecosystem Services of Alpine Grassland in Gannan Prefecture from 2000–2020

Remote Sensing, Год журнала: 2024, Номер 16(12), С. 2242 - 2242

Опубликована: Июнь 20, 2024

Alpine grassland is one of the most fragile and sensitive ecosystems, it serves as a crucial ecological security barrier on Tibetan Plateau. Due to combined influence climate change human activities, degradation alpine in Gannan Prefecture has been increasing recent years, causing increases risk (ER) leading ecosystem facing unprecedented challenges. In this context, particularly construct potential damage index (PGDI) assessment framework that can be used effectively characterize ecosystem. This study comprehensively uses multi-source data PGDI based resilience index, landscape ER grass–livestock balance index. Thereafter, we proposed feasible for assessing comprehensive analyzed responsive relationship between services (ESs) grassland. There are four findings. The first from 2000–2020 had low distribution southeast high trend northwest, with medium (29.27%) lower (27.62%) dominating. high-risk area accounted 4.58% was mainly Lintan County, border Diebu Zhuoni Counties, eastern part Xiahe southwest Hezuo. Second, ESs showed pattern northwest southeast. only 9.30% studied were distributed west Maqu County central County. Third, Moran’s values 2000, 2005, 2010, 2015, 2020 −0.246, −0.429, −0.348, −0.320, −0.285, respectively, thereby indicating significant negative spatial autocorrelation all aspects. Fourth, caused by action multiple factors. differences driving factors affect ER. Landscape dominant factor affecting ER, q greater than 0.25, followed DEM NDVI. addition, interaction diversity NDVI greatest impact Overall, offers new methodological quantification grasslands.

Язык: Английский

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Natural seasonal freeze-thaw processes influenced soil quality in alpine grasslands: Insights from soil functions

Soil Biology and Biochemistry, Год журнала: 2024, Номер unknown, С. 109642 - 109642

Опубликована: Окт. 1, 2024

Язык: Английский

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Impact of deeper groundwater depth on vegetation and soil in semi-arid region of eastern China

Frontiers in Plant Science, Год журнала: 2023, Номер 14

Опубликована: Июнь 29, 2023

Understanding the impact of deep groundwater depth on vegetation communities and soil in sand dunes with different underground water tables is essential for ecological restoration conservation groundwater. Furthermore, this understanding critical determining threshold value that ensures survival vegetation.This paper was conducted a semi-arid region eastern China, effects (6.25 m, 10.61 15.26 m) properties (0-200 cm) across three dune types (mobile, semi-fixed, fixed dunes) were evaluated ecosystem Horqin Sandy Land.For community, variations same species are more significant at depths. For properties, negatively influences moisture, total carbon, nitrogen, available phosphorus concentrations, pH. Besides, also significantly affected organic carbon potassium concentrations. In addition, herb mainly distributed areas lower depth, yet arbor shrub sparsely places deeper depth.As key drivers sustainability, adaptation these dominant to increasing may alleviate negative depth; however, restrictions exceeded depth.

Язык: Английский

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Inoculation of cold-adapted microbial consortium screened from alpine meadows promotes the growth of mixed grasses by changing soil properties and enzyme activity

Rhizosphere, Год журнала: 2023, Номер 28, С. 100782 - 100782

Опубликована: Сен. 20, 2023

Язык: Английский

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