Publications by authors named "Chenjun Du"

Ecosystem service (ES)-oriented spatial optimization can contribute to regional well-being, especially for mountain ecosystems carrying multiple ES capacities. However, existing studies on mountain ecosystem services (MESs) predominantly address gradient dynamics, yet fail to incorporate landscape as a socio-ecological nexus, which hinders their practical application in spatial planning. Therefore, we proposed a spatial optimization strategy, leveraging landscape to strengthen the process from ES science to practical management in the Qinling Mountain (QLM), China.

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Grasslands account for approximately one-third of the global terrestrial carbon stocks. However, a limited understanding of the impact of grazing exclusion on carbon storage in grassland ecosystems hinders progress towards restoring overgrazed grasslands and promoting carbon sequestration. In this study, we conducted a comprehensive meta-analysis to investigate the effects of grazing exclusion on aboveground biomass (AGB) and soil organic carbon (SOC) in four grasslands: alpine grasslands (AP), tropical savannas (TS), temperate subhumid grasslands (TG), and a semi-desert steppe (SD).

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The use of frozen soil-vegetation feedback for predictive models is undergoing enormous changes under rapid climate warming. However, the influence of soil freeze-thaw (SFT) cycles on vegetation phenology and the underlying mechanisms remain poorly understood. By synthesizing a variety of satellite-derived data from 2002 to 2021 in the Northern Hemisphere (NH), we demonstrated a widespread positive correlation between soil thawing and the start of the growing season (SOS).

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Assessing flux and primary sources of the atmospheric nitrogen (N) deposition with high spatial resolution remained challenging. The epilithic moss is considered a suitable biological monitor to explore N deposition. Our study presented a detailed analysis of flux and major source contributions of ammonium (NH) and nitrate (NO) deposition using N and δN signatures of epilithic moss collected densely from the Yangtze River basin.

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Excessive phosphorus (P) loadings cause major pollution concerns in large catchments. Quantifying the point and nonpoint P sources of large catchments is essential for catchment P management. Although phosphate oxygen isotopes (δO) can reveal P sources and P cycling in catchments, quantifying multiple P sources in a whole catchment should be a research focus.

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Long-term series data can provide a glimpse of the influence of natural and anthropogenic factors on water chemistry. However, few studies have been conducted to analyze the driving forces of the chemistry of large rivers based on long-term data. This study aimed to analyze the variations and driving mechanisms of riverine chemistry from 1999 to 2019.

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REEs are emerging contaminants, and soils nearby coal and coal ash with high REEs composition are vulnerable to REEs contamination. Besides, coal industry can alter surrounding soil characteristics. However, there is information paucity about REEs contamination and geochemical behaviors along with soil characteristics around coal industrial areas, which are essential for understanding their toxicity and mobilization.

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Increasing industrial activity has led to a growing risk of arsenic (As) and cadmium (Cd) accumulations and biomagnifications in plants and humans. Arbuscular mycorrhizal fungi (AMF) have been extensively studied as a soil amendment owing to their capability to reduce the accumulation of As and Cd in plant tissues. However, a quantitative and data-based consensus has yet to be reached on the effect of AMF on As and Cd bioaccumulation and bioavailability.

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Moss nitrogen (N) concentration and isotopic composition (δN) values can reveal a better understanding of atmospheric N deposition patterns. Here, we summarize the moss N content and δN signatures using data compiled from 104 papers. Based on the dataset, we summarize the models for assessing the level and reduced (NH): oxidised compounds (NO) ratio of atmospheric N deposition.

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A substantial number of experiments have so far been carried out to study the response of the C-N-P stoichiometry of terrestrial plants to the rising CO level of the earth. However, there is a need of systematic evaluation for assessing the impact of the elevated CO on plant C-N-P stoichiometry. In the present investigation, a comprehensive meta-analysis involving 386 published reports and including 4481 observations has been carried out.

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