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Introduction
Publications
Publications (18)
Investigating the quantity and spatiotemporal dynamics of metabolite release from plant roots is essential if we are to understand the ecological significance of root exudates in the rhizosphere; however, this is difficult to quantify. In the present study, we quantified in situ root exudation rates during three incubation periods (0–24, 24–48, and...
In forest ecosystems, variations in aboveground litter input caused by global changes, substantially alter soil N cycling. In field-grown plants, few studies have directly measured root exudation rates and quantified their effects on N transformations under litter manipulation. We quantified soil N transformation rate responses to litter manipulati...
Grazing management practices are a major factor regulating nutrient cycling and plant growth in grasslands. However, the response of long-term grazing regimes to ecosystem carbon and nitrogen accumulation and plant productivity remains uncertain in karst landscapes. The purpose of this research is to assess the effects of long-term management measu...
Wetlands are facing gradual drying, leading to large carbon loss due to the transformation from anaerobic to aerobic conditions, but the temperature and drought effects from the temperature and moisture fluctuation on soil organic carbon (SOC) mineralization remain uncertain. An incubation study with three moisture levels (100%, 60%, and 40% WHC, m...
Hydrothermal fluctuation is the major driving factor affecting greenhouse gas (GHG) emissions in wetlands, but how wetland drying regulates the temperature dependence of GHG emissions remains uncertain. An experimental incubation was carried out to study the interaction effects of temperature (5, 10, 15, 20°C) and moisture (40%, 60%, 100% WHC) on s...
Purpose
Biogas slurry is increasingly used as crop fertilizer. Previous researches focused on the relationships between aboveground and root growth under biogas slurry application, with little attention to root exudates. The aims of this study were to investigate the influences of biogas slurry application on the quantity and composition of root ex...
Plants are the main sources of soil organic carbon in forest ecosystems. Photosynthetic C assimilated by plants enters the soil through litter, root litter, and root exudates. However, it remains unclear how litter changes affect the plant-C input. We aimed to quantify the responses of C inputs via the litter, root litter, and root exudates to litt...
The Qinghai-Tibetan Plateau is a vast geographic area currently subject to climate warming. Improved knowledge of the CO2 respiration dynamics of the Plateau alpine meadows and of the impact of grazing on CO2 fluxes is highly desirable. Such information will assist land use planning. We measured soil and vegetation CO2 efflux of alpine meadows usin...
Low phosphorus (P) use efficiency of synthetic P fertilizers leads to soil degradation and environmental problems. Holistic approaches are required to increase crop productivity and enhance P use efficiency. The application of green manure results in multiple benefits for soil–plant systems. In this study, the following treatments were investigated...
Under the combined effect of stocking rate and grazing season, it is very significant to ascertain whether there is a quantitative relationship between plant community characteristics, chemical composition of forage, and grazing behaviors of Tibetan sheep to better utilize native pasture in the northeast region of the Qinghai–Tibetan Plateau (QTP)....
Information regarding the response of ecosystem respiration (ER) to various warming levels, especially in different grassland types and seasons, is scarce at the field scale in the permafrost region of the Tibetan Plateau (TP). In this study, we examined how different warming levels during different seasons affected ER in Tibetan alpine meadow and...
Uncertainties in the seasonal changes of greenhouse gases (GHG) fluxes in wetlands limit our accurate understanding of the responses of permafrost ecosystems to future warming and increased nitrogen (N) deposition. Therefore, in an alpine swamp meadow in the hinterland of the Qinghai-Tibet Plateau, a simulated warming with N fertilization experimen...
The limited number of in situ measurements of greenhouse gas (GHG) flux during soil freeze-thaw cycles in permafrost regions limits our ability to accurately predict how the alpine ecosystem carbon sink or source function will vary under future warming and increased nitrogen (N) deposition. An alpine meadow in the permafrost region of the Qinghai-T...
To identify the changing characteristics of runoff and climate change trends and their relationship in the Three-River Headwaters Region (TRHR), this study uses the runoff and meteorological data of three hydrological gauging stations and 12 meteorological stations across the TRHR for the period from January 1960 to December 2009 as the research su...
The Yangtze River and Yellow River source regions are part of the highest and largest distribution area of wetlands in the world and play a key role in sustaining the ecosystem balance in this region. Current global changes, such as climate change and human activity, are significantly affecting the landscape pattern of these wetlands. These changes...