Storage and Climatic Controlling Factors of Litter Standing Crop Carbon in the Shrublands of the Tibetan Plateau

Nie, Xiaodong; Wang, Dong; Yang, Lijing; Zhou, Guoying

doi:10.3390/f10110987

Cited by 5 publications

(5 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The aboveground biomass promotes more litter input and positively impacts the standing stock of litter. Due to the stimulation of more aboveground biomass input, soil organic matter also positively impacts the standing stock of litter [4]. The results show that all nutrients in litter are significantly positively correlated with soil.…”

Section: Introductionmentioning

confidence: 94%

Carbon Release Characteristics at Soil–Air Interface under Litter Cover with Different Decomposition Degrees in the Arbor and Bamboo Forests of Pi River Basin

Zhang,

Du,

Liu

et al. 2024

Land

View full text Add to dashboard Cite

This study adopted the method of “exchanging space for time” and set up three experimental groups based on the shape, degree of damage, and degree of humification of the litter, namely the undecomposed layer, the semi-decomposed layer, and the decomposed layer. Using typical slopes of arbor and bamboo forests in the Pi River Basin as the research object, from October 2021 to December 2022, the soil carbon release flux was measured by using a closed static chamber gas chromatography method to reveal the carbon release law at the soil–air interface during the decomposition process of litter and quantitatively characterize the dynamic impact of the litter decomposition process on soil carbon release flux. Results showed that soil methane flux remained negative (sink) while soil carbon dioxide flux was positive (source) in both litter-covered and bare soil conditions. The methane and carbon dioxide release from soil was positively correlated with and significantly influenced by environmental factors such as soil moisture content and temperature. The methane release flux from soil showed a linear fitting relationship with soil moisture content and temperature, while the carbon dioxide release flux from soil was more in line with the exponential fitting relationship with soil moisture content and temperature. However, there were significant differences in the roles of various factors under different types of litter.

show abstract

Section: Introductionmentioning

confidence: 94%

Carbon Release Characteristics at Soil–Air Interface under Litter Cover with Different Decomposition Degrees in the Arbor and Bamboo Forests of Pi River Basin

Zhang,

Du,

Liu

et al. 2024

Land

View full text Add to dashboard Cite

show abstract

“…STN was found to show a significant increasing trend with increasing biomass, whereas the relationship between STP and biomass was minor (Figure 2). In general, more biomass tends to cause a greater accumulation of forest litter (Nie et al, 2019), and this litter and plant residue contribute to increase in soil N input (Liu X. et al, 2010;Liang et al, 2019). As a result, increasing biomass triggered a positive relationship between STN and biomass in alpine wetland and alpine meadow in the Three Rivers Source Region on the Qinghai-Tibetan Plateau.…”

Section: Effects Of Vegetation Properties On Soil Total Nitrogen and ...mentioning

confidence: 99%

Drivers of Soil Total Nitrogen and Phosphorus Storage in Alpine Wetland Across the Three Rivers Source Region on the Qinghai-Tibetan Plateau

Nie

Wang

Zhou

et al. 2022

Front. Environ. Sci.

View full text Add to dashboard Cite

Although soil total nitrogen (STN) and soil total phosphorus (STP) play significant roles in terrestrial ecosystem function, their storage and driving factors in the alpine wetlands of the Qinghai-Tibetan Plateau remain unclear. In this study, we estimated STN and STP storage and their controlling factors, including vegetation, soil, and climate characteristics, using data collected from 50 sites across the wetlands in the Three Rivers Source Region. STN and STP storage in the top 30 cm of soil were 62.12 ± 37.55 Tg N and 9.24 ± 2.90 Tg P, respectively. Although STN density did not differ significantly for different vegetation types (i.e., alpine meadow and alpine wetland), belowground biomass showed a positive relationship with STN density. Mean annual precipitation (MAP) showed a significant positive relationship with STN density, whereas the effects of mean annual temperature on STN density were minor. Compared with the effects of vegetation and climatic factors, soil characteristics were found to not only exert a significant effect on STN density, but also influence the effects of climate and vegetation on STN density. For STP density, soil characteristics were found to be a significant controlling factor, whereas the effects of biomass and climatic factors were minor. The studied climate, soil, and vegetation characteristics jointly explained ∼54% of STN variance, whereas soil characteristics explained only 20% of STP variation. MAP indirectly affected STN density via effects on vegetation and soil, and its direct effect on STN density was minor. This indicated a strong relationship between biotic and abiotic effects and STN density. Identification of the factors influencing STN and STP variance in alpine wetlands contributes to our understanding of the biogeochemical cycle in high-altitude regions.

show abstract

“…Studies have shown that litter layer decomposition accounts for about 5% to 45% of the total soil CO 2 emission [15,52]. In order to reveal the mechanism of continuous mineralization and transformation of carbon in litter, Rubino et al found that 2/3 of the carbon in the litter enters the soil in the form of soluble carbon or debris and 1/3 enters the atmosphere in the form of CO 2 by using 13 C isotope tracing technology [16]. The addition of litter had a significant effect on the rate of soil CO 2 release, and also significantly increased the contents of soil dissolved organic carbon and microbial biomass carbon [53].…”

Section: Influence Of Litter On Soil Inorganic Carbonmentioning

confidence: 99%

“…Litter is the main source of topsoil organic matter, and plays an important role in changing soil properties, soil bulk density and porosity [12]. Quantifying the regional scale model of the current stock distribution of litter and studying the decomposition process of litter will help to improve the understanding of the mechanism of terrestrial carbon cycle and promote the accurate prediction of the response of terrestrial carbon cycle to future climate change [13].…”

Section: Introductionmentioning

confidence: 99%

Research Advances on Carbon-Water Relationship of Forest Litter-Soil Interface

Zhang¹,

Qin²,

Xiao³

et al. 2022

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Litter is an important part of terrestrial ecosystem. It affects the formation of soil organic matter, the supply of plant nutrients and the absorption and storage of soil carbon. In order to explore the mechanism of carbon water coupling at litter soil interface and the interaction between the two, this study focuses on the changes of litter characteristics during litter decomposition and its impact on soil carbon pool and soil carbon water relationship. Litter decomposition is mainly reflected in the reduction of litter volume and carbon content. In the study of litter, scholars pay more attention to the rate of litter decomposition and the release of nutrient elements and other trace elements and organic constituents during litter decomposition. And the litter decomposition is significantly affected by temperature and moisture. Litter decomposition also has significant effects on soil organic carbon, soil respiration and chemical nutrients. The soil water holding capacity is enhanced during litter decomposition. The changes of soil water content contribute to the changes of soil structure and physical and chemical properties, and then affect the stability of soil organic carbon and soil microbial activity. This study is of great significance for accurately predicting the dynamic changes of carbon and water at the litter soil interface and the carbon cycle of terrestrial ecosystem in the future, which also provides a reference for the further study of the related mechanism of forest litter soil interface.

show abstract

Storage and Climatic Controlling Factors of Litter Standing Crop Carbon in the Shrublands of the Tibetan Plateau

Cited by 5 publications

References 33 publications

Carbon Release Characteristics at Soil–Air Interface under Litter Cover with Different Decomposition Degrees in the Arbor and Bamboo Forests of Pi River Basin

Carbon Release Characteristics at Soil–Air Interface under Litter Cover with Different Decomposition Degrees in the Arbor and Bamboo Forests of Pi River Basin

Drivers of Soil Total Nitrogen and Phosphorus Storage in Alpine Wetland Across the Three Rivers Source Region on the Qinghai-Tibetan Plateau

Research Advances on Carbon-Water Relationship of Forest Litter-Soil Interface

Contact Info

Product

Resources

About