Land-use impacts on profile distribution of labile and recalcitrant carbon in the Ili River Valley, northwest China

Liu, Xiang; Li, Lanhai; Qi, Zhiming; Han, Jun; Zhu, Yayun

doi:10.1016/j.scitotenv.2017.02.087

Cited by 38 publications

(24 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, increasing total soil C has the potential to greatly increase crop production and decrease its variability (Yang et al, 2012, Peng et al, 2014, Srinivasarao et al, 2014and Huang et al, 2016. Liu et al (2017) reported that since SOC is critical for food security because it offers substrate and energy, , it also protects the biodiversity that assist in preserving soil quality and the ecosystem functions. Therefore, the maintenance and sequestration of SOC turns out to be great challenges to humanity to highlight the crisis of food insecurity and global change.…”

Section: Soil C N and Soil Qualitymentioning

confidence: 99%

“…The SOC sink capacity for adsorbing atmospheric CO 2 can be significantly enhanced if degraded soils and ecosystems are restored (Srinivasarao et al, 2014 andElbasiouny et al, 2017b). Furthermore, the soil potential to sequester C depends regional variation because of climate, plant species composition, inherent of soil properties, and age of ecosystem (Li et al, 2017). Fan et al (2014) emphasized on the great concern of the dynamics of SOC stocks as well the long-term role that the soil may act to accumulate and sequester atmospheric CO 2, due to their impacts on mitigating of the climate change, sustaining crop productivity, and enhancing soil fertility.…”

Section: Soil C Sequestration and Mitigating Climate Changementioning

confidence: 99%

“…As well, evaluating the relative proportions of the different soil C stocks holds great promise in improving our understanding of soil response to changing in management or climate. In this context, labile fractions of SOM including particulate organic matter (POM) and microbial biomass C (MBC), represent the active fractions of SOC that serve as primary indicators of SOC changes (Li et al, 2017) and evaluating soil quality (Yang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Soil carbon and nitrogen stocks and fractions for improving soil quality and mitigating climate change

Elbasiouny¹,

Elbehiry²

2019

Egypt.J. Soil Sci.

View full text Add to dashboard Cite

G LOBALLY, there is an increased global awareness of some environmental issues such as climate change. In this regard, new accessible and reliable data, locally and globally, regarding soil carbon (C) and nitrogen (N) stocks and their physical and chemical fractions, are needed. These data assist in making suitable decisions towards the mitigation of climate change impacts. Soil acts an important role in the global cycles (i.e. carbon (C) and nitrogen (N)) and both are linked and related not only to climate change mitigation but also sustaining agricultural productivity and improving soil quality. Soil C and N sequestration. Moreover, using good and novel long-term management practices are the most important methods for increasing their stocks and mitigating greenhouse gases (GHGs) emission, from soil to the atmosphere as well for improving soil quality and increase economic crop production. Therefore, the aim of this review is to summarize some basic information about soil C and N stocks and their fractions, especially they are related to climate change mitigation and soil quality.

show abstract

Section: Soil C N and Soil Qualitymentioning

confidence: 99%

Section: Soil C Sequestration and Mitigating Climate Changementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soil carbon and nitrogen stocks and fractions for improving soil quality and mitigating climate change

Elbasiouny¹,

Elbehiry²

2019

Egypt.J. Soil Sci.

View full text Add to dashboard Cite

show abstract

“…Using the acid hydrolysis method, SOC fractions are divided into labile organic carbon (LOC) and recalcitrant organic carbon (ROC) with different biochemical stabilities (Liu et al 2017;Vallejo 2002, 2007). LOC can be further split into labile fractions I (LF I) and II (LF II) in a two-step hydrolysis with H 2 SO 4 (Rovira and Vallejo 2007) .…”

Section: Introductionmentioning

confidence: 99%

Response of the Organic Carbon Fractions and Stability of Soil to Alpine Marsh Degradation in Zoige, East Qinghai-Tibet Plateau

Zhang

et al. 2020

J Soil Sci Plant Nutr

View full text Add to dashboard Cite

Soil organic carbon (SOC) fractions play a crucial role in the carbon cycle of alpine wetland ecosystems and regional climate regulation. In the last decades, alpine marshes at Tibetan Plateau have undergone increased degradation. The effects of marsh degradation on soil labile and recalcitrant organic carbon fractions and on SOC stability remain unclear. In this study, we investigated changes in SOC fractions with different biochemical recalcitrance and stability in the marsh ecosystems with various levels of degradation in the Zoige Wetland, Eastern Qinghai-Tibet Plateau. Soil samples of relatively pristine marsh (RPM), lightly degraded marsh (LDM), moderately degraded marsh (MDM), heavily degraded marsh (HDM) and severely degraded marsh (SDM) were collected and analysed using the acid hydrolysis method. Compared with RPM, the concentrations of SOC labile fraction I (non-cellulosic polysaccharides), SOC labile fraction II (cellulose) and recalcitrant organic carbon (ROC) in degraded marshes decreased significantly: 29-97, 38-95 and 32-99%, respectively, except for the LDM. The SOC recalcitrance index (RIc) in the HDM and SDM was significantly lower than that in RPM by 11-35 and 15-47%, respectively; compared with RPM, the stability of organic carbon was significantly lower in the HDM and SDM. Additionally, the marsh degradation increased vertical variation in the concentrations of SOC fractions. The degradation of alpine marshes decreases the capacity for carbon (C) sequestration via decreasing the resistance of SOC to biodegradation, indicating that the alpine marsh degradation may weaken the carbon sink capacity of the Zoige Plateau, thus aggravating the global greenhouse effect. Keywords Zoige. Marsh degradation. Labile organic carbon. Recalcitrant organic carbon. Soil organic carbon stability Highlights • Concentrations of labile and recalcitrant SOC decreased with marsh degradation. • Vertical variation in labile and recalcitrant SOC increased in degraded marshes. • Resistance of SOC to biodegradation decreased after marsh was moderately degraded. • Marsh degradation reduced the capacity of SOC sequestration.

show abstract

“…Changes in SOC fractions could serve as early indicators of changes in total SOC (Banger et al 2009). Since changes in SOC fractions could influence both nutrient supply and soil carbon sequestration, it is necessary to fractionate and quantify the labile and recalcitrant fractions, which would facilitate our understanding of factors influencing SOC kinetics (Belay-Tedla et al 2009;Liu et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Quantification and evaluation of soil organic carbon and its fractions: case study from the Classical Karst, SW Slovenia

Yang¹,

Prelovšek²,

Huang³

et al. 2019

View full text Add to dashboard Cite

Ravbar: Quantification and evaluation of soil organic carbon and its fractions: case study from the Classical Karst, SW Slovenia Soil organic carbon (SOC) is a critical measure of soil organic matter (SOM) content. SOM plays a vital role in ecosystem services, soil fertility, soil water retention capacity, and carbon cycling. SOC can be partitioned into various carbon fractions, which exhibit diverse stability and chemical compositions that are influenced variably by lithology as well as biological and climatic processes. A better understanding of SOC and the influence of different bedrock types on carbon fractions could facilitate the evaluation of the fate and stability of SOC. The present study is focused on the concentrations and characteristics of different SOC fractions (e.g., Labile organic carbon, LOC; Recalcitrant organic carbon, ROC; Calcium-bound organic carbon, Ca-SOC; Iron/aluminium-bound organic carbon, Fe/Al-SOC) in forest soils associated with different bedrock lithology under similar climate conditions in the centre of the 'Classical Karst' , and evaluates influence of the geological environment on SOC. SOC and SOC fraction concentrations decreased with an increase in depth in all profiles, indicating stabilized soil profiles. SOC values (9.7-45.5 g•kg-1) were consistent with the findings of other studies on soils in the region. ROC and Fe/Al-SOC (51.5-65.8 % and 68.0-73.3 %, respectively) were the major SOC fractions, while Ca-SOC accounted for a considerably lower proportion (6.4-7.4 %) of the SOC contents. Key factors Izvleček UDK 551.44:631.445.6(497.47) Hui Yang, Mitja Prelovšek, Fen Huang, Chunlai Zhang, Jianhua Cao & Nataša Ravbar: Kvantifikacija in vrednotenje organskega ogljika in njegovih frakcij v tleh: primer s Klasičnega Krasa, JZ Slovenija Z meritvami organskega ogljika v prsteh (SOC) izražamo vsebnost organskih snovi v prsteh (SOM). SOM igra ključno vlogo pri ekosistemskih storitvah, rodovitnosti, zmogljivosti zadrževanja vode in kroženju ogljika. SOC lahko razdelimo na različne ogljikove frakcije, ki kažejo različno stabilnost in kemično sestavo, na katero različno vplivajo litološka zgradba, biološki in podnebni procesi. Boljše razumevanje SOC in vpliv različnih vrst matične podlage na ogljikove frakcije bi lahko olajšala oceno stabilnosti SOC. Ta študija preučuje koncentracije in dinamiko različnih frakcij SOC (npr. labilni organski ogljik, LOC; rekalcitrantni organski ogljik, ROC; organski ogljik, vezan na kalcij; organski ogljik, vezan na železo/aluminij, Fe/Al-SOC) v gozdnih prsteh in povezanost z različno litološko zgradbo v podobnih podnebnih razmerah. Prostorsko se študija osredotoča na območje klasičnega krasa. Koncentracija SOC in njegove frakcije so se z naraščajočo globino v vseh profilih zmanjšale, kar kaže na relativno uravnotežene profile prsti. Vrednosti SOC (9,7-45,5 g•kg-1) so skladne z ugotovitvami drugih raziskav prsti v regiji. ROC in Fe/Al-SOC (51,5-65,8 % oziroma 68,0-73,3 %) sta bili glavni komponenti SOC, medtem ko je za Ca-SOC značilen bistveno nižji dele...

show abstract

Land-use impacts on profile distribution of labile and recalcitrant carbon in the Ili River Valley, northwest China

Cited by 38 publications

References 49 publications

Soil carbon and nitrogen stocks and fractions for improving soil quality and mitigating climate change

Soil carbon and nitrogen stocks and fractions for improving soil quality and mitigating climate change

Response of the Organic Carbon Fractions and Stability of Soil to Alpine Marsh Degradation in Zoige, East Qinghai-Tibet Plateau

Quantification and evaluation of soil organic carbon and its fractions: case study from the Classical Karst, SW Slovenia

Contact Info

Product

Resources

About