Sensitivity of soil organic carbon stocks and fractions to soil surface mulching in semiarid farmland

Luo, Shasha; Zhu, Lin; Liu, Jianliang; Bu, Lingduo; Yue, Shanchao; Shen, You-Gen; Li, Shiqing

doi:10.1016/j.ejsobi.2015.01.004

Cited by 71 publications

(33 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar results were also reported in semi-arid shrub ecosystems in a developed country [57], and a developing country [11]. However, some reported no increase, or a decrease of total SOC stock under other mulching practices, e.g., film mulching [12] and pebble mulching [13]. The addition of organic materials into soil under ST and GT lead to significantly higher SOC stock than other cover materials [58].…”

Section: Resultssupporting

confidence: 72%

“…The differences can be attributed to the variation in soil types in the other studies, as well as the use of different mulching materials and application rates. Some examples include 4.11 kg m –2 applied in a film mulching treatment, using plastic film to cover the soil surface [12], 3.96 kg m –2 in pebble mulching [13] and 5.48 kg m –2 in straw mulching treatments [56]. …”

Section: Resultsmentioning

confidence: 99%

“…Mulching practices have been introduced and proven to be effective in controlling soil erosion, reducing soil moisture evapotranspiration, surface runoff, and increasing the infiltration of water [10]. However, currently there are conflicting opinions regarding the effect of mulching on SOC concentrations and/or stocks due to contradictory results: enhancement [11], suppression [12], or no effect [13]. This uncertainty may be related to the complex processes of soil C sequestration [14], especially unclear for the dynamics of soil labile C fractions such as light organic carbon (LOC), dissolved organic carbon (DOC), particulate organic carbon (POC) and easily oxidizable organic carbon (EOC).…”

Section: Introductionmentioning

confidence: 99%

“…Loss of topsoil each year is up to 169 million tons, resulting in overall reduction in soil quality. Research regarding the use of mulch in agriculture has focused mainly on the physical properties of soil [10], soil erosion [12], environmental protection [12, 17] and soil fertility [13]. The processes of dynamic change in the organic carbon fractions of soil, particularly in the Danjiangkou reservoir area, have seldom been considered.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Dynamic Changes of Soil Surface Organic Carbon under Different Mulching Practices in Citrus Orchards on Sloping Land

Liu

Mohamed

et al. 2016

PLoS ONE

View full text Add to dashboard Cite

Mulching management has been used in many places all over the world to improve agricultural sustainability. However, the cycling of carbon in the soil under applications of mulch on sloping arable land is not yet fully understood. A four-year field experiment was carried out in Xiaofuling watershed of Danjiangkou reservoir in China. The object was to evaluate the effects of the application of straw mulch (ST) and grass mulch (GT) on dynamic changes in soil organic carbon and its fractions. Results showed that mulch applied on the soil surface increased the contents of SOC and its active fractions in the soil. Compared to the control without cover (CK), ST and GT treatments increased the contents of SOC, LOC, DOC, POC and EOC by 14.73%, 16.5%, 22.5%, 41.5% and 21%, respectively, in the 0–40 cm soil layer, and by 17%, 14%, 19%, and 30%, respectively, in the 0–100 cm soil layer. The contents of organic carbon and its active fractions decreased with increasing soil depth in all of the treatments. SOC was accumulated in the period of December to the following March. The contents of soil DOC and LOC were high in January to March, while the contents of soil POC and EOC were high in June to September. The relative contents of soil organic carbon fractions were POC > EOC > LOC > DOC over the four years. Straw mulching had no significant effect on the changes in soil organic carbon active fractions during the different periods. Based on this long-term field experiment in Danjiangkou reservoir, we found that straw mulching had a significant effect on soil, increasing SOC content and stock in slopping arable land, and that live grass mulching was more effective than rice straw mulching. We discuss possible optimal periods for the implementation of mulching practices on sloping land.

show abstract

Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic Changes of Soil Surface Organic Carbon under Different Mulching Practices in Citrus Orchards on Sloping Land

Liu

Mohamed

et al. 2016

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…In response to the importance of understanding the role of microorganisms in storing energy and nutrients and releasing them into soil, great attention has recently been devoted to estimating the microbial biomass of soil Azadbakht et (Kiikkila et al, 2014;Wei et al, 2015). As the role of soil microbial biomass in changing the soil organic matter has been definitely proved, soil microbial biomass is often employed in the circulation and mineralization of the organic precursors (Luo et al, 2015;Leite et al, 2010). Researchers apply the changes in microbial biomass carbon as an indicator of soil fertility and ecological conditions of the environment (Boerner et al, 2000).Such operations as tillage, fertilization, crop rotation, and application of various cover crop types, which affect the properties of soil, can influence soil microbial diversity, microbial dynamics, microbial biomass, and status of soil microorganisms (Kumar et al, 2014;Zhang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Chemical and Non-Chemical Weed Management Methods on Chemical and Biological Properties of Soil in Potato Cultivation in Ardabil Province, Iran

Azadbakht¹

2017

Appl Ecol Env Res

View full text Add to dashboard Cite

Abstract. The present study explores the effect of weed management practices on the properties of soil, including microbial biomass carbon (MBC), soil organic carbon (SOC), basal respiration (BR), induced respiration (IR), and microbial quotient (MQ) in potato cultivation at two agricultural research stations of Alarogh and Samian in Ardabil Province, Iran. We carried out a randomized complete block design with three replications. The treatments were as follows: 1) Trifluralin herbicide (TR), 2) Metribuzin herbicide (ME), 3) cultivator practice (CU), 4)wheat straw mulch (WH), 5) canola straw mulch (CA), 6) black plastic mulch (BPL), 7) transparent plastic mulch (TPL), 8) weed infested (WI), and 9) weed free (WF). Soil sampling was conducted at three stages. The first stage included control index sampling (CIS). The treatments employed in this research caused significant differences in the rates of MBC, SOC, BR, IR, and MQ. The highest rate of MBC was observed in WH and CA at the second and the third soil sampling stages, respectively, compared with other experimental treatments. WH and CA increased the rate of MBC in the second and the third sampling stages in comparison with CIS. The highest SOC was observed in WH and CA at the second and the third soil sampling stages. The highest BR at the second sampling stage was related to CA, WH, and BPL; however, the lowest BR at the second soil sampling stage was related to TR. Furthermore, the highest BR rate at the third sampling stage belonged to WH, CA, and ME. Nevertheless, IR had the highest rate in WH and CA and the lowest rate in the CU at the second sampling stage. Hence, we found that applying plant straw mulch treatments to cover the soil surface for weed management, compared to other methods employed in the experiment, had more positive effects on the biological characteristics measured.

show abstract

Effect of chain extrender on the compatibility, mechanical and gas barrier properties of poly(butylene adipate‐co‐terephthalate)/poly(propylene carbonate) bio‐composites

Zhao

Xie

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

Bio-composites consisting of poly(butylene adipate-co-terephthalate) (PBAT), poly(propylene carbonate) (PPC) and epoxy chain extender ADR 4468 were fabricated via melt blending using a torque rheometer. The relationship of the torque, melt viscosity, and molecular weight of the bio-composites was established via polymeric liquid theory to estimate the real-time chain extension reaction rate under different ADR contents. At the meantime, rheological behavior, thermal and mechanical properties, morphologies, gas barrier properties of the PBAT/PPC/ADR bio-composites were systematically characterized. The corresponding results revealed that the water vapor transmission rate (WVTR) reduced by 50% under 30 phr (parts per hundreds of resin) PPC content. The addition of ADR is beneficial to improve the mechanical properties, thermal stability and phase dispersion of PBAT/PPC without affecting the water barrier property. With 3 phr ADR, the tensile stress and elongation at break were increased from 19.5 MPa and 1184% to 26.9 MPa and 1443%, respectively. In addition, the data of the torque rheometer revealed that the chain extension reaction rate and the melt viscosity was increased with the increasing ADR content, but the reaction rate was reduced with the excessive viscosity.

show abstract

Sensitivity of soil organic carbon stocks and fractions to soil surface mulching in semiarid farmland

Cited by 71 publications

References 41 publications

Dynamic Changes of Soil Surface Organic Carbon under Different Mulching Practices in Citrus Orchards on Sloping Land

Dynamic Changes of Soil Surface Organic Carbon under Different Mulching Practices in Citrus Orchards on Sloping Land

The Effect of Chemical and Non-Chemical Weed Management Methods on Chemical and Biological Properties of Soil in Potato Cultivation in Ardabil Province, Iran

Effect of chain extrender on the compatibility, mechanical and gas barrier properties of poly(butylene adipate‐co‐terephthalate)/poly(propylene carbonate) bio‐composites

Contact Info

Product

Resources

About