skip to main content
Idioma:

Effects of long‐term straw return on soil organic carbon storage and sequestration rate in North China upland crops: A meta‐analysis

Berhane, Medhn ; Xu, Miao ; Liang, Zhiying ; Shi, Jianglan ; Wei, Gehong ; Tian, Xiaohong

Global change biology, 2020-04, Vol.26 (4), p.2686-2701 [Periódico revisado por pares]

England: Blackwell Publishing Ltd

Texto completo disponível

Citações Citado por
  • Título:
    Effects of long‐term straw return on soil organic carbon storage and sequestration rate in North China upland crops: A meta‐analysis
  • Autor: Berhane, Medhn ; Xu, Miao ; Liang, Zhiying ; Shi, Jianglan ; Wei, Gehong ; Tian, Xiaohong
  • Assuntos: Agricultural land ; Agricultural management ; Agricultural production ; Biological fertilization ; Carbon ; Carbon capture and storage ; Carbon sequestration ; Cereal crops ; Climate change ; Climate change mitigation ; Compound fertilizers ; Corn ; Crop production ; Crop yield ; cropping system ; Cropping systems ; Crops ; Double cropping ; Duration ; experiment duration ; Fertility ; Fertilization ; Fertilizers ; Field tests ; long‐term experiment ; Meta-analysis ; Mineral fertilizers ; Mitigation ; Organic carbon ; Organic soils ; Potassium ; Soil ; Soil analysis ; Soil fertility ; Soil management ; soil organic carbon stock ; Soil types ; Soils ; Stocks ; Straw ; straw return ; Wheat
  • É parte de: Global change biology, 2020-04, Vol.26 (4), p.2686-2701
  • Descrição: Soil organic carbon (SOC) is essential for soil fertility and climate change mitigation, and carbon can be sequestered in soil through proper soil management, including straw return. However, results of studies of long‐term straw return on SOC are contradictory and increasing SOC stocks in upland soils is challenging. This study of North China upland agricultural fields quantified the effects of several fertilizer and straw return treatments on SOC storage changes and crop yields, considering different cropping duration periods, soil types, and cropping systems to establish the relationships of SOC sequestration rates with initial SOC stocks and annual straw C inputs. Our meta‐analysis using long‐term field experiments showed that SOC stock responses to straw return were greater than that of mineral fertilizers alone. Black soils with higher initial SOC stocks also had lower SOC stock increases than did soils with lower initial SOC stocks (fluvo‐aquic and loessial soils) following applications of nitrogen‐phosphorous‐potassium (NPK) fertilizer and NPK+S (straw). Soil C stocks under the NPK and NPK+S treatments increased in the more‐than‐20‐year duration period, while significant SOC stock increases in the NP and NP+S treatment groups were limited to the 11‐ to 20‐year period. Annual crop productivity was higher in double‐cropped wheat and maize under all fertilization treatments, including control (no fertilization), than in the single‐crop systems (wheat or maize). Also, the annual soil sequestration rates and annual straw C inputs of the treatments with straw return (NP+S and NPK+S) were significantly positively related. Moreover, initial SOC stocks and SOC sequestration rates of those treatments were highly negatively correlated. Thus, long‐term straw return integrated with mineral fertilization in upland wheat and maize croplands leads to increased crop yields and SOC stocks. However, those effects of straw return are highly dependent on fertilizer management, cropping system, soil type, duration period, and the initial SOC content. Incorporation of long‐term straw from wheat–maize double‐cropping system combined with nitrogen‐phosphorous‐potassium (NPK) fertlizers (NPK+S) and NPK alone increases soil organic carbon (SOC) stock in the duration more‐than‐20‐year next to NPK fertilizer with manure addition (NPK+M). Straw return affected SOC level changes significantly, compared to SOC changes from NP and NPK fertilizer treatments alone. Application of NP fertilizers did not show significant SOC change, while unfertilized plots (CK) maintain only the initial SOC in longer periods. SOC sequestration rate significantly correlated with straw carbon input.
  • Editor: England: Blackwell Publishing Ltd
  • Idioma: Inglês
Links
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.