2022
DOI: 10.1111/gcbb.12990
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Marginal land conversion to perennial energy crops with biomass removal enhances soil carbon sequestration

Abstract: Marginal land conversion to perennial energy crops can provide biomass feedstocks and climate change mitigation. However, the effect of perennial energy crop cultivation on soil organic carbon (SOC) sequestration and its underlying mechanism in marginal land still remains incomplete. Here, SOC turnover, stability, and its potential sequestration were evaluated based on 10 years of land use change from C3 grass‐dominated marginal land to C4 energy crops Miscanthus and switchgrass cultivation. The naturally occu… Show more

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Cited by 23 publications
(7 citation statements)
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“…This was further supported by the positive correlation between four enzymes (i.e., BG, BX, CE, and ACP) and TN and NH 4 + and NO 3 − (Figure 4b). Concurrently, N can change the nutrient distribution ratio and indirectly affect soil enzyme activities (Xu et al, 2022). Also, soil pH influenced enzyme activities and enzymatic stoichiometry (Figure 4a).…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…This was further supported by the positive correlation between four enzymes (i.e., BG, BX, CE, and ACP) and TN and NH 4 + and NO 3 − (Figure 4b). Concurrently, N can change the nutrient distribution ratio and indirectly affect soil enzyme activities (Xu et al, 2022). Also, soil pH influenced enzyme activities and enzymatic stoichiometry (Figure 4a).…”
Section: Discussionmentioning
confidence: 99%
“…The activities of soil enzymes, β‐1,4‐glucosidase (BG), β‐ D ‐xylopyranoside (BX), β‐ D ‐celliobiosidase (CE), β‐1,4‐ N ‐acetylglucosaminidas (NAG), L ‐leucine aminopeptidase (LAP), and acid phosphatase (ACP), were quantified with fluorogenically labelled substrates (Nayab et al, 2022; Xu et al, 2022; Zhou et al, 2021). In brief, add 50 mL distilled water to 1 g fresh soil, shake for 0.5 hr, and then aspirate 50 μL of the suspension.…”
Section: Methodsmentioning
confidence: 99%
“…These plants are considered perennial energy, whose root systems efficiently sequester SOC through a rapid rate of renovation of the SOC. In other words, the new C4-derived C replaced the old C3-C at a rate sufficient to offset the losses (Xu et al, 2022). The SOM content derived from C4 cultures has a faster decomposition than C3.…”
Section: Soil C Contents and Stocksmentioning
confidence: 99%
“…Controlled release N fertilizer has advantages with respect to maintaining and increasing leaf greenness as a result of providing continuous N supplement, which indirectly increases carbon dioxide assimilation for the remobilization of non‐structural carbohydrates to grain organs 5,15 . Both controlled and field experiments suggest that supplementation with controlled release N fertilizer increases cereal crop morphology traits, gas exchange attributes, and soil inorganic N and organic C content over the reproductive period 16‐18 . Short‐term straw returning fertilization effects on crop yields are likely to reduce because of the uncertainty in the quality and quantality of straw decomposition to nutrients over the changing growing season 19,20 …”
Section: Introductionmentioning
confidence: 99%
“…5,15 Both controlled and field experiments suggest that supplementation with controlled release N fertilizer increases cereal crop morphology traits, gas exchange attributes, and soil inorganic N and organic C content over the reproductive period. [16][17][18] Short-term straw returning fertilization effects on crop yields are likely to reduce because of the uncertainty in the quality and quantality of straw decomposition to nutrients over the changing growing season. 19,20 Conventional N urea application practices (such as multiple application and subsurface placement) enhance leaf development, N allocation to harvest organs and decrease the N losses to environment.…”
Section: Introductionmentioning
confidence: 99%