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Importance of agriculture and crop residues in carbon sequestration and nutrient enrichment at agricultural farms of East Kolkata Wetland area, a Ramsar site

机译:拉姆萨尔(Ramsar)站点东加尔各答湿地地区的农业农场中,农业和农作物残留物对固碳和营养富集的重要性

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摘要

In the present study, species-specific carbon sequestration efficiency of eight most extensively cultivated agricultural plants in East Kolkata Wetland (EKW) ecosystem has been measured. They altogether sequester about 6343.7 kg ha(-1) C, from which 4030 kg ha(-1) C is exported from the EKW as edible agricultural product and 2313.6 kg ha(-1) C is retained in the field as residual parts. Also, the crop residue of these eight plants contains 373.62 kg ha(-1) N, 3.84 kg ha(-1) Na, 7.95 kg ha(-1) K, 1.85 kg ha(-1) Ca, 0.21 kg ha(-1) Mg and 2.41 kg ha(-1) Fe, 0.36 kg ha(-1) Mn and 0.17 kg ha(-1) Zn, which enrich the soil micronutrient and may decrease the fertilizer cost. The present study is also aimed at the construction of a beneficial and sustainable crop management system, allowing farmers to get carbon credit from the practice.
机译:在本研究中,已经测量了东加尔各答湿地(EKW)生态系统中八种最广泛种植的农业植物的特定物种碳固存效率。他们总共封存了约6343.7 kg ha(-1)C,从EKW中以食用农产品的形式出口了4030 kg ha(-1)C,在田间保留了2313.6 kg ha(-1)C作为残留物。此外,这八种植物的农作物残留量包含373.62 kg ha(-1)N,3.84 kg ha(-1)Na,7.95 kg ha(-1)K,1.85 kg ha(-1)Ca,0.21 kg ha( -1)镁和2.41千克ha(-1)铁,0.36千克ha(-1)锰和0.17千克ha(-1)锌,它们丰富了土壤微量营养元素并可能降低肥料成本。本研究还旨在建立一个有益且可持续的作物管理系统,使农民从实践中获得碳信用。

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