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http://dx.doi.org/10.17137/korrae.2016.24.3.83

Estimation of Carbon Sequestration and Its Profit Analysis with Different Application Rates of Biochar during Corn Cultivation Periods  

Shin, JoungDu (Department of Climate Change & Agro-ecology, National Institute of Agricultural Sciences)
Choi, Yong-Su (Department of Climate Change & Agro-ecology, National Institute of Agricultural Sciences)
Lee, SunIl (Department of Climate Change & Agro-ecology, National Institute of Agricultural Sciences)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.24, no.3, 2016 , pp. 83-90 More about this Journal
Abstract
Despite the ability of biochar to enhance soil fertility and to mitigate greenhouse gas, its carbon sequestration and profit analysis with arable land application have been a few evaluated. This study was conducted to estimate carbon sequestration and to evaluate profit of greenhouse gas mitigation during corn cultivation periods. For the experiment, the biochar application rates were consisted of pig compost(non application), 2,600(0.2%), 13,000(1%), and 26,000(2%) kg/ha based on pig compost application. For predicting soil carbon sequestration of biochar application, it was appeared to be linear model of Y = 0.5523X - 742.57 ($r^2=0.939^{**}$). Based on this equation, soil carbon sequestration by 0.2, 1 and 2% biochar application was estimated to be 1,235, 3,978, and 14,794 kg/ha, and their mitigations of $CO_2$-eq. emissions were estimated to be 4.5, 14.6, and 54.2 ton/ha, respectively. Their profits were estimated at $14.6 for lowest and $452 for highest. In Korea Climate Exchange, it was estimated that the market price of $CO_2$ in corn cultivation periods with 0.2, 1 and 2% biochar application was $35.6, $115.3 and $428.2 per hectare, respectively. For the plant growth response, it was observed that plant height and fresh ear yield were not significantly different among the treatments. Therefore, these experimental results might be fundamental data for assuming a carbon trading mechanism exists for biochar soil application in agricultural practices.
Keywords
Biochar; Compost; Greenhouse gas mitigation; Soil carbon sequestration;
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