文章基本信息

标题：CARBON DYNAMICS IN SALT - AFFECTED CALCAREOUS SOILS IN SOUTH EAST TURKEY
本地全文：下载
作者：Ahmet Celik ; Erdal Sakin ; Hamza Yalcin 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2019
卷号：28
期号：9
页码：6749-6756
语种：English
出版社：PSP Publishing
摘要：Secondary salinity is a significant problem in irrigated agricultural lands. Investigation of the amount of the CO_2-C (g kg~(-1) day~(-1)) quantity released to atmosphere through the application of different carbon resources into soil that is under the effect of secondary salinity is highly important in terms of global warming. This study has been conducted in a laboratory environment to measure the amount of CO_2-C (g kg~(-1) day~(-1)) released to atmosphere for a period of 15 weeks by soil under the effect of different electrical conductivity (EC) (EC:0-2-4-6 dS m~(-1)) and applied with corn biochar (CBC) and corn stalk wastes (CSW). Both on a daily basis and cumulatively, when compared with the control group (C_0) at the end of the study, the amount of CO_2-C released by soil applied with corn biochar and salt concentration (CBC+EC) has been observed to be lesser than that released by soils applied with corn stalk wastes and salt concentration (CSW+EC). When the amount of CO_2-C released to atmosphere is compared with C_0 with the increase in EC values, a reduction has been observed in the emission level of soils applied with both CBC and CSW. This reduction has been observed at a higher level in soils applied with CBC+EC. As a result of the application of CBC+EC, dosages, weeks and CBC+ECx week interaction are observed to have a significant effect on CO_2-C emission, on the basis of repeated measures analysis of variance result (p<0.05). Following the CSW+EC application, weeks are observed to have a significant effect on CO_2-C emission (p<0.05), while CSW+ECx week interaction is observed to have no significant effect (p>0.05). According to CBC+EC salt application dosages and in terms of the effect on CO_2-C emission, and based on Tukey HSD multiple-comparison test, CBC+EC_0 dose (2.05±0.19a) has been observed to be highest, while CBC+EC_6 (1.58±0.13b) dosage has been observed to be the lowest (p<0.05). CSW+EC_4 (4.18±0.41a) the highest dosage, while CSW+EC_0 (3.63±0.43b) the lowest result dosage yielded (p<0.05). Looking at Tukey HSD multiple- comparison tests; CO_2-C release from the CBC+EC applied soil was highest on 3~(rd) week (3.12±0.16a), while the lowest figure was on the 15~(th) week (0.21±0.02g) (p<0.05). Then in soils applied with CSW+EC, the highest figure has been observed on the 3~(rd) week (7.07±0.11 A), while the lowest has been observed on the 15~(th) week (0.46±0.07D) (p<0.05).
关键词：Salt-affected soil;electricity conductivity;corn biochar;corn stalks waste;salt doses