| 引用本文: | 高继伟,谢英荷,李廷亮,等.不同培肥措施对矿区复垦土壤活性有机碳的影响[J].灌溉排水学报,2018,37(5):6-12. |
| GAO Jiwei,XIE Yinghe,LI Tingliang,et al.不同培肥措施对矿区复垦土壤活性有机碳的影响[J].灌溉排水学报,2018,37(5):6-12. |
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| 摘要: |
| 【目的】了解矿区复垦土壤活性有机碳随培肥年限的变化规律。【方法】依托山西省襄垣县采煤塌陷区复垦土壤长期定位试验基地，研究了不同复垦年限（1、3、7 a）下不施肥（CK）、单施化肥（CF）、单施有机肥（M）、有机无机配施（MCF）4种配施措施对土壤水溶性有机碳（WSOC）、可溶性有机碳（DSOC）、易氧化态有机碳（ROOC）和轻组有机碳（LSOC）4种活性有机碳量的影响。【结果】随着复垦年限的增加，采煤塌陷区复垦土壤各活性有机碳量显著提高，4种活性有机碳量之间的大小顺序总体表现为DSOC>LSOC>ROOC>WSOC。经7 a复垦，水溶有机碳、可溶性有机碳、易氧化态有机碳和轻组有机碳较复垦1 a土壤分别提高20%～100%、10.31%～68.29%、60%～186.83%和15.29%～141.28%。不同处理间，单施有机肥对WSOC、DSOC、ROOC和LSOC量的增加作用优于有机无机配施和单施化肥，与不施肥相比，增加幅度分别为8.33%～166.67%、19.78%～48.74%、23.7%～121.76%和38.24%～189.29%。4种活性有机碳之间均具有显著相关性，其中DSOC与ROOC和LSOC之间的相关系数分别达0.952 4和0.901 8。【结论】总体上，采煤塌陷区表土剥离覆土型复垦土壤，在等养分量投入的情况下，单施有机肥有利于土壤活性有机碳的增加和土壤养分循环。 |
| 关键词: 复垦土壤； 水溶性有机碳； 可溶性有机碳； 易氧化态有机碳； 轻组有机碳 |
| DOI：10.13522/j.cnki.ggps.2017.0652 |
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| Effects of Different Fertilizations on Organic Carbon Activity Following Remediation of a Coal Tailing |
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GAO Jiwei, XIE Yinghe, LI Tingliang, JIAO Huan, LI Yan, HE Bing, LI Shun
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College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China; .National Demonstration Center for Agricultural Resources and Environment Experimental Teaching, Shanxi Agricultural University, Taigu 030801, China
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| Abstract: |
| 【Objective】 Improving soil fertility is an effective way to remediate mining tailings and the purpose of this work is to investigate the change in organic carbon activity in a coal tailing following its remediation by different fertilization methods. 【Method】 Field experiment was conducted on a long-term experimental site to examine the effects of different fertilizations on change in activity of four organic carbons: water soluble organic carbon (WSOC), soluble organic carbon (DSOC), easy-oxidized organic carbon (ROOC) and light fraction organic carbon (LSOC), following remediation of the coal tailing formed due to collapse of a coal mining in Xiangyuan of Shanxi Province. We considered four fertilizations: single fertilizer application (CF), single organic manure application (M), combination of fertilizer and organic manure (MCF); the control was no fertilization. The carbon activity was measured between one to seven years after the remediation. 【Result】 The contents of the active organic carbons increased significantly as time elapsed in the order DSOC>LSOC>ROOC>WSOC. Seven years after the remediation, the content of water soluble organic carbon, soluble organic carbon, easily-oxidized organic carbon and light fraction organic carbon was 20%~100%, 10.31%~68.29%, 60%~186.83% and 15.29%~ 141.28% respectively, higher than those measured one year after the remediation. Among all treatments, a single manure application was most efficient, improving, the content of WSOC, DSOC, ROOC and LSOC by 8.33%~166.67%, 19.78%~48.74%, 23.7%~121.76% and 38.24%~189.29%, respectively, compared to the CK. The four active organic carbons were correlated, with a correlation coefficient for ROOC and LSOC, and ROOC and DSOC being 0.952 4 and 0.901 8, respectively. 【Conclusion】 When remediating coal tailing by removing the topsoil, an single manure application was most efficient to enhance organic carbon activity and improve nutrients cycling compared with other fertilizations if the amount of nutrients applied to the tailing was the same. |
| Key words: reclaimed soil; water-soluble organic carbon; soluble organic carbon; easily oxidized organic carbon; light fraction organic carbon |
