1.School of Earth and Environment,Anhui University of Science & Technology,Huainan,Anhui 232001,China
2.Anhui Province Engineering Laboratory of Water and Soil Resources Comprehensive Utilization and Ecological;Protection in High Groundwater Mining Area,Anhui University of Science & Technology,Huainan,Anhui 232001,China
Objective The effects of tartaric acid (TA) as an amendment on the respiration of reclaimed soil were investigated in order to reveal the dynamic variation patterns of soil respiration under TA addition and its interactive effects with environmental factors. Methods Taking the reclaimed soil from the Panyi mine reclamation area in northwestern Huainan City, Anhui Province as the research object, a gradient-controlled experimental design was adopted. Gradients of TA application rate and concentration were systematically set, coupled with dual environmental factor gradients of temperature and soil moisture content, so as to conduct long-term continuous in-situ monitoring of the respiration rate of reclaimed soil. Results ① Compared with the control group (TA application rate = 0), TA addition at a rate lower than 675 mg/kg promoted the respiration of reclaimed soil. In contrast, TA addition at a rate higher than 675 mg/kg exhibited an inhibitory effect on respiration of reclaimed soil. ② When soil temperature and moisture content changed, the daily cumulative CO2 respiration of reclaimed soil showed a trend of first rapidly increasing and then decreasing during the incubation period after TA addition. The promoting effect of TA on respiration of reclaimed soil followed the order of temperature groups: 35 ℃ TA > 25 ℃ TA > 15 ℃ TA, and the order of moisture content groups: 25% TA > 15% TA > 35% TA. At 35 ℃, the average daily cumulative respiration over the 20-day incubation was 11.03 times higher than that of the CK group, while at 25% soil moisture content, it was 5.14 times higher than that of the CK group. ③ Redundancy analysis (RDA) indicated that TA concentration was the key factor affecting the respiration of reclaimed soil, followed by temperature. Conclusion Appropriate addition of TA can significantly increase the CO2 respiration rate of reclaimed soil, drive the dynamic changes of soil nutrient content, and optimize the physicochemical and biological properties of reclaimed soil, thereby contributing to the long-term stable utilization of reclaimed soil.
文献参数: 张治国, 汪啸宇, 郑永红, 等.酒石酸添加对复垦土壤呼吸作用的影响[J].水土保持通报,2026,46(4):278-285. Citation:Zhang Zhiguo, Wang Xiaoyu, Zheng Yonghong, et al. Effects of tartaric acid addition on respiration of reclaimed soil [J]. Bulletin of Soil and Water Conservation,2026,46(4):278-285.
在培养结束后,土壤酸碱度(pH值)采用电位法测定(HJ 962—2018,梅特勒 FE28酸度计),土壤有机质(SOM)采用元素分析仪法测定(NY/T 4606—2025,Elementar Vario EL cube元素分析仪),土壤碱解氮(AN)采用碱解扩散法测定(LY/T 1228—2015),土壤有效磷(AP)采用碳酸氢钠浸提—钼锑抗比色法分光光度计法(HJ 704—2014,普析通用TU-1950紫外可见分光光度计),土壤速效钾(AK)采用乙酸铵浸提-电感耦合等离子体发射光谱法测定(DB63/T 1820—2020,Avio 550 max ICP-OES)。
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