郑利剑,马娟娟,郭飞,任荣,郭向红,孙西欢.基于水稳定同位素技术的生物炭对土壤持水性影响分析[J].农业机械学报,2016,47(6):193-198,186.
Zheng Lijian,Ma Juanjuan,Guo Fei,Ren Rong,Guo Xianghong,Sun Xihuan.Impact of Biochar Addition on Soil Water Retention Based on Water Stable Isotopes[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(6):193-198,186.
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基于水稳定同位素技术的生物炭对土壤持水性影响分析   [下载全文]
Impact of Biochar Addition on Soil Water Retention Based on Water Stable Isotopes   [Download Pdf][in English]
投稿时间:2015-11-25  
DOI:10.6041/j.issn.1000-1298.2016.06.025
中文关键词:  生物炭  稳定同位素  土壤持水性  抽提技术
基金项目:国家自然科学基金项目(51579168)、高等学校博士学科点专项科研基金项目(20111402120006、20121402110009)和山西省科技攻关项目(20110311018—1、20140311016—6)
作者单位
郑利剑 太原理工大学 
马娟娟 太原理工大学 
郭飞 太原理工大学 
任荣 太原理工大学 
郭向红 太原理工大学 
孙西欢 太原理工大学山西水利职业技术学院 
中文摘要:以不同生物炭配比的土壤样品为研究对象,通过低温真空抽提和稳定同位素光谱技术,进行不同抽提时间下的土壤水稳定同位素分析,采用绘制土壤抽提曲线和计算抽提贡献率的方法,探讨生物炭对土壤持水性的影响。结果表明,低温真空抽提下,砂土的最短抽提时间(Tmin)为30min,壤土为45min,粘土为60min。土壤持水性的变化会导致抽提过程中水稳定同位素值、Tmin和抽提贡献率发生变化,通过分析不同生物炭配比下土壤的Tmin、水稳定同位素分馏情况以及计算贡献率可得出,生物炭显著影响砂土持水性,且与生物炭添加量呈线性正相关;而对壤土和粘土的持水性有一定影响,但过量或过少则不明显,壤土对生物炭更为敏感。
Zheng Lijian  Ma Juanjuan  Guo Fei  Ren Rong  Guo Xianghong  Sun Xihuan
Taiyuan University of Technology,Taiyuan University of Technology,Taiyuan University of Technology,Taiyuan University of Technology,Taiyuan University of Technology and Taiyuan University of Technology;Shanxi Conservancy Technical College
Key Words:biochar  stable isotope  water retention  extraction technique
Abstract:Application of biochar in soil is being increasingly discussed as a mean to sequestrate carbon and improve chemical and physical properties for plant growth. Compared with the studies assessing the impact on water retention, little research has been published elucidating the mechanisms which were responsible for the change of water stable isotope extraction time. The impacts of biochar on water retention of three types soil (sandy, loam and clay) with different biochar application rates were investigated by extraction timing curve and mean proportional contribution. The mixtures were extracted by cryogenic vacuum distillation and analyzed with isotope ratio infrared spectroscopy. The results showed that the minimum extraction time (Tmin) was 30min for sandy soil, 45min for loam soil and 60min for clay soil. The biochar application rates changed the Tmin, as well as the water hydrogen isotope value and mean proportional contribution. The isotopic composition of extracted sandy soil water was more depleted in 2H with the increase of biochar application rates at Tmin, while the extent of deviation to the standard values displayed peak for loam and clay soil water hydrogen isotope. The results indicated that biochar application rate was directly correlated to the water retention of sandy soil, and it was increased with the increase in water retention of loam and clay soils, but not all biochar application rates had the same impact. The loam soil was more sensitive than the clay soil to the biochar application.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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