Arid Zone Research ›› 2019, Vol. 36 ›› Issue (6): 1494-1501.

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Biochar Yield and Physicochemical Properties of Five Halophyte Species

MAO Ming-yue1, 2, ZHAO Zhen-yong1, WANG Shou-le1, 2, TIAN Chang-yan1, ZHANG Ke1, GONG Jiang-ping3, ZHANG Zheng3, JING Wei-min1   

  1. 1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Karamay City Architecture Planning and Design (Institution) Co. Ltd, Karamay 834000, Xinjiang, China

  • Received:2018-12-19 Revised:2019-06-10 Online:2019-11-15 Published:2019-11-15

Abstract: The purposes of this research was to figure out the difference of biochar yield and physicochemical properties among five halophyte species, i.e. the Suaeda salsa, Salicornia europaea, Suaeda altissima, Atriplex aucheri and Halostachys caspica under 500 ℃ carbonization condition. The results showed that the biochar yield was positively correlated with the ash content of raw material, but negatively correlated with the lignin content of raw material (P<0.01). There was a significant correlation between the raw material and the biochar in ash content and total carbon content (P<0.01). In addition, the contents of elements in the raw materials determined the amount of elemental content in biochar. Noticeably, carbonization increased effectively the ash content in five halophyte species, it was increased by 132.45% in S. salsa, 91.62% in S. europaea, 121.79% in S. altissima, 169.24% in A. aucheri and 67.22% in H. caspica, respectively. Besides,the amount of sodium and potassium ions abstracted by distilled water was increased with the increase of ash content. Moreover, carbonization could effectively increase the pH (70.76%-82.33%) and EC (68.19%-144.96%) values of halophyte species. This study could be referred in researching the biochar yield and improving acidic soil by the biochar of halophytes.

Key words: halophyte; biochar, yield, ash, physicochemical property