干旱区生态环境知识资源中心(Arid): Characterization of biochars produced from seven biomasses grown in three different climate zones

Arid

	Characterization of biochars produced from seven biomasses grown in three different climate zones
	Yang Fang; Lee Xinqing; Wang Bin
来源期刊	Chinese Journal of Geochemistry
ISSN	1000-9426
出版年	2015
卷号	34 期号:4 页码:592-600
英文摘要	The characterization of biochars produced from seven feedstocks (four crop straws: cotton stalks, wheat stalks, rape stalks and corn stalks; three hardwoods: Salix babylonica Linn, Platanus orientalis and Robinia pseudoacacia) grown in three different climate zones (arid, semiarid and humid regions) were investigated for their potential as soil amendments. The results show that ash content, K~+, Ca~(2+), Mg~(2+), CEC, Cl~-, pH, and salinity are generally higher in the straw biochars (STR-BCs) than the hardwood biochars (HW-BCs). However, there is no significant distinction between the two categories of biochars in terms of surface acidity, surface basicity, TC, available phosphorus (A-P) or NH_4~+-N. The contents of K~+, Na~+, Ca~(2+), Mg~(2+), EC, Cl~- of all 21 biochars increase in semiarid and arid regions in comparison to humid regions, while ash content, TC, CEC, pH, surface acidity, surface basicity, A-P and NH_4~+-N show no correlation to the climate. From the perspective of K~+, CEC and the remediation of acidified soils, STR-BCs are preferable over HW-BCs as a soil amendment, while HW-BCs are more suitable than STRBCs in soils with a saline problem. EC, Na~+ and Cl~- increase with the water stress of the climatic regions, and the high saline ions of biochar in the arid regions indicate that biochars produced from local biomass, especially from crop residues, are at a high risk of exacerbating soil salinization. The big difference in the critical chemical properties, such as the saline ions, stresses that biochar should be taken on a regional basis as well as a biomass basis, with the general assumption that whether biochar as a soil amendment is good or bad is groundless.
英文关键词	Biochar Crop straw Hardwood Characterization Soil amendment
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5572795
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335576
作者单位	Yang Fang, Institute of Geochemistry, Chinese Academy of Sciences, State Key Laboratory of Environmental Geochemistry, Guiyang, Guizhou 550002, China.; Lee Xinqing, Institute of Geochemistry, Chinese Academy of Sciences, State Key Laboratory of Environmental Geochemistry, Guiyang, Guizhou 550002, China.; Wang Bin, Institute of Geochemistry, Chinese Academy of Sciences, State Key Laboratory of Environmental Geochemistry, Guiyang, Guizhou 550002, China.
推荐引用方式 GB/T 7714	Yang Fang,Lee Xinqing,Wang Bin. Characterization of biochars produced from seven biomasses grown in three different climate zones[J],2015,34(4):592-600.
APA	Yang Fang,Lee Xinqing,&Wang Bin.(2015).Characterization of biochars produced from seven biomasses grown in three different climate zones.Chinese Journal of Geochemistry,34(4),592-600.
MLA	Yang Fang,et al."Characterization of biochars produced from seven biomasses grown in three different climate zones".Chinese Journal of Geochemistry 34.4(2015):592-600.