西北林学院学报2024，Vol.39Issue(5)：187-194,8.DOI:10.3969/j.issn.1001-7461.2024.05.23
生物炭对荒漠风沙土水力性质和抗风蚀性的影响
Effects of Biochar on Hydraulic Properties and Wind Erosion Resistance of Desert Aeolian Soil
摘要
Abstract
To investigate the effects of biochar addition on the hydraulic properties and wind erosion resist-ance of desert aeolian soil,corn straw biochar prepared at 500 ℃ was used to investigate the effects of bio-char addition(mass ratio:0％,0.5％,1％,2％and 4％)on the soil pore distribution,soil hydraulic proper-ties and soil resistance to wind erosion.Soil porosity,soil hydraulic characteristics and soil wind erosion re-sistance indexes were analyzed.At the same time,soil specific surface area(SSA),cation exchange capacity(CEC),organic carbon(SOC),total nitrogen(TN)and carbon to nitrogen ratio(C/N)were determined,and then the correlation analysis was carried out among these indexes.The results suggested that 1)bio-char addition changed the soil pore structure,thus improving the water retention ability of desert aeolian soil.Compared with the control,2％and 4％of biochar application rates significantly increased the saturat-ed water content(10.28％,20.72％),field water capacity(32.03％,65.87％),wilting water content(102.65％,187.42％)and plant available water content(13.30％,33.33％).2)Biochar application could enhance the wind erosion resistance of desert aeolian soil.With the increase of biochar application rate,the physical stability index of desert aeolian soil increased by 12.91％-105.51％,and the erodibility factor de-creased by 17.15％-86.24％.3)Biochar addition rate,SOC,TN,C/N,CEC,SSA were significantly corre-lated with soil water characteristics and soil wind erosion resistance indexes.It is recommended to add more than 2％of corn straw biochar application rate to control wind erosion desertification land.关键词
土壤孔隙结构/土壤水力性质/土壤抗风蚀能力/风沙土/生物炭Key words
soil pore size distribution/soil hydraulic property/soil resistance to wind erosion/desert aeolian soil/biochar分类
环境科学引用本文复制引用
邱晓娜,付贵全,张雯,徐高兴..生物炭对荒漠风沙土水力性质和抗风蚀性的影响[J].西北林学院学报,2024,39(5):187-194,8.基金项目
国家重点研发计划项目(2022YFF1302505) （2022YFF1302505）
甘肃省重点研发项目(23YFFA0025) （23YFFA0025）
甘肃省重大项目(21ZD4FA010). （21ZD4FA010）
