Effect of Acid Deposition on the Chemical Properties of Soil Organic matter

酸沉降对土壤有机质化学性质的影响

• 批准号: 02640463
• 负责人: TAKAMATSU Takejiro
• 金额: $ 0.32万
• 依托单位: National Institute for Environmental Studies
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02640463/
• 关键词: Acid deposition; Acid soil; Volcano; Soil organic matter; Humic acid; Chemical states of sulfur

Thirteen acid soils(A_<0+1>, 0-15cm)were collected from volcanic regions of Japan(pH(H_2O)=2.81-3.93), and 9 reference soils from the regions unaffected by volcanic acids(pH=4.10-4.74). Hunic acids were extracted from those soils with 0.1M NAOH and precipitated by acidification(pH=2, HCl). After the dissolution and precipitationprocedure had been repeated 5 times, the humic acids were treated with 2% HF to reduce the ash content. and then washed with CHCl_3 to eliminate any elemental S. The resulting humic acids were freezedried and subjected to the S-analyses. The sulfur species determined in the humic acids were total S, ester sulfate-S, sulfonate-S, sulfhydryl-S, inorganic S, and C-bonded S. The C-bonded S included C-S-C. C-S-S-C, and non-ionic S-containing groups. The results obtained in this research are summarized as follows : 1)The S contents of of acid soils(0.22<plus-minus>0.10%)were clearly higher than those of reference soils(0.11<plus-minus>0.03%), and increased rapidly from ca. 0.15% to ca. 0.40% with decreasing soil PH(from 3.5 to 2.8). 2)The humic acids(AHA)from acid soils showed higher concentrations of total S(0.56<plus-minus>0.21%), total organic S(0.53<plus-minus>0.19%), and sulfonate-S(740<plus-minus>610ppm)compared with those(RUA)from reference soils(total S : 0.34<plus-minus>0.04%, total organic S : 0.33<plus-minus>0.04%, sulfonate-S : 530<plus-minus>320ppm). 3)Although the relative concentrations of sulfhydryl-S and inorganic S were low(less than 10% of total S), both components were also rich in AHA(sulfhydryl-S : 270<plus-minus> 110ppm for AHA and 90<plus-minus>70ppm for RHA, inorganic S : 370<plus-minus>190ppm for AHA and 110<plus-minus>30ppm for RRA). 4)Ester sulfate-S showed approximately constant concentrations in both samples(ABA : 1500<plus-minus> 360ppm, RHA : 1560<plus-minus>320ppm)regardless of the pH and S content of t

从日本火山地区（pH(H_2O)=2.81 ~ 3.93）收集了13个酸性土壤（A_<0+1>, 0 ~ 15cm），从未受火山酸影响的地区（pH=4.10 ~ 4.74）收集了9个对照土壤。在0.1M NAOH条件下提取浑黄酸，并通过酸化（pH=2, HCl）沉淀。重复溶沉5次后，用2% HF处理腐植酸，以降低灰分含量。然后用CHCl_3洗涤以去除任何元素s。得到的腐植酸被冷冻并进行s分析。腐植酸中硫的种类有总硫、酯硫酸盐硫、磺酸硫、巯基硫、无机硫和c键硫。C-S-S-C和非离子含s基团。结果表明：1)酸性土壤S含量（0.22<正负>0.10%）明显高于对照土壤S含量（0.11<正负>0.03%），随着土壤PH值（3.5 ~ 2.8）的降低，S含量从0.15%迅速增加到0.40%；2)酸性土壤腐殖酸（AHA）的总S（0.56<正负>0.21%）、总有机S（0.53<正负>0.19%）和磺酸S（740<正负>610ppm）含量高于对照土壤（RUA）（总S: 0.34<正负>0.04%，总有机S: 0.33<正负>0.04%，磺酸S: 530<正负>320ppm）。3)虽然巯基S和无机S的相对浓度较低（不到总S的10%），但这两种组分都富含AHA（巯基S: 270<正负> 110ppm, RHA 90<正负>70ppm，无机S: 370<正负>190ppm, RRA 110<正负>30ppm）。4)无论t的pH和S含量如何，两种样品中硫酸酯-S的浓度基本不变（ABA: 1500<正负> 360ppm, RHA: 1560<正负>320ppm）

项目成果

T. Takamatsu et al.: "Effect of volcanic acid deposition on soil chemistry I. Status of exchangeable cations and sulfur" Soil Sci.

T. Takamatsu 等人：“火山酸沉积对土壤化学的影响 I. 可交换阳离子和硫的状态” 土壤科学。

T.Takamatsu: "Enrichment of sulfur in soil humic acids by volcanic and deposition" Transactions 14th:International Congress of Soil Science. VIII. 29-30 (1990)

T.Takamatsu：“火山和沉积对土壤腐植酸中硫的富集”第 14 期汇刊：国际土壤科学大会。

高松 武次郎(分担執筆): "海洋化学序説(第7章.宇曽利湖)" 京都大学学術出版会, (1992)

高松武二郎（撰稿人）：“海洋化学概论（第 7 章。乌索里湖）”京都大学出版社，（1992 年）

高松 武次郎(分担執筆): "海洋化学序説(第7章,宇曽利湖)" 京都大学学術出版会, (1992)

高松武二郎（撰稿人）：《海洋化学概论（第 7 章，乌索里湖）》京都大学出版社，（1992 年）

T. Takamatsu et al.: "Lake Usori In : Introduction to Marine Chemistry (ed. T. Fujinaga)" Kyoto Univ. Academic Press.

T. Takamatsu 等人：“Lake Usori In：海洋化学概论（T. Fujinaga 编）”京都大学。