Relationship between sulfur speciation in soils and plant availability
文献类型：期刊论文
| 作者 | Shan, XQ; Chen, B; Zhang, TH; Li, FL; Wen, B; Qian, J |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 1997 |
| 卷号 | 199期号:3页码:237-246 |
| 关键词 | sulfur speciation soil pot experiment and field survey multiple linear regression plant availability |
| 英文摘要 | Both pot experiments and field survey were conducted to investigate the relationship between sulfur speciation in soils and sulfur concentration in plants. Soil sulfur was fractionated into water-soluble sulfate (S-1), adsorbed sulfate (S-2), carbonate-occluded sulfate (S-3), ester sulfate (S-4) and carbon-bonded sulfur (S-5). The correlation was well described by multiple linear regression equations with plant sulfur concentration being the dependent variable and soil sulfur species being the independent variable. All the correlations were found to be highly significant (P < 0.01). Moreover, the regression equations show consistent forms with respect to the relative magnitude of the factors before each of the variables, by the order S-1 > S-2 > S-4 > S-5 > S-3. The average values of the factors before S-1, S-2, S-4, S-5 and S-3 were 28.6, 11.0, 3.2, 0.47 and -0.14, respectively, indicating that water-soluble sulfate was the most easily available form of soil sulfur, followed by adsorbed sulfate, ester sulfate, carbon-bonded sulfur and carbonate-occluded sulfate. Changes in concentrations of the different forms of soil sulfur after pot experiments gave direct evidence to the order of availability. S-1 and S-2 decreased significantly, the content of S-4 also reduced, whereas S-5 and S-3 remained almost unchanged. These results suggested that water-soluble and adsorbed sulfate are directly available to plants, while the mineralization of sulfate from organic sulfur, especially from ester sulfate, also made an important contribution to plant uptake of sulfur. It appears that the sum of water-soluble sulfate, adsorbed sulfate and ester sulfate covers most of the available sulfur in soils and can be used as an indicator of the status of soil sulfur. Based on the above consideration a simplified speciation method was recommended to determine the available forms of soil sulfur. (C) 1997 Elsevier Science B.V. |
| WOS记录号 | WOS:A1997XD40900002 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24363]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Shan, XQ,Chen, B,Zhang, TH,et al. Relationship between sulfur speciation in soils and plant availability[J]. SCIENCE OF THE TOTAL ENVIRONMENT,1997,199(3):237-246. |
| APA | Shan, XQ,Chen, B,Zhang, TH,Li, FL,Wen, B,&Qian, J.(1997).Relationship between sulfur speciation in soils and plant availability.SCIENCE OF THE TOTAL ENVIRONMENT,199(3),237-246. |
| MLA | Shan, XQ,et al."Relationship between sulfur speciation in soils and plant availability".SCIENCE OF THE TOTAL ENVIRONMENT 199.3(1997):237-246. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。