| 土地利用方式对土壤水溶性有机碳的影响 |
| |
| 引用本文： | 张金波,宋长春,杨文燕.土地利用方式对土壤水溶性有机碳的影响[J].中国环境科学,2005,25(3):0-0. |
| |
| 作者姓名： | 张金波 宋长春 杨文燕 |
| |
| 作者单位： | 1.中国科学院东北地理与农业生态研究所 吉林长春130012;2.中国科学院研究生院 北京100039 |
| |
| 基金项目： | 中国科学院知识创新工程项目 |
| |
| 摘 要： | 采集三江平原不同利用方式的土壤,测定土壤水溶性有机碳(DOC)含量,以及E280值、E250E365和E240/TOC比值,研究土地利用方式对土壤DOC的影响.结果表明,随着土地利用方式的变化,土壤DOC含量变化明显,土地开垦耕作是导致土壤DOC含量降低的主要原因.湿地土壤的开垦耕作,不仅导致土壤DOC数量的减少,而且DOC的质量也在下降.土壤DOC与土壤总有机碳含量呈正相关(R2=0.66),与游离态轻组有机碳的相关性更强(R2=0.84),与土壤重组有机碳呈明显的负相关(R2=0.52).
|
| 关 键 词： | 水溶性有机碳(DOC) 土地利用 湿地 |
| 文章编号： | 1000-6923(2005)03-0343-05 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2004年8月17日 |
Influence of land-use type on soil dissolved organic carbon in the Sanjiang Plain |
| |
| ZHANG Jin-bo,SONG Chang-chun,YANG Wen-yan.Influence of land-use type on soil dissolved organic carbon in the Sanjiang Plain[J].China Environmental Science,2005,25(3):0-0. |
| |
| Authors: | ZHANG Jin-bo SONG Chang-chun YANG Wen-yan |
| |
| Abstract: | Soils of different land use type were collected for measuring the content of soil dissolved organic carbon (DOC), E280 value and specific values of E250/E365 and E240/TOC, and studying the influence of land-use type on soil DOC. In the Sanjiang Plain the content of soil DOC changed obviously with changing of land use type; the land cultivation was the main cause of decreasing the content of soil DOC. Wed land cultivation decreased not only the quantity, but also the quality of soil DOC. There was positive relation between soil DOC and soil total organic carbon (R2=0.66), the relation between DOC and free light fraction organic carbon was more strong (R2=0.84); while there was obvious negative relation between DOC and heavy fraction organic carbon (R2=0.51). |
| |
| Keywords: | dissolved organic carbon land-use wetland |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国环境科学》浏览原始摘要信息 |
| 点击此处可从《中国环境科学》下载免费的PDF全文 |
|
