Effects of elevated co2 concentration and nitrogen supply on biomass and active carbon of freshwater marsh after two growing seasons in sanjiang plain, northeast china
文献类型：期刊论文
| 作者 | Zhao Guangying1,2,3; Liu Jingshuang1; Wang Yang1; Dou Jingxin1,3; Dong Xiaoyong4 |
| 刊名 | Journal of environmental sciences-china
 |
| 出版日期 | 2009 |
| 卷号 | 21期号:10页码:1393-1399 |
| 关键词 | Elevated co2 concentration Freshwater marsh Biomass Soil active carbon |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/s1001-0742(08)62431-6 |
| 通讯作者 | Liu jingshuang(liujingshuang@neigae.ac.cn) |
| 英文摘要 | An experiments were carried out with treatments differing in nitrogen supply (0, 5 and 15 g n/m(2)) and co2 levels (350 and 700 mu mol/mol) using otc (open top chamber) equipment to investigate the biomass of calamagrostis angustifolia and soil active carbon contents after two years. the results showed that elevated co2 concentration increased the biomass of c. angustifolia and the magnitude of response varied with each growth period. elevated co2 concentration has increased aboveground biomass by 16.7% and 17.6% during the jointing and heading periods and only 3.5% and 9.4% during dough and maturity periods. the increases in belowground biomass due to co2 elevation was 26.5%, 34.0% and 28.7% during the heading, dough and maturity periods, respectively. the responses of biomass to enhanced co2 concentrations are differed in n levels. both the increase of aboveground biomass and belowground biomass were greater under high level of n supply (15 g n/m(2)). elevated co2 concentration also increased the allocation of biomass and carbon in root. under elevated co2 concentration, the average values of active carbon tended to increase. the increases of soil active soil contents followed the sequence of microbial biomass carbon (10.6%) > dissolved organic carbon (7.5%) > labile oxidable carbon (6.6%) > carbohydrate carbon (4.1%). stepwise regressions indicated there were significant correlations between the soil active carbon contents and plant biomass. particularly, microbial biomass carbon, labile oxidable carbon and carbohydrate carbon were found to be correlated with belowground biomass, while dissolved organic carbon has correlation with aboveground biomass. therefore, increased biomass was regarded as the main driving force for the increase in soil active organic carbon under elevated co2 concentration. |
| WOS关键词 | SOIL MICROBIAL BIOMASS ; ATMOSPHERIC CO2 ; ORGANIC-MATTER ; ENRICHMENT FACE ; RESPONSES ; DECOMPOSITION ; ROOTS ; RHIZOSPHERE ; ALLOCATION ; DYNAMICS |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000271049700011 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2394075 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Liu Jingshuang |
| 作者单位 | 1.Chinese Acad Sci, NE Inst Geog & Agroecol, Changchun 130012, Peoples R China 2.Harbin Normal Univ, Sch Geog Sci, Harbin 150080, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 4.Heilongjiang Acad Forestry Sci, Harbin 150040, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao Guangying,Liu Jingshuang,Wang Yang,et al. Effects of elevated co2 concentration and nitrogen supply on biomass and active carbon of freshwater marsh after two growing seasons in sanjiang plain, northeast china[J]. Journal of environmental sciences-china,2009,21(10):1393-1399. |
| APA | Zhao Guangying,Liu Jingshuang,Wang Yang,Dou Jingxin,&Dong Xiaoyong.(2009).Effects of elevated co2 concentration and nitrogen supply on biomass and active carbon of freshwater marsh after two growing seasons in sanjiang plain, northeast china.Journal of environmental sciences-china,21(10),1393-1399. |
| MLA | Zhao Guangying,et al."Effects of elevated co2 concentration and nitrogen supply on biomass and active carbon of freshwater marsh after two growing seasons in sanjiang plain, northeast china".Journal of environmental sciences-china 21.10(2009):1393-1399. |
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来源：中国科学院大学
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