| Soil respiration under maize crops: Effects of water, temperature, and nitrogen fertilization | |
| Ding, Weixin; Cai, Yan; Cai, Zucong; Yagi, Kazuyuki; Zheng, Xunhua | |
| 刊名 | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
 |
| 2007-05-01 | |
| 卷号 | 71期号:3页码:944-951 |
| ISSN号 | 0361-5995 |
| DOI | 10.2136/sssaj2006.0160 |
| 通讯作者 | Ding, Weixin(wxding@mail.issas.ac.cn) |
| 英文摘要 | To evaluate the response of soil respiration to soil moisture, temperature, and N fertilization, and estimate the contribution of soil and rhizosphere respiration to total soil CO2 emissions, a field experiment was conducted in the Fengqiu State Key Agro-Ecological Experimental Station, Henan, China. The experiment included four treatments: bare soil fertilized with 150 kg N ha(-1) (CK), and maize (Zea mays L.)-cropped soils amended with 0 (NO), 150 (N150), and 250 (N250) kg N ha-1. Mean seasonal soil CO2 emissions in the CK, NO, N150, and N250 treatments were estimated to be 294, 598, 541, and 539 g C m(-2), respectively. The seasonal soil CO2 fluxes were significantly affected by soil temperature, with the change in the rate of flux for each 10 degrees C increase in temperature (Q(10)) of 1.90 to 2.88, but not by soil moisture. Nitrogen fertilization resulted in a 10.5% reduction in soil CO 2 flux; however, it did not significantly increase the maize aboveground biomass but did increase maize yield. Soil respiration measurement using the root-exclusion technique indicated that soils fertilized with 150 kg N ha(-1) contributed 54% of the total soil CO 2 emission, or 8% of soil organic C down to a depth of 40 cm. An amount of C equivalent to 26% of the net assimilated C in harvested above- and belowground plant biomass was returned to the atmosphere by rhizosphere respiration. |
| 收录类别 | SCI |
| WOS关键词 | GLOBAL CARBON-CYCLE ; ORGANIC-MATTER ; CO2 FLUX ; MICROBIAL RESPIRATION ; DECIDUOUS FOREST ; ROOT RESPIRATION ; HARVARD FOREST ; DEPOSITION ; DIOXIDE ; GRASSLAND |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SOIL SCI SOC AMER |
| WOS记录号 | WOS:000246602500037 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2558695 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Ding, Weixin |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Natl Inst AgroEnvironm Sci, Tsukuba, Ibaraki 3058604, Japan 3.Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Weixin,Cai, Yan,Cai, Zucong,et al. Soil respiration under maize crops: Effects of water, temperature, and nitrogen fertilization[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2007,71(3):944-951. |
| APA | Ding, Weixin,Cai, Yan,Cai, Zucong,Yagi, Kazuyuki,&Zheng, Xunhua.(2007).Soil respiration under maize crops: Effects of water, temperature, and nitrogen fertilization.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,71(3),944-951. |
| MLA | Ding, Weixin,et al."Soil respiration under maize crops: Effects of water, temperature, and nitrogen fertilization".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 71.3(2007):944-951. |
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