Carbon Turnover in a Crop Rotation Under Free Air CO2 Enrichment (FACE)

H. J. WEIGEL; K. LEWIN; J. NAGY; A. PACHOLSKI; S. BURKART; M. HELAL; O. HEINEMEYER; B. KLEIKAMP; R. MANDERSCHEID; C. FR(U)HAUF; G. F. HENDREY

首页> 外文期刊>土壤圈（英文版） >Carbon Turnover in a Crop Rotation Under Free Air CO2 Enrichment (FACE)

【24h】

Carbon Turnover in a Crop Rotation Under Free Air CO2 Enrichment (FACE)

机译：空气中CO2浓度升高时作物轮作中的碳周转量（FACE）

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

页面导航

摘要
著录项
相关主题

摘要

Mostly based on assumptions derived from controlled-environment studies, predicted future atmospheric CO2 concentrations [CO2] are expected to have considerable impacts on carbon (C) turnover in agro-ecosystems. In order to allow the in situ examination of C-transformations in the plant-soil system of arable crop rotations under future [CO2], a free air carbon dioxide enrichment (FACE) experiment (550 μmol mol-1 CO2) was started at Braunschweig, Germany in 1999.The crop rotation under investigation comprised winter barley, a cover crop (ryegrass), sugar beets and winter wheat.Assessments of CO2 effects included the determination of above- and belowground biomass production, measurements of canopy CO2- and H2O- fluxes, soil microbial biomass and in situ soil respiration. The results obtained during the 1st crop rotation cycle (3 years) showed that for the selected crops elevated [CO2] entailed significant positive effects (P<0.05) on aboveground (6%-14% stimulation) and belowground biomass production (up to 90% stimulation), while canopy evapotranspiration was reduced. This resulted in increased soil water content. Also, depending on crop type and season, high CO2 stimulated in situ soil respiration (up to 30%), while soil microbial biomass did not show significant respoases to elevated [CO2] during the first rotation cycle.

机译：主要基于受控环境研究得出的假设，预计未来大气中的CO2浓度[CO2]将对农业生态系统中的碳（C）营业额产生重大影响。为了能够在未来[CO2]下对作物轮作的植物-土壤系统中的C转化进行原位检查，在不伦瑞克开始了自由空气二氧化碳富集（FACE）实验（550μmolmol-1 CO2）于1999年在德国进行。被调查的农作物轮作包括冬大麦，农作物（甜菜），甜菜和冬小麦。CO2效果评估包括确定地上和地下生物量的生产，测量冠层CO2-和H2O-通量，土壤微生物生物量和原位土壤呼吸。在第一个作物轮作周期（3年）中获得的结果表明，对于选定的作物，升高的[CO2]对地上（6％-14％的刺激）和地下生物量产生（高达90％）产生了显着的正效应（P <0.05）。％刺激），而冠层蒸散量减少了。这导致土壤含水量增加。同样，根据作物类型和季节的不同，高CO 2刺激原位土壤呼吸（高达30％），而土壤微生物生物量在第一个轮作周期中并未表现出明显的回升至[CO2]升高的趋势。

著录项

来源
《土壤圈（英文版）》 |2005年第6期|728-738|共11页
作者
H. J. WEIGEL; K. LEWIN; J. NAGY; A. PACHOLSKI; S. BURKART; M. HELAL; O. HEINEMEYER; B. KLEIKAMP; R. MANDERSCHEID; C. FR(U)HAUF; G. F. HENDREY;
展开▼
作者单位

Institute of Agroecology, Federal Agricultural Research Centre (FAL),Bundesallee 50, 38116 Braunschweig (Germany);

Institute of Agroecology, Federal Agricultural Research Centre (FAL),Bundesallee 50, 38116 Braunschweig (Germany);

Institute of Agroecology, Federal Agricultural Research Centre (FAL),Bundesallee 50, 38116 Braunschweig (Germany);

Institute of Agroecology, Federal Agricultural Research Centre (FAL),Bundesallee 50, 38116 Braunschweig (Germany);

Institute of Agroecology, Federal Agricultural Research Centre (FAL),Bundesallee 50, 38116 Braunschweig (Germany);

Institute of Agroecology, Federal Agricultural Research Centre (FAL),Bundesallee 50, 38116 Braunschweig (Germany);

Institute of Agroecology, Federal Agricultural Research Centre (FAL),Bundesallee 50, 38116 Braunschweig (Germany);

German Weather Service, Agriculture Department, Kreuzweg 25, 65366 Geisenheim (Germany);

3Earth Systems Sciences Division, Brookhaven National Laboratory Building 490D, P.O. Box 5000, Upton, NY 11973(USA);

3Earth Systems Sciences Division, Brookhaven National Laboratory Building 490D, P.O. Box 5000, Upton, NY 11973(USA);

3Earth Systems Sciences Division, Brookhaven National Laboratory Building 490D, P.O. Box 5000, Upton, NY 11973(USA);

展开▼
收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
agroecosystems, carbon, elevated CO2, FACE, soil;

机译：农业生态系统;碳;升高的CO2;FACE;土壤;

Carbon Turnover in a Crop Rotation Under Free Air CO2 Enrichment (FACE)

摘要

著录项

相关主题

期刊订阅