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| CO2浓度升高与补充灌溉对中国半干旱地区春小麦田间生态系统边缘效应的影响研究 | |
| 引用本文： | 肖国举,张强,白虎志,赵鸿,王润元,张峰举.CO2浓度升高与补充灌溉对中国半干旱地区春小麦田间生态系统边缘效应的影响研究[J].西北农业学报,2008,17(3):103-112. |
| 作者姓名： | 肖国举 张强 白虎志 赵鸿 王润元 张峰举 |
| 作者单位： | 1. 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点实验室,甘肃兰州,730020;宁夏大学生物工程研究所,宁夏银川,750021 2. 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点实验室,甘肃兰州,730020 3. 宁夏大学生物工程研究所,宁夏银川,750021 |
| 基金项目： | 中国博士后科学基金;宁夏自治区科学基金 |
| 摘 要： | 试验研究表明,在春小麦全生育期进行补充灌溉和升高CO2浓度能够有效提高田间生态系统边缘效应。与没有CO2浓度升高比较,当CO2浓度升高40~160μmol/mol时,春小麦田间生态系统边缘效应的面积增加1.8~3.6 m2。在春小麦全生育期补充灌溉60 mm与补充灌溉30 mm比较,田间生态系统边缘效应有显著变化。特别是将CO2浓度升高与补充灌溉进行组合,较没有CO2浓度升高与补充灌溉比较,春小麦田间生态系统边缘效应面积提高了300%~500%。同时研究还表明,在春小麦全生育期CO2浓度升高与补充灌溉可以显著提高春小麦田间生态系统边缘效应系数。CO2浓度升高与补充灌溉进行组合较没有CO2浓度升高与补充灌溉比较,边缘效应系数提高4.0~6.7。因此,CO2浓度升高与补充灌溉组合对提高春小麦边缘效应有显著作用。 |
| 关 键 词： | 边缘效应面积 边缘效应系数 气候变化 春小麦 补充灌溉 |
| 收稿时间： | 2007/11/27 0:00:00 |
| 修稿时间： | 2008/1/21 0:00:00 |
Changes of Border Effect of Spring Wheat Field System under Elevated CO2 Concentration and Supplemental Irrigation in Semiarid Region of China |
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| XIAO Guo-ju,ZHANG Qiang,BAI Hu-zhi,ZHAO Hong,WANG Run-yuan and ZHANG Feng-ju.Changes of Border Effect of Spring Wheat Field System under Elevated CO2 Concentration and Supplemental Irrigation in Semiarid Region of China[J].Acta Agriculturae Boreali-occidentalis Sinica,2008,17(3):103-112. | |
| Authors: | XIAO Guo-ju ZHANG Qiang BAI Hu-zhi ZHAO Hong WANG Run-yuan and ZHANG Feng-ju |
| Institution: | Institute of Arid Meteorology, China Meteorological Administration, Gansu Key Laboratory of Arid Cli mateChanges and Disaster Reduction, Lanzhou Gansu 730020, China;BioengineeringInstitute of Ningxia University, Yinchuan Ningxia 750021, China;Institute of Arid Meteorology, China Meteorological Administration, Gansu Key Laboratory of Arid Cli mateChanges and Disaster Reduction, Lanzhou Gansu 730020, China;Institute of Arid Meteorology, China Meteorological Administration, Gansu Key Laboratory of Arid Cli mateChanges and Disaster Reduction, Lanzhou Gansu 730020, China;Institute of Arid Meteorology, China Meteorological Administration, Gansu Key Laboratory of Arid Cli mateChanges and Disaster Reduction, Lanzhou Gansu 730020, China;Institute of Arid Meteorology, China Meteorological Administration, Gansu Key Laboratory of Arid Cli mateChanges and Disaster Reduction, Lanzhou Gansu 730020, China;BioengineeringInstitute of Ningxia University, Yinchuan Ningxia 750021, China |
| Abstract: | In this study, our aim is to clarify the dynamic changes of border effect of spring wheat field system under elevated CO2 concentration and supplemental irrigation in a semiarid region of China. The experimental results showed that elevated CO2 concentration and supplemental irrigation could improve the effect of crop border. In elevated CO2 concentration from 40 to 160 μmol/mol, the border effect area was improved by 1.8～3.6m2 in comparison with that without elevated CO2 concentration. The border effect area, in supplemental irrigation 60mm, was significantly changes than that in supplemental irrigation 30 mm and without supplemental irrigation. Specially, under the combination of elevated CO2 concentration and supplemental irrigation, the border effect area was improved by 300%～500% in comparison with that without elevated CO2 concentration and supplemental irrigation. At the same time, the experimental results showed that the elevated CO2 concentration and supplemental irrigation could decrease the core area/border effect area (Q). In the combination of elevated CO2 concentration and supplemental irrigation, Q was decreased by 4.0～6.7 in comparison without elevated CO2 concentration and supplemental irrigation. Thus, the combination of elevated CO2 concentration and supplemental irrigation played an important role in the improvement of the effect of spring wheat border. |
| Keywords: | Border effect area Core area/Border effect area(Q) Cli matic change Spring wheat Supplemental irrigation |
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