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| 46 a气候变化对呼伦湖区域生态环境的影响 | |
| 引用本文： | 白美兰,郝润全,沈建国.46 a气候变化对呼伦湖区域生态环境的影响[J].中国沙漠,2008,28(1):101-107. |
| 作者姓名： | 白美兰 郝润全 沈建国 |
| 作者单位： | 1. 内蒙古气候中心,内蒙古,呼和浩特,010051 2. 内蒙古气象科技服务中心,内蒙古,呼和浩特,010051 3. 内蒙古气象局,内蒙古,呼和浩特,010051 |
| 基金项目： | 科研院所社会公益研究专项资金“沙尘气溶胶辐射模型及气候环境效应”项目（2005DIB3J108） |
| 摘 要： | 利用1959—2005年温度、降水和卫星遥感监测资料,研究呼伦湖区域气候变化特征,进而分析气候变化对其周边地区生态环境的影响。结果表明：①近46 a来呼伦湖区域温度呈显著的升高态势;降水量波动性较大,总体上呈下降趋势,并存在11 a和22 a的周期性变化。从1999年至2005年降水量下降趋势加快。②无论是温度还是降水,其气候变率都处于升高的时期,气候变率的增大是导致极端气候事件如干旱、高温酷热天气等增多的主要原因。近年来气候的变干、变暖,使得1999年以后呼伦湖区域生态呈现快速恶化的趋势。由此引起一系列生态环境问题,如呼伦湖水域面积的缩小、湿地萎缩、草场退化等。③近年来小雨事件呈减少趋势,但进入21世纪后小雨强度和干燥事件显著增强,致使干旱事件频发和强度的增加,进一步加剧了呼伦湖区域生态环境的恶化。 |
| 关 键 词： | 生态环境 恶化 气候变化 呼伦湖区域 |
| 文章编号： | 1000-694X（2008）01-0101-07 |
| 收稿时间： | 2006-11-20 |
| 修稿时间： | 2007-01-04 |
Effects of Climatic Change on Eco-Environment in HuLunHu Lake Area in Last 46 Years |
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| BAI Mei-lan,HAO Run-quan,SHEN Jian-guo.Effects of Climatic Change on Eco-Environment in HuLunHu Lake Area in Last 46 Years[J].Journal of Desert Research,2008,28(1):101-107. | |
| Authors: | BAI Mei-lan HAO Run-quan SHEN Jian-guo |
| Institution: | 1.Climatic Center of Inner Mongolia, Hohhot 010051, China; 2.Meteorological Science &; Service Center of Inner Mongolia; Hohhot 010051, China; 3.Meteorological Office of Inner Mongolia, Hohhot 010051, China |
| Abstract: | The climate changing characteristic and its effect on the eco-environment of HuLunHu Lake area in Inner Mongolia are studied by using the data of temperature, precipitation and remote sensing data from 1959 to 2005. The results show that: ①For the recent 46 years, the temperature rose notably in HuLunHu Lake area. The precipitation fluctuation was great and with periodicity changes of 11-year and 22-year; In general, precipitation had decreasing trend, especially since 1999. ②Either temperature or precipitation was in high climatic variability period for the recent 46 years, so the extreme climatic events increased. The eco-environment in HuLunHu Lake area tended to be degenerated since 1999 due to the climate warming and drying. Subsequently, a series of eco-environmental problem appeared, for example, the water area of HuLunHu Lake reduced, the wetland area shrank, and the grassland degenerated, and so on. ③Sprinkle event had decreased trend in recent years, but its intensity obviously increased after entering 21st century, so that the severe drought events obviously increased. The high frequency and high intensity of drought events had enhanced the deterioration of the eco-environment of HuLunHu Lake area. |
| Keywords: | eco-environment degeneration climatic change HuLunHu Lake area |
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