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| 太湖北岸湖滨带观测场水生植物群落特征及其影响因素分析 | |
| 引用本文： | 金相灿,颜昌宙,许秋瑾.太湖北岸湖滨带观测场水生植物群落特征及其影响因素分析[J].湖泊科学,2007,19(2):151-157. |
| 作者姓名： | 金相灿 颜昌宙 许秋瑾 |
| 作者单位： | 1. 中国科学院南京地理与湖泊研究所,南京,210008;河海大学水文水资源与水利工程科学国家重点实验室,南京,210098中国科学院研究生院,北京,100039;中国地震局地震预测研究所兰州科技创新基地,兰州,730000 2. 中国气象局,国家气候中心,北京,100081 3. 南京信息工程大学,南京,210044 4. 中国科学院南京地理与湖泊研究所,南京,210008;河海大学水文水资源与水利工程科学国家重点实验室,南京,210098 |
| 基金项目： | 国家重点实验室基金 , 国家自然科学基金 , 中国科学院知识创新工程项目 |
| 摘 要： | 研究了鄱阳湖流域在1955-2002年间的径流系数的变化,重点分析了它与水循环的两个基本要素:降水量和蒸发量的关系,同时对其原因进行了初步的探讨.经分析,在鄱阳湖流域中,径流系数较大的是饶河流域和信江流域,较小的是抚河流域;在年内变化上,4-6月为五河流域径流系数比较大的月份,这与鄱阳湖流域降水集中期相对应.在空间上,4-6月仍然以饶河流域和信江流域相对较大,而抚河流域较小,特别是8月份的径流系数远小于其他四河;年代际变化上,1990s径流系数增加较为显著.尽管鄱阳湖流域的径流系数除了受气候因子的影响外,还受到水土流失和地形等因素的影响,但是降水量的增加,特别是暴雨频率的增加仍然是其主要影响因素,蒸发量的减小对径流系数的增加也有一定程度的影响.径流系数与气温并无明显的线性相关关系. |
| 关 键 词： | 鄱阳湖流域 径流系数 降水量 蒸发量 气温 鄱阳湖流域 径流系数 变化趋势 气候因子 线性相关关系 Lake Basin coefficients runoff factors climate relationship 气温 程度 影响因素 暴雨频率 水土流失 年代际变化 四河 空间 对应 |
| 收稿时间： | 2006-01-20 |
| 修稿时间： | 2006-03-06 |
The community features of aquatic plants and its influence factors of lakeside zone in the north of Lake Taihu |
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| JIN Xiangcan,YAN Changzhou and XU Qiujin.The community features of aquatic plants and its influence factors of lakeside zone in the north of Lake Taihu[J].Journal of Lake Science,2007,19(2):151-157. | |
| Authors: | JIN Xiangcan YAN Changzhou and XU Qiujin |
| Institution: | State Environmental Protection Key Lab for Lake Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, P.R.China,State Environmental Protection Key Lab for Lake Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, P.R.China and State Environmental Protection Key Lab for Lake Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, P.R.China |
| Abstract: | From the view of water cycling,runoff coefficients are important index of water resources in a particular catchment.Changes of runoff coefficents in the five rivers of Lake Poyang basin 1955-2002 were analysed.Result shows that runoff coefficients of Raohe River basin and Xinjiang River basin are the highest,while of Fuhe River basin is the lowest.As for monthly change,that of the five river basins all have reached the higher value from April to June,which corresponds to the rainfall period of Poyang Lake basin.Moreover,In August,runoff coefficient of Fuhe River basin is far lower than the four others.In the 1990s,runoff coefficients of the five river basins increased significantly.Although the runoff coefficients would be impacted by soil erosion and topographic condition,change of precipitation is a main factor to runoff coefficients.Downward trend of evapotranspiration also impacts on increas- ing runoff coefficients.Especially in the 1990s,the increase of runoff coefficients is closely related to the increase in rainstorm frequency and decrease in evapotranspiration.The relationship between temperature and runoff coeffi- cients is not much significant. |
| Keywords: | Lake Poyang basin runoff coefficient precipitation evapotranspiration |
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