检索结果-南通市图书馆

Sediment change under climate changes and human activities in the yuanjiang-Red river Basin

Science Bulletin 2007年第S2期 164-171页

作者： HE DaMing~(1+) REN Jing~(1,2) FU KaiDao~1 LI YunGang~1 1 Asia International rivers Center of Yunnan University,Kunming 650091,China 2 College of Tourism and Geography Science,Yunnan Normal University,Kunming 650092,China

Both the climate change and human activities are the major Influence factors to the sediment change In mountainous *** on the over 40 years' record,suspended sediment loads（SSL）change at the Manheo gauging station in the lower reaches of yuanjiang river（upper Red river）.In this paper,the variation of the sediment and its drivers were analyzed through different methods such as synchronous data comparison,traditional correlation,linear regression,and Granger *** results show that （1）the general trend of the annual average sediment concentration（SSC）and SSL at Manheo station is increasing from the 1960s to the 1990s,and there is a quick change period after 1984;（2）the SSL and SSC at Manhao station,during different periods of the 1960s,1970s,1980s and 1990s,are 1.87,2.49, 3.12,3.63 kg/m3,and 28.7×10～6,40.3×10～6,44.1×10～6,60.3×10～6 t/a,respectively;（3）the correlation analysis end the Granger causality test proved that the climate changes in the catchment were the main driving factors to the sediment variation in the period of 1960s and 1990s,but the influence by the mountain- ous human actions on the sediment change is stronger than that by the local climate changes in the 1970s and 1980s;（4）the correlation between the sediment changes and the forest coverage change is negative,which further proves that the sediment changes are strongly affected by the human activities in the basin.

关键词： sediment change Granger causality test yuanjiang river the Longitudinal Range-Gorge Region

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Study on the spatiotemporal variability of eco-hydrological characteristics of the rivers in the Longitudinal Range-Gorge Region and their driving forces

引用

Science Bulletin 2007年第S2期 122-133页

作者： HU Bo CUI BaoShan WEI GuoLiang ZHAI HongJuan REN HuaLi State Key Joint Laboratory of Environmental Simulation and Pollution Control,School of Environment,Beijing Normal University,Beijing 100875,China

Taking two typical rivers in high mountains and steep gorge areas as example,this paper analyzes the spetiotemporal variability of the eco-hydrological characteristics and the driving forces leading to ***,based on the species-environmental data processing,this paper adopts canonical correspondence analysis(CCA)method to identify the environmental factors influencing the distribu- tion of river bank ***,this study uses the ecological diversity Index to represent the spatiotemporel variability of ecological ***,this paper uses the multiple correlation method to analyze the relationship between the hydrological factors and meteorological factors,and to identify the key factors leading to the hydrological regime *** last,based on the analysis of basin water quality data,this paper analyzes the regularity of spatiotemporal variability and its driving *** the systematic analysis on the outcome,we could get that the spatiotemporel distribution of eco-hydrological characteristics shows the regular changes from the upstream to downstream(from the north to the south),and the spatiotemporal variability of eco-hydrological characteristics is typical from the east to the ***,aspect and water distribution are the primary natural driving forces leading to the spatiotemporel variability of eco-hydrological characteristics;and exploitation and op- eration of hydroelectric power station,construction of road on the river bank,and basin land utilization are the main human driving forces.

关键词： Longitudinal Range-Gorge Region Lancang river yuanjiang river driving forces eco-hydrology spatiotemporal variability environmental factors

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：