| 山地灾害和人类活动干扰下九寨沟下季节海的沉积变化 |
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| 引用本文： | 陈盼,唐亚,乔雪,肖维阳,蹇代军.山地灾害和人类活动干扰下九寨沟下季节海的沉积变化[J].山地学报,2011,29(5). |
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| 作者姓名： | 陈盼 唐亚 乔雪 肖维阳 蹇代军 |
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| 作者单位： | 1. 四川大学环境科学与工程系,四川成都,610065
2. 九寨沟国家自然保护区科研处,四川九寨沟,623400 |
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| 基金项目： | “高等学校学科创新引智计划”(编号B08037); 四川省科技厅国际合作计划项目(2010HH0007)~~ |
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| 摘 要： | 九寨沟是我国旅游强度最大的山地旅游地之一,山地灾害是其旅游发展过程中面临的主要挑战.为了探讨山地灾害和人类活动对湖泊生态系统的影响,以下季节海湖泊沉积物为研究对象,利用137Cs和210Pb建立年代标尺,对沉积物粒度进行了分析.137Cs和210Pb定年法确定湖底下38.5 cm处为1952年的沉积物,50 cm处为1848年的；沉积物粒度分析结果显示,剖面内中值粒径平均值偏大,沉积速率和粗颗粒含量在1952年之后呈明显增大趋势.结果表明,沉积物来源主要是泥石流等山地灾害造成的泥砂人湖、旅游开发过程中道路等基础设施建设带来的颗粒物质；湖泊沉积对流域内的山地灾害,如泥石流等有较好的响应；森林采伐和旅游开发在一定程度上促进了湖泊沉积.
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| 关 键 词： | 旅游 山地灾害 湖泊沉积 人类活动 森林采伐 |
Environmental Change Revealed by Lake Sedimentation in Jiuzhaigou National Reserve,Sichuan,China |
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| CHEN Pan
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TANG Ya
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QIAO Xue
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XIAO Weiyang
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JIAN Daijun.Environmental Change Revealed by Lake Sedimentation in Jiuzhaigou National Reserve,Sichuan,China[J].Journal of Mountain Research,2011,29(5). |
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| Authors: | CHEN Pan TANG Ya QIAO Xue XIAO Weiyang JIAN Daijun |
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| Institution: | CHEN Pan1,TANG Ya1,QIAO Xue1,XIAO Weiyang2,JIAN Daijun2(1.Department of Environmental Science and Engineering,Sichuan University,Chengdu 610065,China,2.Scientific Research Department,Jiuzhaigou Administrative Bureau,Jiuzhaigou 623400,China) |
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| Abstract: | Jiuzhaigou is one of the most popular mountain tourist destinations in China.Fast increasing visitors,geological and mountain hazards and human activities like logging and construction of roads are recognized as the main challenges in sustainable tourism development.Grain size of sediments of the lower Seasonal Lake in Jiuzhaigou was studied in order to understand the responses of sedimentation to geological events,mountain hazards and human activities like earthquake,logging and road construction.137Cs and... |
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| Keywords: | Tourism geological hazards lake sediment human activity forest logging |
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