[1]闫云霞,许炯心,Marwan Hasson,等.长江流域侵蚀产沙尺度效应的区域分异[J].山地学报,2011,(02):141.
　YAN Yunxia,XU Jiongxin,Marwan Hasson,et al.Spatial Variation of Scale Effects of Sediment Yield in the Yangtze River Basin[J].Mountain Research,2011,(02):141.
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长江流域侵蚀产沙尺度效应的区域分异()

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《山地学报》[ISSN:1008-2186/CN:51-1516]

Title:: Spatial Variation of Scale Effects of Sediment Yield in the Yangtze River Basin

作者:: 闫云霞;许炯心;Marwan Hasson;廖建华;; 1.中国科学院地理科学与资源研究所，中国科学院水循环与地表过程重点实验室，北京 100101；
2.Department of Geography, University of British Columbia, Vancouver,British Columbia, Canada. V6T 1Z2；
3.江西师范大学，地理与环境教育学院，江西南昌 330022

Author(s):: YAN Yunxia; XU Jiongxin; Marwan Hasson; LIAO Jianhua; 1.Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences; Key Laboratory of Water Cycle and Related Land Surface Processes, Chinese Academy of Sciences, Beijing 100101, China; 2, Department of Geography, University of British Columbia, Vancouver, British Columbia, Canada. V6T 1Z2;
3. School of Geography and Environment, Jiangxi Normal University, Nanchang 330022,China

摘要:: 以长江流域水文站点的观测数据为依据,基于一定的分区原则,将整个长江流域分成了8个区域,对所有分区产沙模数的尺度效应进行了深入分析。研究表明,所有分区产沙模数的尺度效应可以概括为三类:产沙模数随流域面积的增大而减小,或先减小后基本保持不变的,主要包括长江中下游干流沿岸区域,岷江主体区域,洞庭湖流域和鄱阳湖流域;产沙模数随流域面积的增大基本保持不变的,包括嘉陵江主体区域和汉江流域;产沙模数随流域面积增大而增大,或先增大后基本保持不变的,包括长江上游干流沿岸的非泥石流区域和乌江流域。不同流域尺度效应的差异主要与流域土地利用方式有关。基于各分区校正方程,将所有站点进行了标准面积为100 km2,1 0...

Abstract:: Spatial variation of sediment yield of Yangtze river basin is studied in this paper. The basin is divided into eight homogenous subbasins. 326 stations with drainage area less than 30 000 km2 were used to study the scale effect of sediment yield for the whole study area. As a river basin which suffers intensive human activities, scale effect of each sub region is heavily influenced by land use and cover. All of 8 subbasins are classified as 3 types, I, soil erosion mainly comes from deforestation and sleep slope cultivation, Ys increases as a increases; II, soil erosion mainly occurs in middlelower mountains and lower mountains and hilly areas, Ys remains unchanged as a increases; III, soil erosion mainly occurs sloping cultivated land, Ys decreases as a increases. Using correction functions, all data are adjusted to different standard areas of 100 km2, 1 000 km2 and 10 000 km2. Sediment yield mapping at different contributing areas are built and compared. Proposal about soil conservation for each type is given.

备注/Memo:: 收稿日期(Received date)：2010-09-03；改回日期(Accepted) : 2010-12-20。
基金项目（Foundation item）：国家自然科学基金资助项目(40701018,40671019)\[ National Natural Science Foundation of China (40701018,40671019).\]
作者简介（Biography）：闫云霞（1975-），女，山西浮山人，助理研究员，主要从事河流地貌研究工作。 \[Yan Yunxia(1975-)，female, was born in Shanxi, assistant professor．Fluvial geomorphology ＆ erosion and sediment yield. \]E-mail：yanyx@igsnrr.ac.cn

更新日期/Last Update: 1900-01-01