长江流域资源与环境 >> 2010, Vol. 19 >> Issue (11): 1322-.

• 生态环境 • 上一篇    下一篇

长江上游输沙模数分布图的制作及其空间分异特征初步分析

师长兴   

  1. (中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室| 北京 100101)
  • 出版日期:2010-11-20

MAPPING THE SPECIFIC SEDIMENT YIELD IN THE UPPER YANGTZE RIVER AND SOME CHARACTERISTICS OF ITS SPATIAL DISTRIBUTION

SHI Changxing   

  1. (Key Laboratory of Water Cycle &|Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101)
     
  • Online:2010-11-20

摘要:

针对一般编制输沙模数图所存在的问题,提出了一种主要基于侵蚀量加权平均绘制输沙模数图的方法。利用1956~1987年152个水文站输沙资料和其他相关数据,将各水文站观测数据插补延长到同样的长度,通过侵蚀量加权空间插值制作了长江上游输沙模数分布图。交叉检验结果显示利用本文方法得到的输沙模数插值结果要优于直接插值法的结果。所绘制的输沙模数图显示长江上游高产沙区主要集中于两个条带:一个是从北向南沿陇南和川滇山地延伸,另一个是从秦巴山地向东南,过川中丘陵北部,至黄陵背斜。同时,该图也揭示出在低产沙区存在局部高产沙斑块或条带;在高产沙区则存在局部低产沙斑块。充分反映了长江上游强烈的产沙空间变异性。

Abstract:

In order to avoid drawbacks existing in mapping specific sediment yield using direct interpolation of measured sediment load data at hydrological stations,this study takes the sediment erosion as a weight in interpolating the specific sediment yield.Using this method,a map of specific sediment yield in the upper Yangtze River is made from the records of sediment load at 152 hydrological stations in the period from 1956 to 1987 and other relevant data.Some of the records of sediment load are interpolated for making them comparable between stations.The results of cross validation show that the method advanced by this study is better than the direct interpolation method in spatially interpolating specific sediment yield.The map of specific sediment yield produced by this study reveals that two high sediment yield belts exist in the upper Yangtze River,one of which extends southward from the south Gansu to mountains in middle Sichuan and Yunnan Provinces,and the other spreads southeastward from Qinglin and Daba mountains,through hilly areas in the north middle Sichuan,to the Huangling anticline.Also,it is shown that there are local spots or strips of high sediment yield in areas with low sediment yield and verse visa,reflecting the highly spatial variability of sediment yield in the upper Yangtze River.
 

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 彭长青,冯金飞,卞新民. 基于遗传算法和GIS的县域水田种植制度空间布局优化[J]. 长江流域资源与环境, 2006, 15(1): 66 -70 .
[2] 唐 琦,虞孝感. 长江三角洲地区经济可持续发展问题初探[J]. 长江流域资源与环境, 2006, 15(3): 269 -273 .
[3] 张 政, 付融冰| 杨海真, 顾国维. 水量衡算条件下人工湿地对有机物的去除[J]. 长江流域资源与环境, 2007, 16(3): 363 .
[4] 王海云,高太忠,高京,黄群贤. 基于AHPLP法的南水北调中线水资源优化配置[J]. 长江流域资源与环境, 2007, 16(5): 588 .
[5] 张 燕, 张 洪, 彭补拙. 土地资源、环境与经济发展的协调性评价[J]. 长江流域资源与环境, 2008, 17(4): 529 .
[6] 许素芳,周寅康. 开发区土地利用的可持续性评价及实践研究——以芜湖经济技术开发区为例[J]. 长江流域资源与环境, 2006, 15(4): 453 -457 .
[7] 郝汉舟, 靳孟贵, 曹李靖, 谢先军. 模糊数学在水质综合评价中的应用[J]. 长江流域资源与环境, 2006, 15(Sup1): 83 -87 .
[8] 黄锡生,唐绍均. 三峡库区环境安全保护法律实施机制探讨[J]. 长江流域资源与环境, 2004, 13(6): 611 -615 .
[9] 张孝飞,林玉锁,俞 飞,李 波. 城市典型工业区土壤重金属污染状况研究[J]. 长江流域资源与环境, 2005, 14(4): 512 -515 .
[10] 刘耀彬, 李仁东. 现阶段湖北省经济发展的地域差异分析[J]. 长江流域资源与环境, 2004, 13(1): 12 -17 .