|
|||||
|
|
| 几种降雨侵蚀力模型在潋水河流域的对比研究 | |
| 引用本文： | 田刚,梁音,陈效民,刘通.几种降雨侵蚀力模型在潋水河流域的对比研究[J].土壤学报,2010,47(1):7-12. |
| 作者姓名： | 田刚 梁音 陈效民 刘通 |
| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京,210095;中国科学院南京土壤研究所,南京,210008 2. 中国科学院南京土壤研究所,南京,210008 3. 南京农业大学资源与环境科学学院,南京,210095 |
| 基金项目： | 国家重点基础研究发展计划项目“中国主要水蚀区土壤侵蚀过程与调控研究”(2007CB407206)、国家自然科学基金“红壤中尺度流域土壤侵蚀宏观监测方法的对比研究”（40971163）中国科学院知识创新工程前沿项目“南方红壤区数字小流域的建立与侵蚀定量研究”(ISSASIP0602)资助 |
| 摘 要： | 在分析江西兴国县潋水河流域东村水文站1967～2005年逐日降雨资料的基础上,利用国内外常用的6种降雨侵蚀力计算模型,即周伏建等(A)、章文波等(B)、吴素业(C)、史志华等(D)、Wischmeier等(E)和CREAMS(F)模型,分别计算其降雨侵蚀力大小。用有效系数和相对偏差对各模型的计算结果进行了分析。结果表明:模型C比较理想,在计算降雨侵蚀力时具有较高的有效系数(0.97)和较低的相对偏差(0.073)。月雨量模型(A、C、E)与日雨量模型(B、D、F)相比,具有较高的有效系数和较低的相对偏差,说明月雨量模型要优于日雨量模型。从趋势系数来看,这两类模型的趋势系数均值分别为0.058和0.196,均为正值,说明39年来潋水河流域年降雨侵蚀力的年际变化呈增加趋势;后者高于前者,说明用日雨量模型计算的年R值,其增加趋势高于月雨量模型。 |
| 关 键 词： | 潋水河流域 土壤侵蚀 降雨侵蚀力 月雨量模型 日雨量模型 |
Comparative study on several rainfall erosiveness models in Lianshui Basin |
|
| Tian Gang,Liang Yin,Chen Xiaomin and Liu Tong.Comparative study on several rainfall erosiveness models in Lianshui Basin[J].Acta Pedologica Sinica,2010,47(1):7-12. | |
| Authors: | Tian Gang Liang Yin Chen Xiaomin and Liu Tong |
| Institution: | 1 College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China)(2 Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China) |
| Abstract: | Based on the data of daily rainfall collected by the Dongcun Hydrological Station in Lianshui Basin, Jiangxi Province from 1967 to 2005, Values of rainfall erosiveness were calculated respectively using Zhou Fujian et al. (Model A), Zhang Wenbo, et al. (Model B),Wu Suye (Model C), Shi Zhihua, et al. (Model D), WISCHMEIER, et al (Model E), and CREAMS (Model F). Results of the calculations were analyzed, using effective coefficient and relative deviation, demonstrating that Model C is relatively quite ideal, for its effective coefficient is higher, reaching 0.97 and its relative deviation lower, being 0.073. The monthly rainfall models (A, C, E), in comparison with the daily rainfall models (B, D, F), are higher in effective coefficient and lower in relative deviation, which prove that the former are superior to the latter. However, both groups are positive in trend coefficient, being 0.058 and 0.196, respectively, indicating an increasing trend in rainfall erosiveness in the Lianshui River Valley during the 39 years. The latter one is higher than the former, which explains that the use of the daily rainfall models would get higher R values than the use of the monthly rainfall models. |
| Keywords: | Lianshui basin Soil erosion Rainfall erosiveness Daily rainfall models Monthly rainfall models |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《土壤学报》浏览原始摘要信息 | |
| 点击此处可从《土壤学报》下载免费的PDF全文 | |