东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

AnnAGNPS模型数据库的建立——以黄土丘陵沟壑区砖窑沟流域为例

ISSN号：1672-2043
期刊名称：《农业环境科学学报》
时间：0
分类：X87[环境科学与工程—环境工程]
作者机构：[1]中国农业大学资源和环境学院,北京100094, [2]山西大学经济与管理学院,山西太原030006, [3]莱阳农学院农学系,山东青岛266109, [4]湖南农业大学资源环境学院,湖南长沙410128, [5]山西农业大学资源环境学院,山西太谷030801
相关基金：国家自然科学基金重大项目（39990490）

作者：贾宁凤[1,2], 李旭霖[3], 陈焕伟[1], 段建南[4], 李保国[1], 郭青霞[1,5]

关键词： ANNAGNPS, 数据库, 小流域, 黄土丘陵沟壑区, AnnAGNPS, database, small watershed, Hilly-gully Loess plateau

中文摘要：

年农业非点源污染模型（AnnAGNPs）是一个由美国农业部农业研究局和自然资源保护局联合开发的连续模拟来自流域的地表径流、沉积物、污染负荷的分布式参数模型，以位于黄土丘陵沟壑区的晋西北河曲县砖窑沟流域为例，建立了AnnAGNPS模型数据库，包括气候、地形、土壤、土地利用等相关参数的确定过程，充分使用了GIS、RS、农田调查等技术和方法．重点分析了降雨特征、模拟单元的划分、土壤相关参数的转换、农田操作措施、地表粗糙度、施肥、径流曲线值等因子，为该模型存中国的合理使用奠定了基础。

英文摘要：

This paper describes the database construction for the Annualized Agricultural Non-Point Source model, AnnAGNPS, using the Zhuanyaogou Watershed in Hilly-gully Loess Plateau as a case. AnnAGNPS is a tool for comparing the effects of implementing various conservation alternatives within the watershed. Cropping systems, fertilizer application rates, water and dissolved nutrients from point sources, sediment with attached chemicals from gullies, soluble nutrient contributions from feedlots, and the effect of terraced fields can be modeled. Version 1 of AnnAGNPS was released in February 1998. In this paper, AnnAGNPS model database are constructed including weather, topography, soil and land use in Zhuanyaogou watershed （29.16 km^2） on the Loess Plateau, China. The average annual rainfall erosivity is 1 439.8 MJ·mm·hm^-2·h^-1·a^-1, and the seasonal distribution is very centralized. The percentage of the sum of continual six semi-month rainfall erosivity to annual rainfall erosivity is 79.3%. Based on Digital Elevation Models （DEMs） and TopAGNPS module, a CSA of 1 ha and a MSCL of 50 m werc chosen to represent the existing stream network for the watershed, and 2021 cells and 864 reaches were defined to delineate the watershed. According to the available soil particle-size data assuming a lognormal distribution, Kachinsky classification system of soil texture, was interpolated or extrapolated into the USDA triangle one. Land use maps were interpreted from aerial photos and the field survey The field rotation sequence, typical cropland field operations, fertilizing type, and random roughness were, analyzed. The average runoff curve numbers of land use types were identified. The study has laid foundation for application of AnnAGNPS model in China.

同期刊论文项目