土壤与养分流失综合监测方法在密云水库流域的应用

doi:10.11867/j.issn.1001-8166.2007.03.0241

地球科学进展 ›› 2007, Vol. 22 ›› Issue (3): 241 -248. doi: 10.11867/j.issn.1001-8166.2007.03.0241

夏立忠 ¹,卜兆宏 ¹,张祖兴 ²,杨林章 ¹,杨晓勇 ²,姜小三 ³

1.中国科学院南京土壤研究所，江苏南京 210008;2.水利部海河水利委员会，天津 300170;3.南京农业大学资源与环境科学学院，江苏南京 210095

收稿日期:2006-08-28 修回日期:2007-01-23 出版日期:2007-03-10
通讯作者: 夏立忠（1964-），男，安徽无为人，副研究员，从事土壤生态学和面源污染方面研究.E-mail: lzxia@issas.ac.cn E-mail:lzxia@issas.ac.cn
基金资助:
国家自然科学基金面上项目“监测水土流失的定量新方法”(编号：40171060)资助.

Application of Integrated Method to Assessment of Soil and Nutrient Losses in Miyun Reservoir Basin

XIA Li-zhong ¹, BU Zhao-hong ¹, ZHANG Zu-xing ², YANG Lin-zhang ¹, YANG Xiao-yong ², JIANG Xiao-san ³

1.Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;2.Haihe Water Conservancy Commission, Ministry of Water Resources, Tianjin 300170,China;3.College of Resources and Enviromental Sciences, Nanjing Agriculture University, Nanjing 210095,China

Received:2006-08-28 Revised:2007-01-23 Online:2007-03-10 Published:2007-03-10

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土壤与养分流失综合监测方法是根据通用流失方程的基本原理，在对我国中东部南北不同环境条件下大量周年实测数据的统计、分析基础上建立的适合我国南北地区的水土流失与面源污染一体化定量监测方法。本研究采用该方法对密云水库流域2001年度的土壤和氮素养分流失的空间分布，不同土地利用方式对土壤和氮素养分流失的影响，以及泥沙、养分的入库量进行了系统的监测，且利用水文站的实测数据对监测结果进行检验。结果显示，该监测方法对土壤和氮素流失监测的相对误差分别为2.75%~19.63%和-18.78%，监测效果较好。该监测方法具有技术先进、方便、实用、可更新性强和效果好的诸多特点，在我国现有相关资料积累条件下，适用范围较广。随着相关研究的进一步深入，该监测方法可通过改进满足更高时空监测需求，具有较好的应用前景。

关键词: 土壤与养分流失综合监测, 密云水库流域, 土壤与氮素流失

Based on the universal soil loss equation(USLE) and the revised universal soil loss equation ( RUSLE), integrated monitoring method for assessment of soil and nutrients losses has been calibrated by statistics of the data from runoff experiment plots and hydrological monitoring stations in the provinces of Shandong, Jiangsu, Fujian, Jiangxi and Hebe in China an area of more than 200 thousand km². In this paper, the method was used for the assessment of soil and nitrogen losses in 2001in Miyun Reservoir Basin(115°25′E~117°35′E , 40°20′N~41°37′N), which possess an area of 15 365 km²and is located in Hebei province. The spatial distribution of soil and nitrogen losses was calculated by GIS,RS and GPS technology and models, and the sand and nitrogen delivering ratios were also calculated. The accuracy of the monitoring method was tested by comparing the simulated values with that observed by hydrological monitoring station for the sediment and nitrogen delivered out off the catchment. The total simulated soil and nitrogen loss of Miyun Reservoir basin in 2001 was 14 617 782.10 t/a and 19 527.90 t/a respectively, and the sediment and nitrogen delivered into the reservoir was 634 332.80 t/a and 612.97 t/a respectively. The test showed the relative error of the simulated values with that observed by hydrological monitoring station was 2.75%~19.63% and -18.78% for sediment and nitrogen delivered into the reservoir in 2001 respectively. Because of its preferable accuracy, convenience, timesaving, easy for updating, the integrated monitoring method for the assessment of soil and nutrients losses is prospective for application in the erosive regions. 

Key words: Integrated monitoring method, Miyun reservoir basin, Soil and nitrogen losses.

中图分类号:

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