Estimation of monthly diffuse nutrient loads for a watershed in Turkey
Estimation of monthly diffuse nutrient loads for a watershed in Turkey
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土耳其流域每月扩散养分负荷的估算
DOI：
10.1111/j.1747-6593.2009.00214.x
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
I. Ozturk
中科院分区：
文献类型：
--
作者：
M. Gurel;A. Erturk;D. Seker;A. Tanik;A. Ekdal;C. Avşar;I. Ozturk
扩散污染具有复杂的性质，取决于农业、畜牧业和林业等各种土地使用活动。在这项研究中，另一种方法是适用于减少扩散营养负荷估计的空间不确定性。它应用于土耳其的梅伦流域，这是一个重要的流域，通过跨流域调水，将为大城市伊斯坦布尔提供额外的水。利用遥感（RS）和地理信息系统（GIS），每个子流域的月扩散养分负荷估计。由于施肥时间和气象条件的不规律，各月份的养分负荷估算值差异较大。还预测了养分负荷的空间分布的时间差异。该方法适用于流域保护研究，特别是在必要的研究应在短期内进行，有限的数据。在识别和确定扩散负荷方面的这种努力对于流域的可持续管理是重要的。
Diffuse pollution has a complex nature depending on various land‐use activities like agriculture, livestock breeding and forestry. In this study, an alternative methodology is applied for decreasing the spatial uncertainty of diffuse nutrient load estimations. It is applied in the Melen Watershed, Turkey, which is an important watershed from where additional water will be supplied for the megacity Istanbul via interbasin water transfer. Monthly diffuse nutrient loads were estimated for each subwatershed by utilizing remote sensing (RS) and geographical information systems (GIS). Estimated nutrient loads were considerably different in various months due to the temporally irregular fertilizer application and meteorological conditions. Temporal differences were also predicted in the spatial distribution of the nutrient loads. The methodology is applicable in watershed protection studies, especially where necessary etudes should be conducted in the short term and with limited data. Such efforts in identifying and determining the diffuse loads are important for sustainable management of the watershed.