Abstract

The main components of the annual water and nutrient balance are determined for the basin of the Kud’ma River, which has a landscape structure typical of the southern part of the forest zone. The contribution of the natural and anthropogenic factors to nutrient inputs into the Kud’ma River and their export from the catchment area is estimated. It is shown that forest tree waste is among the major natural factors of nutrient input into the Kud’ma River catchment area, while animal wastes are among anthropogenic factors. Nutrient export with river runoff, including its surface and underground components, is evaluated. It is found that the export of nitrogen and phosphorus from the catchment area has increased considerably in the recent years because of changes in the hydroclimatic conditions, which have caused a decrease in the surface runoff component and a considerable increase in its underground component.

中文翻译：

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库德玛河流域营养平衡的当前特征和动态。1.年度营养平衡

摘要

每年的水和养分平衡的主要部分是针对库玛河流域确定的，该流域具有典型的森林带南部景观结构。估算了自然和人为因素对养分输入库德玛河及其从集水区出口的养分的贡献。结果表明，林木废弃物是向库德玛河集水区输入养分的主要自然因素之一，而动物废弃物则是人为因素之一。对河水径流的营养物出口（包括其地表和地下部分）进行了评估。人们发现，由于水气候条件的变化，近年来流域的氮和磷的出口已大大增加，