Method for division of priority control areas for blockage of nitrogen transport from groundwater to surface water at the basin scale

A groundwater and control area technology, applied in the field of water environment science and water resources management, to reduce difficulty, reduce task load, and improve efficiency

Active Publication Date: 2017-06-30
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention makes up for the deficiency caused by neglecting the process of nitrogen pollution entering the surface water body with underground runoff in the prior art, and solves the problem of "how to identify and classify the high-risk areas of nitrogen discharge from groundwater to surface water from the basin scale"

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  • Method for division of priority control areas for blockage of nitrogen transport from groundwater to surface water at the basin scale
  • Method for division of priority control areas for blockage of nitrogen transport from groundwater to surface water at the basin scale
  • Method for division of priority control areas for blockage of nitrogen transport from groundwater to surface water at the basin scale

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with drawings and embodiments. The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] The process of dividing the priority control area of ​​a watershed-scale groundwater to surface water nitrogen transport blockade provided by the present invention is as follows: figure 1 shown.

[0050] The research area selected in this embodiment is the Huaihe River Basin, which is located in the central and eastern part of my country, between the Yangtze River Basin and the Yellow River Basin, including 35 cities and 222 counties (county-level cities, districts) in Henan, Anhui, Shandong, and Jiangsu 4 provinces , the watershed area is about 27×10 4 km 2 . The t...

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Abstract

The invention provides a basin-scale underground-water-to-surface-water nitrogen transportation blockage preferential control region division method. The method comprises the steps: determining a preferential control region recognition target region in a research region according to an interaction relation of underground water and surface water; in the preferential control region recognition target region, dividing the grade of underground water nitrogen pollution to form an underground water nitrogen pollution grade division map, and performing underground water nitrogen pollution special vulnerability estimation and grade division to form an underground water nitrogen pollution special vulnerability grade division map; based on a GIS technique, performing map layer overlapping on the underground water nitrogen pollution grade division map and the underground water nitrogen pollution special vulnerability grade division map; further dividing the grade of an underground-water-to-surface-water nitrogen transportation blockage preferential control region to form a preferential control region grade division map. The basin-scale underground-water-to-surface-water nitrogen transportation blockage preferential control region division method implements the division of a basin-scale underground-water-to-surface-water nitrogen transportation blockage preferential control region.

Description

technical field [0001] The invention relates to a basin-scale method for dividing priority control areas for blocking nitrogen transport from groundwater to surface water, and belongs to the fields of water environment science and water resources management. Background technique [0002] Nitrogen exists widely in nature and is an important fertilizer for agricultural production and a basic nutrient element for the growth and survival of humans, animals and plants. Along with the rapid development of the breadth and intensity of agricultural activities and industrial activities, the equivalent of nitrogen input into the environment by humans is increasing day by day. The nitrogen pollution of water environment has become a global environmental problem, especially in my country. [0003] Nitrogen excretion from groundwater to surface water is an important but neglected nitrogen pollution pathway. Previous studies have shown that nitrogen pollutants carried by groundwater may ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06F17/30
CPCG06F16/29G06F30/367
Inventor 郑倩琳马腾王妍妍闫雅妮廖曼
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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