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Method and system used for measuring influence contribution rate of forest litter on surface runoff element contents

A technology of surface runoff and element content, which is applied in the direction of material analysis by observing the influence of chemical indicators, color/spectral characteristic measurement, and analysis by making materials undergo chemical reactions, etc., can solve the problems of biodiversity reduction, rivers and lakes Ecosystem degradation, threats to human health, etc.

Active Publication Date: 2016-03-30
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

The resulting deterioration of water quality in water sources, reduction of biodiversity, and degradation of river and lake ecosystems have seriously affected regional drinking water safety, threatened human health, and become an important bottleneck restricting China's sustainable development.

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  • Method and system used for measuring influence contribution rate of forest litter on surface runoff element contents
  • Method and system used for measuring influence contribution rate of forest litter on surface runoff element contents
  • Method and system used for measuring influence contribution rate of forest litter on surface runoff element contents

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0024] The method and system described in the embodiments of the present invention are based on the background that rainfall is the main source of water in water sources such as lakes and reservoirs, and the forest litter layer is used as the main medium for surface runoff to collect and flow to water sources. On the premise of the influence of N, P and other chemical elements, the in-depth research on the influence of forest litter layer on the con...

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Abstract

The invention discloses a method and a system used for measuring influence contribution rate of forest litter on surface runoff element contents. The method comprises following steps: firstly, the system used for measuring influence contribution rate of forest litter on surface runoff element contents is constructed; runoff plots are uniformly covered with forest litter using grid method; artificial simulated rainfall or natural rainfall are adopted so as to carry out experiments; after starting of rainfall, standard rain gauges and collecting tanks are used for collecting rainfall and runoff synchronously, and collecting samples; the rainfall and runoff samples are subjected to pre-treatment so as to remove impurities; ultraviolet spectrophotometry and platinum antimony colorimetry are adopted to measure the total nitrogen concentration content and the total phosphor concentration content in the rainfall and runoff samples respectively. The method and the system are capable of separating influences of forest surface soil on surface runoff chemical elements such as N and P, and measuring influence contribution rate of forest litter on the contents of surface runoff chemical elements such as N and P effectively at the same time.

Description

technical field [0001] The invention relates to the technical field of geochemistry, in particular to a method and system for measuring the contribution rate of forest litter to the element content of surface runoff. Background technique [0002] With the development of my country's economy and society and the intensity of human activities, the water pollution of major drinking water sources such as lakes and reservoirs has become increasingly prominent. The eutrophication of water body, which is characterized by the large input of nutrients such as nitrogen (N) and phosphorus (P), has become the primary water pollution problem in water sources. According to the 2014 China Water Resources Bulletin, due to the large input of N, P and other elements, among the 121 major lakes and 661 major reservoirs that are highly developed and utilized in the country, 76.9% of them are lakes and 37.3% of them are reservoirs. in a state of eutrophication. The resulting deterioration of wat...

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Application Information

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IPC IPC(8): G01N21/33G01N21/78
CPCG01N21/33G01N21/78
Inventor 赵阳花圣卓张晓明杨涛曹文洪王向东韩小杰刘卉芳殷小琳
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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