Three cylinder compensative evaporation and permeability instrument measurement

A compensating, barrel-mouth technology, applied in the direction of measuring devices, liquid/fluid solid measurement, instruments, etc., can solve the problems of lack of plant evapotranspiration observation system data, etc., and achieve the effect of simple operation and maintenance, small footprint and high precision

Inactive Publication Date: 2005-07-06
DALIAN UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

China's wetland research has just started, and there is a lack of systematic data on plant evapotranspiration observations in wetland environments

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Three cylinder compensative evaporation and permeability instrument measurement
  • Three cylinder compensative evaporation and permeability instrument measurement
  • Three cylinder compensative evaporation and permeability instrument measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] The method and specific implementation steps of measuring reed evapotranspiration in Zhalong Wetland by using a three-tube compensation lysimeter are as follows:

[0030] step 1

[0031] Put three stainless steel cylinders (the specifications are 1.5-2mm in wall thickness, 120cm in height, and 3000cm in cylinder mouth area 2 , 61.8cm in diameter, equivalent to the area and diameter of the standard E-601 evaporating dish) are installed in the reed growth area according to the layout of the center of the circle at an interval of 90 cm and the center of the circle on a straight line. When installing, put the cylinder on the reed 9 so as not to interfere with its growth environment. Evenly force the rotating steel cylinder handrail 6 to press into the lower layer of mud to a depth of 80-90cm. At this time, the free water surface 7 in the cylinder is 30-40cm away from the cylinder mouth. .

[0032] step 2

[0033] Will figure 1 , 2 The reeds 9 in the shown cylinders are...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for measuring evapotranspiration of plants in shallow water areas and infiltration of underlying surfaces by using a three-tube compensation lysimeter, which belongs to the fields of plant physiological and ecological monitoring and hydrological monitoring. It is characterized in that three steel tubes are directly pressed into the growth environment of aquatic plants. The states of the three tubes are: the upper open tube contains native plants, the upper open tube has a free water surface for processing plant stems, and the upper sealed tube contains free water surface at atmospheric pressure. The ultrasonic sensor is used to measure the water level change, and the plant evapotranspiration, water surface evaporation, and infiltration of the underlying surface are directly measured according to the mutual compensation relationship between the three cylinders, without destroying the growth state of the plants. Utilize the connecting water pipe to adjust the internal water level of each cylinder to be consistent with the natural water body. The plants in two of the steel cylinders are treated, the upper branches and leaves are cut off but the stems are kept, so that the net water surface area in the three cylinders is the same. The entire system is automatically powered on to collect and process data. It has the characteristics of low cost, easy maintenance and high precision.

Description

technical field [0001] The invention belongs to the technical fields of plant physiology, ecological monitoring and wetland meteorological and hydrological measurement. It involves automatic observation of evapotranspiration of aquatic plants in wetland environment, evaporation of free water surface, and infiltration in wetland environment. In particular, it involves the comparative observation methods of plant evapotranspiration, water surface evaporation, and wet infiltration. Background technique [0002] At present, the measurement methods of plant evapotranspiration, water surface evaporation and infiltration at home and abroad are mainly divided into four categories: [0003] The first category, the lysimeter method, uses the mass balance method to determine the evapotranspiration and infiltration of various plants. For example, Liu Shiping used it in "New Lysimeter and Its Application in the Research of Farmland Hydrological Process" lysimeter. The lysimeter method...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/296G01N7/00
Inventor 许士国王昊
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap