A Remote Sensing Method for Dynamic Monitoring of Irrigated Area in Spring Irrigation Period Based on Surface Temperature
A technology of surface temperature and irrigation area, applied in data processing applications, instruments, calculations, etc., can solve problems such as hysteresis, and achieve the effect of improving management, ensuring normal growth, and increasing yield
Active Publication Date: 2022-04-12
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Most of these technologies are based on vegetation index to monitor the irrigated area, but the change of vegetation index is not only related to irrigation, but also related to soil productivity, fertilizer application, crop type and sowing time, etc. The reaction also has a certain hysteresis
At the same time, the above method of using vegetation index to monitor the irrigated area requires a growing season or a longer time series of data to support the overall monitoring of the irrigated area in the past. dynamic monitoring of
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0040] In the embodiment of the present invention, the typical canal irrigation irrigation area in the semi-arid area of Northwest my country, that is, the Donglei second-stage pumping yellow irrigation area, is selected as the research area, and the remote sensing identification and extraction of the spring irrigation area from 2011 to 2018 is carried out, and the accuracy is compared with statistical data. It has been verified that the accumulative irrigated area (mu times) remote sensing monitoring results in spring years with better data can reach more than 95% accuracy.
[0041] The second phase of Donglei pumping yellow irrigation area is located in the dry plateau area in the eastern part of Guanzhong, Shaanxi Province, between 109°10'-110°10' east longitude and 34°41'-35°00' north latitude. The terrain slopes from nort...
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
Login to View More Abstract
The invention discloses a remote sensing method for dynamic monitoring of irrigation area in the spring irrigation period based on surface temperature: step 1, data acquisition and preprocessing; step 2, determining the daily difference threshold value of surface temperature for irrigation judgment, specifically using the surface temperature satellite The threshold value for irrigation judgment is obtained by counting the daily difference of surface temperature in the rain-fed planting area under the multi-year precipitation events on the remote sensing image; step 3, extracting the irrigation area based on the satellite remote sensing data of the daily difference of surface temperature. The invention has the advantage of being sensitive to soil water content and its changes, and is suitable for arid and semi-arid areas with less precipitation. The method can be used to monitor the spatial distribution of the irrigated area in real time, and can monitor the real-time spatial distribution of the irrigated area within the scope of the irrigation area. You can keep abreast of the irrigation situation in the irrigated area at any time, and you can get the intensity map of the irrigated area, the distribution map of the total irrigated area, etc.
Description
technical field [0001] The invention relates to a remote sensing method for dynamic monitoring of irrigation area in spring irrigation period based on surface temperature, in particular to a method for dynamic monitoring of irrigation area in spring irrigation period based on climate data, crop phenology characteristics and surface temperature remote sensing data, belonging to the technical field of water conservancy remote sensing. Background technique [0002] Irrigation water consumes nearly 75% of the world's freshwater resources and provides 40% of food production on about 17% of the world's arable land. And with population growth and economic development, irrigation water consumption is expected to continue to increase in order to increase agricultural production. The irrigated area map enables us to keep abreast of the irrigation situation of the irrigated area and the local drought situation, so that relevant departments can take timely measures. Accurately grasping...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0639G06Q50/02
Inventor 宋文龙吕娟段媛媛田琳静卢奕竹李焕新杜鹏飞
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES