Water and soil loss monitoring method

Abstract

The invention discloses a water and soil loss monitoring method, which belongs to the field of water and soil loss monitoring. According to the technical scheme, the method is characterized by comprising the following steps of S1, regularly adopting a comprehensive investigation mode, arranging a plurality of sections by adopting a GPS lambda determining instrument in combination with tools such as a topographic map, a digital camera, a range finder, an altimeter, a marker post, a ruler and the like through field survey, selecting a plurality of soil loss monitoring points, arranging at leastthree section sampling points at the downstream of each soil loss monitoring point before raining, and arranging water collecting cylinders at the sampling points, and S2, arranging a flow monitoringmeter at the water outlet of the water collecting cylinder arranged in the step S1, and meanwhile, arranging a remote controller on the water collecting cylinder and enabling the remote controller with a control center. Thus, the method has the effects that the labor investment is reduced, and meanwhile, errors caused in the sampling process are reduced.

Description

technical field [0001] The present invention relates to a monitoring method, more specifically it relates to a monitoring method of water and soil loss. Background technique [0002] The use of land by humans, especially the unreasonable development and management of water and soil resources, has damaged the soil cover, and the exposed soil has been subjected to water erosion. Long-term water erosion will eventually expose the rocks, resulting in serious water and soil damage. drain. According to the two general surveys conducted by the Ministry of Water Resources on the area of ​​soil erosion in the country after the founding of the People's Republic of China. For the first time in 1983, the Ministry of Water Resources used remote sensing technology to carry out a census of soil erosion across the country. As of 1989, the total area of ​​various types of soil erosion in the country was 4.92 million square kilometers. According to the second census in 1992, the area invol...

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Problems solved by technology

[0003] Therefore, there are currently related methods and instruments for the monitoring of slope erosion gullies that can quantitatively monitor soil erosion gullies. In the reservoir, after the rain stops, it is measured by manual stirring, sampling, distillation, and weighing. This method of sampling is relatively difficult, which not only increases labor input, but also easily causes large errors during the sampling process. The measurement cycle is too long and the monitoring efficiency is low

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