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Method for observing preferential flows in arid and semi-arid alpine regions

A preferential flow and semi-arid technology, applied in the field of forest hydrological process research, to achieve the effect of compensating for dry season flow, developing and rationally utilizing water resources

Inactive Publication Date: 2013-05-22
GANSU PROVINCE ACAD OF QILIAN WATER RESOURCE CONSERVATION FORESTS RES INST
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for observing preferential flow in arid and semi-arid alpine areas, to observe and understand the process and mechanism of preferential flow in arid and semi-arid high-altitude areas with a simple and easy method, to understand the process of runoff production, and to propose ways to increase preferential flow , so as to mediate and utilize water resources more reasonably to solve practical problems that urgently need to be solved in industrial and agricultural production

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  • Method for observing preferential flows in arid and semi-arid alpine regions
  • Method for observing preferential flows in arid and semi-arid alpine regions

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Embodiment

[0045] Observation method of priority flow in arid and semi-arid alpine areas:

[0046] 1. Selection of priority flow observation site: The priority flow observation site is a closed slope separated from typical vegetation slopes, which is a rectangle. Select representative plots in the research area. According to different forest types and different forests Coverage, different soil conditions, different human activities, the area of ​​the preferential flow observation field can be 10 meters × 10 meters, 10 meters × 20 meters, 10 meters × 40 meters, 20 meters × 40 meters and other design specifications.

[0047] 2. Requirements for the construction site of the Priority Flow Observatory:

[0048] (1) Preserve the natural conditions. There are no small ditches, potholes, roads, mounds and depressions on the surface of the sloping land.

[0049] (2) Plant cover is consistent with soil characteristics.

[0050] (3) For slopes with a slope greater than 10°, expose to the west or ...

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Abstract

The invention discloses a method for observing preferential flows in arid and semi-arid alpine regions, which belongs to a technical measure for researching forest hydrology processes, water resources and sloping-field runoff characteristics. In a technique and a method for observing preferential flow observing fields in arid and semi-arid alpine regions disclosed by the invention, according to the theories of forest ecology and forest hydrology, the occurrence regularity and development regularity of snowmelt runoffs are observed and studied, and through observation, research and analysis, the change rule of preferential flows under the conditions of different weather conditions, different forest vegetations, different forest coverage rates, different manual acting modes and different slope positions and directions is revealed, thereby finding effective ways of increasing the flow rate of preferential flows, developing and rationally utilizing water resources, making up the flow rate of river channels in dry seasons, relieving the contradiction of water utilization for spring ploughing in the middle and lower reaches of rivers, and solving practical problems which are badly required to be solved in current agricultural production.

Description

technical field [0001] The invention provides a method for observing preferential flow in arid and semi-arid high mountainous areas, which belongs to a technical measure for studying forest hydrological process, water resources and slope runoff characteristics. Strengthening the study of forest soil priority flow can further reveal the mechanism of forest water conservation, deepen the understanding of forest regulation hydrological process in theory, and be used in forest management and prediction of land use change impact on water resources and water environment in practice. Provide theoretical and decision-making basis for forest management, returning farmland to forest, and vegetation restoration and reconstruction of natural forest protection projects. Background technique [0002] "Forest Ecosystem Positioning Research Method" edited by the Science and Technology Department of the Ministry of Forestry and published by China Science and Technology Press, and "China Ecos...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 刘贤德王顺利金铭张学龙
Owner GANSU PROVINCE ACAD OF QILIAN WATER RESOURCE CONSERVATION FORESTS RES INST
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