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Ecological clean small watershed construction and evaluation method

An evaluation method and technology for small watersheds, applied in general water supply conservation, data processing applications, instruments, etc., can solve the problems of lack of evaluation methods for ecologically clean small watersheds and the inability to measure the effectiveness of ecologically clean small watersheds, and achieve good applicability, Investigate the effect of simplicity, scientific simplicity of method

Pending Publication Date: 2022-08-05
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for the construction and evaluation of ecologically clean small watersheds, which solves the problem of the lack of scientific and concise ecologically clean small watershed evaluation methods and the inability to measure the construction effectiveness of ecologically clean small watersheds

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  • Ecological clean small watershed construction and evaluation method
  • Ecological clean small watershed construction and evaluation method
  • Ecological clean small watershed construction and evaluation method

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Embodiment

[0090] The present invention further illustrates the usage of the present invention by taking a typical small watershed in the Loess Plateau in northwest China as an example.

[0091] The total area of ​​the basin is 70km 2 , before the construction of the ecologically clean small watershed, the soil erosion modulus of the surveyed watershed (t / (km 2 .a)), chemical oxygen demand (mg / L), sewage treatment rate (%), garbage treatment rate (%), fertilizer use intensity (kg / hm 2 ) and pesticide use intensity (kg / hm 2 ). According to "Surface Water Environmental Quality Standard GB3838-2002", "Technical Guidelines for Ecologically Clean Small Watershed Construction SL534-2013", "Small Watershed Governance Environmental Governance Evaluation Standard DB61 / 334-2003" and other standards, chemical oxygen demand, chemical fertilizer The benchmark values ​​of use intensity and pesticide use intensity are taken as 15mg / L and 250kg / hm respectively 2 and 4kg / hm 2 . According to the sur...

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Abstract

The invention belongs to the technical field of ecological environment protection, and relates to an ecological clean small watershed construction and evaluation method, which comprises the following steps: investigating a selected small watershed to be treated to obtain investigation data; constructing an ecological cleanliness index according to survey data, and diagnosing main environmental problems of the small watershed; according to the small-watershed land utilization current situation map, small-watershed treatment partition division is completed; according to the small watershed treatment subareas and main environmental problems, the treatment key points of all the subareas are determined, and construction measure arrangement is completed; and after the construction of the ecological clean small watershed is completed, carrying out evaluation index investigation again, calculating the ecological cleanliness index again, and comparing the two ecological cleanliness indexes to complete the evaluation of the construction effect of the ecological clean small watershed. The ecological cleanliness index and parameters provided by the invention are convenient to obtain, the method is scientific and simple, the applicability is good, the longitudinal treatment state comparison of the same small watershed can be carried out, and the transverse comparison between different small watersheds can also be carried out.

Description

technical field [0001] The invention belongs to the technical field of ecological environment protection, and relates to a construction and evaluation method of an ecologically clean small watershed. Background technique [0002] Small watersheds are the basic structure of geographical units, and the construction of small watersheds is the main battlefield of ecological civilization construction. The construction of ecologically clean small watersheds refers to a new type of comprehensive management model for small watersheds that integrates soil erosion control, water source protection, non-point source pollution prevention, water environment improvement, and human settlement improvement. The construction of ecologically clean small watersheds mainly involves the division of ecologically clean small watersheds, the layout of zoning measures, and the effect evaluation after construction. At present, there is still a lack of feasible governance zoning methods, so the layout ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0639G06Q50/26Y02A20/152
Inventor 高海东任宗萍王飞超李骁政潘金金李斌斌李平
Owner XIAN UNIV OF TECH
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