A method and system for assessing crop resource utilization and environmental effects at the county level

Abstract

The present invention provides a method and system for assessing crop resource utilization and environmental effects at the county level. The method includes: determining the research area of ​​the county-level crops, obtaining parameter data of the research area; and calculating resource utilization evaluation indicators according to the parameter data of the research area. As a result, resource utilization evaluation indicators include nitrogen fertilizer resource utilization indicators and water resource utilization indicators; the calculation results of environmental effect evaluation indicators are obtained according to the parameter data of the study area, and environmental effect evaluation indicators include greenhouse gas emissions and gray water footprints; resource utilization evaluation indicators The calculation results of the calculation results and the calculation results of the environmental effect evaluation indicators are spatialized, and the evaluation is carried out through the spatial distribution results. The present invention constructs a resource and environment effect evaluation method applicable to the county level, spatializes the evaluation results, systematically evaluates the resource and environment problems caused by agricultural production, and clarifies the spatial distribution of water and fertilizer resource utilization and environmental effects.

Description

technical field [0001] The invention belongs to the technical field of agricultural resource environment evaluation, and in particular relates to a method and system for evaluating crop resource utilization and environmental effects at the county level. Background technique [0002] Water and fertilizer resources are considered to be an important factor affecting global food production. Previous studies have shown that there are spatial differences in the resource use and environmental effects of global crop production. Due to the complexity of the assessment of resource and environmental effects, the current evaluation method of agricultural resource and environmental effects on the point scale is mainly based on experimental observation. Taking the greenhouse gas emission of rice as an example, the greenhouse gas emission mainly comes from nitrogen oxide emission and CH 4 emission. Among them, nitrogen emission occurs when nitrogen application exceeds rice demand, and i...

AI Technical Summary

Problems solved by technology

First, the current agricultural experiment site monitoring research focuses on the indicators related to the resource and environmental effects of major food crops (such as rice, wheat, and corn, etc.), and there is a lack of related research on the resource and environmental effects of economic crops (such as vegetables, orchards, tea gardens, etc.)

Second, it is difficult to accurately assess the spatial distribution of resource and environmental effects in non-experimental fields based only on the monitoring data of the experimental sites

Third, since it is difficult to directly obtain the fertilizer application data of different food crops, vegetables, orchards, and tea gardens at the county level, it is difficult to fully consider crop production input factors in the construction of resource and environmental effect assessment indicators. Therefore, the spatial resolution of the assessment indicators Most of the research units are at the provincial level, which cannot reflect the spatial differences in the evaluation results of crop resource use efficiency and environmental effects at the county level.

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