Abstract
Evaluating the assessing results’ rationality for farmland quality (FQ) is usually qualitative and based on farmers and experts’ perceptions of soil quality and crop yield. Its quantitative checking still remains difficult and is likely ignored. In this paper, FQ in Xiuwu County, the Northwest Henan Province, China was evaluated by the gray relational analysis (GRA) method and the traditional analytic hierarchy process (AHP) method. The consistency rate of two results was analysed. Research focused on proposing one method of testing the evaluation results’ rationality for FQ based on the crop yield. Firstly generating a grade map of crop yield and overlying it with the FQ evaluation maps. Then analysing their consistency rate for each grade in the same spatial position. Finally examining the consistency effects and allowing for a decision on adopting the results. The results showed that the area rate consistency and matching evaluation unit numbers between the two methods were 84.68% and 87.29%, respectively, and the space distribution was approximately equal. The area consistency rates between crop yield level and FQ evaluation levels by GRA and AHP were 78.15% and 74.29%, respectively. Therefore, the verifying effects of GRA and AHP were near, good and acceptable, and the FQ results from both could reflect the crop yield levels. The evaluation results by GCA, as a whole, were slightly more rational than that by AHP.
Highlights
The soil quality discussion that has developed since the 1970s has raised important issues about soil assessment and management practices in many countries [1,2,3]
We examine the consistency and determine whether to adopt the evaluation results
Compared with the qualitative, more subjective and poor maneuvrability of the existing check measures for farmland quality (FQ) evaluation results, the method put forward in this paper would be more precise and objective
Summary
The soil quality discussion that has developed since the 1970s has raised important issues about soil assessment and management practices in many countries [1,2,3]. The Food and Agriculture Organization (FAO) of the United Nations [4], the United States Department of Agriculture [5], and the European Union [6] all identified soil quality as a work focus and used soil quality evaluation as an important index for assessing soil quality changes and to promote. Verifying the Results' Rationality in Evaluating Farmland Quality
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