Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (11): 71-78.doi: 10.11924/j.issn.1000-6850.casb2020-0260

Special Issue: 资源与环境 耕地保护

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The Evaluation of Farmland Quality Grades for Reclaimed Paddy Based on ModelBuilder

Chen Zhao1,2(), Chen Jindong1,2(), Wu Leqin1,2, Yu Haibin3, Wang Qi1,2, Liu Ting1,2, Deng Nanrong1,2   

  1. 1Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650
    2National-regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650
    3School of Life Sciences, Guangzhou University, Guangzhou 510006
  • Received:2020-07-16 Revised:2020-09-18 Online:2021-04-15 Published:2021-04-13
  • Contact: Chen Jindong E-mail:chenc.09b@igsnrr.ac.cn;cjd8613@163.com

Abstract:

To quickly and accurately grasp the spatio-temporal changes of the consolidated farmland’s quality and improve the evaluating efficiency of farmland quality grades, the paper took the reclaimed paddy project area in Muhe Village, Longjie Town, Lianping County as the research area, combined the traditional farmland classification with ModelBuilder modeling method to construct a rapid evaluation framework system of farmland quality grades in the context of reclaimed paddy engineering projects. Based on the updated results of farmland quality grades in Lianping County in 2016, the study completed the ModelBuilder modeling process by combining the information of engineering data, farmland utilization status survey and field soil sampling inspection in the project area. The weighted average and spacing division methods were used to evaluate and compare the farmland quality grades in the study area. The evaluation results showed that the farmland quality grades were significantly improved after the implementation of reclaiming paddy project in the study area. The provincial natural, utilized and economic quality grade of farmland was promoted by an average of 1.31, 0.63 and 0.97, respectively, and the national natural, utilized and economic quality grade of farmland quality was promoted by an average of 1.06, 0.56 and 1.02, respectively. The research showed that ModelBuilder modeling could realize the automatic flow process of complex calculation of farmland quality evaluation for reclaimed paddy fields, and could quickly form the integrated results of charts and graphs. Compared with the traditional algorithm, ModelBuilder modeling has the characteristics of full automation, super-efficiency, high interaction and portability, and could be efficiently applied to the related work of complex farmland quality evaluation in combination with lightweight python programming.

Key words: reclaimed paddy, farmland quality grades, evaluation factors, ModelBuilder modeling, python

CLC Number: