| 摘要: |
| 为开展农用地适宜性评价，利用文献计量法，聚焦土地自然属性，基于气候、土壤、地形、水文等自然地理条件，梳理农用地适宜性影响因素，选取12个指标构建土地宜耕、宜园、宜林、宜草性评价体系。基于限制性因子法与1OAO原则筛选不适宜区，针对适宜区利用综合评价法考虑适宜程度，最终形成农用地适宜性评价标准，并以2020年石羊河流域为实证区开展验证。结果表明：2020年石羊河流域内仅有2.69%的土地属于耕地适宜区，42.96%不适宜发展耕地；园地适宜区有17.08%，不适宜区有19.12%；林地适宜区有10.27%，不适宜区有6.17%；研究区域内无草地不适宜区，适宜区有12.93%。本研究根据2020年研究区土地覆被现状与2010—2020年农用地转化等实际情况，验证上述评价结果是否合理，结果表明仅存在3.76%的耕地分布在耕地不适宜地区、林地不适宜区没有林地分布，农用地转入和转出也主要分布于一般适宜区和适宜区，基本上符合因地制宜发展，证实了评价指标体系及评价标准的合理性与可行性。因此，利用限制性因子法开展适宜性评价贴合实际，能够为未来农业生产空间布局提供支撑。 |
| 关键词: 农用地适宜性 限制性因子 农用地转化 石羊河流域 |
| DOI：10.11841/j.issn.1007-4333.2024.05.17 |
| 投稿时间：2023-10-18 |
| 基金项目:国家自然科学基金项目（42001234，42071252）；自然资源部信息中心项目（202213B210601） |
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| Study on the suitability evaluation of agricultural land based on restrictive factor method: Taking Shiyang River Basin as study case |
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CHEN Lu1, PAN Qidi1, GUO Wenhua2, LI Chao3, XIAO Fei2, ZHANG Yuhan2, SUN Danfeng1,4, SUN Qiangqiang1,4
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| (1.College of Land Science and Technology, China Agricultural University, Beijing 100193, China;2.Information Center of the Ministry of Natural Resources, Beijing 100136, China;3.China Land Surveying and Planning Institute, Beijing 100035, China;4.Center of Land Use and Management Research, China Agricultural University, Beijing 100193, China) |
| Abstract: |
| The evaluation of agricultural land suitability is crucial for adjusting agricultural spatial patterns and formulating land use strategies to meet the national food security requirements and the increasingly diverse food consumption demands of the people. Employing the method of bibliometrics， this study focuses on the natural attributes of land and analyzes the impact factors of agricultural land suitability based on natural geographic conditions such as climate， soil， topography， and hydrology. Twelve indicators were selected to establish the evaluation system for land suitability for cultivated land， garden， woodland and grassland. Based on the restrictive factor method and the 1OAO principle， unsuitable areas are screened. The comprehensive evaluation method was applied to assess the suitability of the suitable areas. Finally， the agricultural land suitability evaluation standards are formed， and verification is carried out using the Shiyang River Basin in 2020 as test area. The results show that： Only 2.69% of the land in the Shiyang River Basin in 2020 is suitable for cultivated land， and 42.96% is not suitable for the development of cultivated land. The suitable area for garden is 17.08%， and the unsuitable area is 19.12%. The suitable area of woodland is 10.27%， and the unsuitable area is 6.17%. There is no unsuitable area for grassland in the study area， and the suitable area is 12.93%. This study verified whether the above evaluation results are reasonable based on the actual situation of land cover in 2020 and agricultural land conversion from 2010 to 2020 in the study area. The results show that only 3.76% of cultivated land is distributed in unsuitable areas for cultivated land， and there is no woodland in unsuitable areas for woodland. The transfer of agricultural land in and out is also mainly distributed in generally suitable areas and suitable areas， which is basically in line with development based on local conditions. Confirmed The rationality and feasibility of the evaluation index system and evaluation standards are confirmed. Therefore， using restrictive factors to carry out suitability evaluation in this study is realistic and can provide support for future agricultural production spatial layout. |
| Key words: suitability of agricultural land restrictive factors agricultural land conversion Shiyang River Basin |
