| 摘要: |
| 为识别耕地的限制因素提高耕地建设效率，以鄱阳湖平原区南昌县为研究区，引入生态位理论，将生态位模型与指标偏离度相结合，构建基于生态位的高标准农田建设障碍因子诊断模型，并结合木桶原理进行研究区高标准农田建设的障碍因子诊断研究。结果表明:南昌县耕地自然质量障碍度处于0.20~1.00，总体较低；全县田间基础设施障碍度为0.10~1.00，整体偏低；全县景观格局、区位条件、便利程度障碍度均为0~1.00，景观格局、区位条件总体而言一般，便利程度整体上较好；全县高标准农田建设的障碍度处于0.30~1.00，仅有12.45%的障碍度≤0.50，整体上障碍度较高。因此，基于生态位的障碍因子诊断模型可以精准识别研究区的耕地障碍度现状，揭示研究区耕地的自然质量、田间基础设施、景观格局、区位条件、便利程度方面的不同状态，为区域高标准农田的整治与建设提供思路。 |
| 关键词: 土地评价 高标准农田 生态位 障碍因子 鄱阳湖平原 |
| DOI：10.11841/j.issn.1007-4333.2021.07.18 |
| 投稿时间：2020-10-19 |
| 基金项目:国家自然科学基金项目(71864016) |
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| Obstacle factor diagnosis of well-facilitated farmland construction based on ecological niche in Poyang Lake Plain |
|
XIA Minfeng1,YU Huimin1,LI Shuang1,DAN Chenglong2*
|
| (1.Institute of Territorial Spatial Survey and Planning of Jiangxi Province, Nanchang 330025, China;2.School of Tourism and Urban Management, Jiangxi University of Finance and Economics, Nanchang 330032, China) |
| Abstract: |
| To provide theoretical guidance for identifying the limiting factors of cultivated land and improving its construction efficiency, the obstacle factor diagnosis of well-facilitated farmland construction is carried out。. Nanchang county in Poyang Lake plain is taken as the research area. By introducing the ecological niche theory and combining the niche model with the index deviation degree, a diagnostic model of obstacle factors for well-facilitated farmland construction based on the niche is constructed. The obstacle factors diagnosis of well-facilitated farmland construction in the study area is then performed by combining the wooden barrel principle. The results showed that: The obstacle degree of natural quality of farmland in Nanchang county was generally low, which was ranged from 0. 20 to 1. 00. While the field infrastructure was pretty low, which was within 0. 10-1. 00. The landscape pattern, location condition and convenience degree were both within 0-1. 00. The landscape pattern and location condition were generally low, whereas the convenience degree was generally good. The obstacle degree of well-facilitated farmland construction in the whole county was in 0. 30-1. 00, among which only 12. 45%≤0. 50 and it was high on the whole. Therefore, the current status of obstacle degree for cultivated land in the research area can be accurately identified based on the niche-based diagnostic model of obstacle factors, meanwhile the situations of natural quality, infrastructure, landscape pattern, convenience and location for farmland in the study area are also revealed, which provided references for the improvement and construction of well-facilitated farmland in the region. |
| Key words: land evaluation well-facilitated farmland ecological niche obstacle factor Poyang Lake Plain |
