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| 东北黑土区耕地系统健康评价及障碍因子分析——以肇源县为例 |
| Evaluation of cultivated land system health and diagnosis of its obstacle factors in the black soil region of northeast China：a case study of Zhaoyuan County，China |
| 投稿时间：2024-05-07 |
| DOI：10.13254/j.jare.2024.0293 |
| 中文关键词: 耕地系统 健康评价 压力-状态-响应 障碍因子 东北黑土区 |
| 英文关键词: cultivated land system health assessment pressure-state-response obstacle factor northeast black soil area |
| 基金项目:国家自然科学基金项目（41402297）；黑龙江省博士后资助项目（LBH-Z12032） |
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| 中文摘要: |
| 为科学评价黑土区耕地系统健康状况，诊断其障碍因子，本研究在分析耕地时空变化的基础上，基于压力-状态-响应（PSR）模型选取19个代表性指标构建耕地系统健康的评价指标体系，评估了东北黑土区的典型县域——肇源县2010—2020年耕地系统健康状况，并运用障碍度模型进一步分析了影响耕地系统健康的主要障碍因子。结果表明：与2010年相比，2020年肇源县耕地空间分布向南部扩张，耕地面积增加。2010—2020年，肇源县耕地系统健康状况整体呈现下降的态势，耕地系统健康指数由0.555 0 下降至 0.548 5；耕地系统健康状况具有明显的空间分异特征，空间分布格局由南高北低逐渐演变为东高西低。2010—2020年，肇源县耕地系统所面临的压力有所减弱，且耕地系统功能的稳定性有所下降、应对能力略有不足。2010—2020年，柴油使用量、土壤重金属污染、农业电力供应、第一产业从业人员比例、土壤有机质以及土壤pH是制约耕地系统健康的主要障碍因子。研究表明，2010—2020年肇源县耕地系统健康状况整体偏低，并呈现下降的趋势，存在多个制约耕地系统健康水平提升的障碍因子。因此，在未来耕地资源的利用与管理中应持续推广保护性耕作技术、完善农田基础设施、增加资金及技术投入，提高耕地系统健康水平，保障国家粮食安全。 |
| 英文摘要: |
| To scientifically evaluate the cultivated land system health in Zhaoyuan County, Heilongjiang Province based on analyzing the spatial and temporal changes of arable land, the pressure-state-response（PSR）model was used to select 19 representative indexes to construct an evaluation index system for the cultivated land system health, assess the cultivated land system health from 2010 to 2020, and further diagnose the main obstacle factors affecting the cultivated system health with the obstacle degree model. The results were as follows： compared with 2010, the spatial distribution pattern of arable land in Zhaoyuan County in 2020 expanded to the south and the area of cultivated land increased. From 2010 to 2020, the overall of the cultivated land system health in Zhaoyuan County showed a downward trend, with the health index of the cultivated land system declining from 0.555 0 to 0.548 5. Moreover, the cultivated land system health was characterized by obvious spatial differentiation, the spatial distribution pattern had gradually evolved from high in the south and low in the north to high in the east and low in the west. From 2010 to 2020, the pressure on the cultivated land system in Zhaoyuan County decreased as a whole, and the cultivated land system had become less functionally stable and less able to cope. From 2010 to 2020, the use of diesel fuel, heavy metal contamination of soil, agricultural electricity supply, the proportion of employees in the primary sector, soil organic matter, and soil pH were identified as the primary obstacles to maintaining cultivated land system health. The study concluded that the overall cultivated land systems health in Zhaoyuan County was low and showed a decreasing trend over the study period. Several obstacles hindered the improvement of the cultivated land systems health. Therefore, in the future utilization and management of the cultivated land systems, we should continue to popularize conservation tillage technology, improve farmland infrastructure, and increase financial and technological inputs in order to improve the health level of cultivated land systems and ensure national food security. |
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