基于限制因素分析的耕地质量提升分区——以长春市九台区为例

为划定耕地质量提升区域，以长春市九台区为研究区，根据2017年耕地质量等别年度更新及监测成果，利用改进的自然等提等潜力指数模型计算出研究区各耕地单元主导限制型，并确定其主导限制程度，依托ArcGIS平台按照整治难易程度划分耕地质量提升区，并提出针对性的建议。结果表明，九台区耕地存在14种主导限制型、20种主导限制程度与主导限制型组合。研究表明，划分出近期、中期以及远期三个时段耕地质量提升区，有利于合理安排土地整治时序，同时为耕地质量的提升和建设提供参考依据。

The classification and zoning of cultivated land quality improvement based on limiting factors: A case study of Jiutai District in Changchun City, China

In order to divide the cultivated land quality improvement area, Jiutai District in Changchun City was studied in this paper. Relying on the annual update and monitoring results of cultivated land quality in 2017 and using the improved natural potential index model, the dominant limiting type of each cultivated land unit in the study area was calculated and the extent of its dominant limitations were determined. Based on these results, cultivated land quality improvement area was determined to partition relied on the ArcGIS platform, and then some specific recommendations was made. The results showed that there were 14 dominant limiting types of cultivated land and 20 types of extent of dominant limitations combined with the dominant limiting type in Jiutai. Through the study of local conditions, the three periods of cultivated land quality improvement area of short-, medium- and long-term was divided which would provide reasonable scheduling for future land consolidation in Jiutai and reference for the improvement and construction of cultivated land quality.