Discussion on conservation and improvement of cultivated land quality based on limiting factor zoning：a case study of Hefeng County， Hubei Province
ZUO Qian1， ZHOU Yong1， WEI Zhao2， YUAN Guohua2
1.Key Laboratory for Geographical Process Analysis & Simulation of Hubei Province/School of Urban and Environment Sciences， Central China Normal University， Wuhan 430079， China；2.Bureau of Land and Resources Management of Hubei Province， Wuhan 430071， China
Abstract：This article uses Hefeng County as the research area， and uses land plots as the research scale. It starts from the site conditions and other aspects to build an index system for evaluating the quality class of cultivated land. Using degree model and partial autocorrelation method， the cultivated land quality status and spatial distribution characteristics in the research area are revealed， and the leading limiting factors hindering the improvement of cultivated land quality in hefeng county are identified with the restricted factor type area divided. Finally， previous analytical results are combined to divide the cultivated land quality improvement zones and discuss measures to improve the cultivated land quality in different zones. The results showed as follows. 1) The whole cultivated land quality class in Hefeng County is mainly medium class， and the spatial distribution of different cultivated land quality is significantly different， showing a pattern of high in the north and southwest while low in the northwest and southeast. 2) There are a total of 7 "leading limiting factors-secondary limiting factors" type partitions with the leading limiting factors being irrigation capacity and available phosphorus. 3) The existing cultivated land is divided into core reserve area， moderate improvement area and key control area of three primary classes and eight secondary classes. According to the characteristics of the each partition key and nutrient boost to soil and water conservation measures. Research results can provide Hefeng County and mountainous area southwest of Hubei Province of cultivated land quality improvement and protection regulation provides methods for reference.
左 岍,周 勇,魏 昭,原国华. 基于限制因素分区的耕地质量保育与提升探讨——以湖北鹤峰县为例[J]. 华中师范大学学报(自然科学版), 2020, 54(4): 679-689.
ZUO Qian,ZHOU Yong,WEI Zhao,YUAN Guohua. Discussion on conservation and improvement of cultivated land quality based on limiting factor zoning：a case study of Hefeng County， Hubei Province. journal1, 2020, 54(4): 679-689.
2020, Vol. 54 
