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基于PCA的耕地功能冲突与协同识别——以湖北省为例
柯新利1, 马艳春1, 宋小青2,3, 唐兰萍1, 刘世超1, 金莹1
1.华中农业大学公共管理学院, 湖北 武汉 430070;2.中国地质大学(武汉)公共管理学院, 湖北 武汉 430070;3.国土资源评价与利用湖南省重点实验室, 湖南 长沙 410007
摘要:
[目的] 以湖北省为例,识别耕地功能之间的冲突与协同关系及各耕地功能的强弱,为耕地多功能利用与管理提供技术支撑及决策信息。[方法] 采用主成分分析法(PCA)进行识别论证。[结果] ①湖北省耕地的基本生活保障功能最强,生态安全维护功能次之,就业保障功能最弱;②湖北省耕地的基本生活保障功能、生态安全维护功能和就业保障功能之间、耕地的社会安定维护功能和粮食安全保障功能之间、耕地的就业保障功能、家庭经济贡献功能和国民经济贡献功能之间存在协同关系; ③湖北省耕地的社会安定维护和粮食安全保障功能束与家庭经济贡献和国民经济贡献功能束之间存在显著的冲突关系。[结论] PCA法不仅可以表达各耕地功能的强弱,更能直观表达耕地功能间的冲突与协同关系以及冲突与协同的程度,为耕地多功能利用与管理提供了一定的技术支撑及决策支持。
关键词:  耕地功能  冲突  协同  PCA
DOI:10.13961/j.cnki.stbctb.2018.06.050
分类号:
基金项目:国家自然科学基金项目(41371113;41101098);国家社会科学基金项目(13CGL092);中央高校基本科研业务费专项(2662017PY063);国土资源评价与利用湖南省重点实验室开放课题(SYS-MT-201801)。
Identification of Synergy and Tradeoffs Among Functions of Cultivated Land Based on PCA—A Case Study in Hubei Province
KE Xinli1, MA Yanchun1, SONG Xiaoqing2,3, TANG Lanping1, LIU Shichao1, JIN Ying1
1.College of Land Administration, Huazhong Agricultural University, Wuhan, Hubei 430070, China;2.School of Public Administration, China University of Geosciences(Wuhan), Wuhan, Hubei 430074, China;3.Hunan Key Laboratory of Land Resources Evaluation and Utilization, Changsha, Hu'nan 410007, China
Abstract:
[Objective] Taking Hubei Province as an example, the tradeoffs and synergy between cultivated land functions and the strength of each function were studied in order to provide technical supports and decision-making suggestions for the multi-purpose utilization and management of cultivated land.[Methods] The principal component analysis(PCA) was used to identify the relationship between functions.[Results] ① The basic living security function of cultivated land in Hubei Province is the strongest, the ecological security maintenance function is second, and the employment security function is the weakest. ② There is a synergy between the basic living security function, ecological security maintenance function and employment security function, between the social stability maintenance function and the food security function, between the employment security function, the family economic contribution function and the national economic contribution function, respectively. ③ The social stability maintenance and food security had a tradeoff with the family economic contribution and the contribution to the national economy.[Conclusion] The PCA method can not only express the strength of each function, but also intuitively express the relationships and their degree of interaction between functions. Therefore, it can provide certain technical support and decision support for the multi-purpose utilization and management of cultivated land.
Key words:  cultivated land functions  synergy  tradeoffs  PCA