利用SPSS(Statistical Program for Social Sciences)软件的主成分分析和动态逐步聚类方法对楚雄州烤烟种植区进行了生态类型的区划试验,结果在GIS平台上输出。区划结果表明,楚雄州可划分为低海拔富热富湿植烟区、中海拔温暖植烟区、高...利用SPSS(Statistical Program for Social Sciences)软件的主成分分析和动态逐步聚类方法对楚雄州烤烟种植区进行了生态类型的区划试验,结果在GIS平台上输出。区划结果表明,楚雄州可划分为低海拔富热富湿植烟区、中海拔温暖植烟区、高海拔温凉植烟区和中低海拔富热区4个烤烟可种植区和1个燥热非植烟区。展开更多
Based upon ArCGIS,the vertical spatial transfer law of cultivated land in Yunnan was studied through referring to three periods of remote sensing data of Land-Use and Land-Cover Change(LUCC) in Yunnan in 1986,1995 a...Based upon ArCGIS,the vertical spatial transfer law of cultivated land in Yunnan was studied through referring to three periods of remote sensing data of Land-Use and Land-Cover Change(LUCC) in Yunnan in 1986,1995 and 2000,Digital Elevation Model(DEM) of Yunnan Province and LUCC data in Yunnan from 2000 to 2008.The main factors that promote vertical spatial transfer law of cultivated land were analyzed by using SPSS,and the influence of policies and government acts upon the change of cultivated land was clarified.The findings indicated that for Yunnan cultivated land there is a trend that in the vertical direction steep slope areas and gentle slope areas divert into mid-slope areas.The primary factor influencing the vertical spatial transfer of cultivated land was policies and government acts.Also,the gradient of ground,total population and number of agriculture employed persons were also main factors in influencing the change of cultivated land,whose influence was obviously below policies and government acts.展开更多
以楚雄州烤烟种植区为研究对象,利用SPSS(Statistical Program for Social Sciences)软件的主成分分析和动态逐步聚类方法,进行生态、气候类型的区划试验研究,区划结果在GIS平台上输出。该方法综合了气候、地理和土壤等多种生态因子,区...以楚雄州烤烟种植区为研究对象,利用SPSS(Statistical Program for Social Sciences)软件的主成分分析和动态逐步聚类方法,进行生态、气候类型的区划试验研究,区划结果在GIS平台上输出。该方法综合了气候、地理和土壤等多种生态因子,区划结果更客观定量,可被延伸引用。区划中排除了人为干扰因素,结果将楚雄州按生态类型划分为低海拔富热、富湿植烟区,中海拔温暖植烟区,高海拔温凉植烟区和中低海拔富热区4个烤烟可种植区和1个燥热非植烟区,区划结果与区内多年的种植实践相一致,对指导烟叶生产具有现实意义。展开更多
文摘利用SPSS(Statistical Program for Social Sciences)软件的主成分分析和动态逐步聚类方法对楚雄州烤烟种植区进行了生态类型的区划试验,结果在GIS平台上输出。区划结果表明,楚雄州可划分为低海拔富热富湿植烟区、中海拔温暖植烟区、高海拔温凉植烟区和中低海拔富热区4个烤烟可种植区和1个燥热非植烟区。
基金Supported by National Natural and Scientific Foundation Project(40761009)Yunnan Province Applied Fundamental Research Project(2007D081M)Assisted by the Project of Yunnan Province Department of Education(06Y045A)~~
文摘Based upon ArCGIS,the vertical spatial transfer law of cultivated land in Yunnan was studied through referring to three periods of remote sensing data of Land-Use and Land-Cover Change(LUCC) in Yunnan in 1986,1995 and 2000,Digital Elevation Model(DEM) of Yunnan Province and LUCC data in Yunnan from 2000 to 2008.The main factors that promote vertical spatial transfer law of cultivated land were analyzed by using SPSS,and the influence of policies and government acts upon the change of cultivated land was clarified.The findings indicated that for Yunnan cultivated land there is a trend that in the vertical direction steep slope areas and gentle slope areas divert into mid-slope areas.The primary factor influencing the vertical spatial transfer of cultivated land was policies and government acts.Also,the gradient of ground,total population and number of agriculture employed persons were also main factors in influencing the change of cultivated land,whose influence was obviously below policies and government acts.
文摘以楚雄州烤烟种植区为研究对象,利用SPSS(Statistical Program for Social Sciences)软件的主成分分析和动态逐步聚类方法,进行生态、气候类型的区划试验研究,区划结果在GIS平台上输出。该方法综合了气候、地理和土壤等多种生态因子,区划结果更客观定量,可被延伸引用。区划中排除了人为干扰因素,结果将楚雄州按生态类型划分为低海拔富热、富湿植烟区,中海拔温暖植烟区,高海拔温凉植烟区和中低海拔富热区4个烤烟可种植区和1个燥热非植烟区,区划结果与区内多年的种植实践相一致,对指导烟叶生产具有现实意义。