滇池流域耕地质量等级的时空变化  

Spatial-temporal Variation of Cultivated Land Quality Grades in Dianchi Lake Basin

作　　者：梁志妹 童江云 苏虹 杨伟 钱玲[1] 田云霞[1] LIANG Zhimei;TONG Jiangyun;SU Hong;YANG Wei;QIAN Ling;TIAN Yunxia(Institute of Resources and Environment,Kunming Academy of Agricultural Sciences,Kunming,Yunnan 650118;Kunming Center for Agricultural Product Quality&Safety,Kunming,Yunnan 650118,China)

机构地区：[1]昆明市农业科学研究院资源环境研究所,云南昆明650118 [2]昆明市农产品质量安全中心,云南昆明650118

出　　处：《贵州农业科学》2021年第10期111-116,共6页Guizhou Agricultural Sciences

基　　金：农业农村部耕地质量等级调查与评价项目。

摘　　要：【目的】探明滇池流域耕地质量等级空间分布及时空变化情况,为当地耕地质量保护、种植业结构调整、流域生态环境保护提供决策支持。【方法】通过构建滇池流域耕地质量数据库,使用空间分析、统计分析等方法,依据《耕地质量等级》国家标准,划分滇池流域耕地质量等级并分析其时空变化特征。【结果】滇池流域耕地质量平均等级2008年为4.92级,2018年为4.23级,2018年比2008年提升0.69级;2008年滇池流域耕地质量等级以中等级耕地为主,占全部耕地的47.66%;2018年滇池流域耕地质量等级以中、高等级耕地为主,占全部耕地的84.89%。【结论】滇池流域耕地质量各县(区)平均耕地质量等级2018年较2008年均有所提升,2008-2018年期间滇池流域平均耕地质量等级空间分布无明显变化,变化主要体现在各等级地面积和占比方面。【Objective】In order to provide the decision support for protecting cultivated land quality,adjusting planting structure and protecting ecological environment of Dianchi Lake Basin,the spatial distribution and spatial-temporal variation of cultivated land quality grades in Dianchi Lake Basin are explored.【Method】By constructing the database of cultivated land quality in Dianchi Lake Basin,using the methods of spatial analysis and statistical analysis,and according to the national standard of Cultivated Land Quality Grade,the cultivated land quality grades in Dianchi Lake Basin are divided,and the spatial-temporal variation characteristics are analyzed.【Result】The average grade of cultivated land quality in Dianchi Lake Basin in 2008 is 4.92,while the index in 2018 is 4.23,and the average grade of cultivated land quality in Dianchi Lake Basin in 2018 is 0.69 higher than that in 2008.The quality grade of cultivated land in Dianchi Lake Basin in 2008 is mainly medium grade,accounting for 47.66%of the total cultivated land;The quality grade of cultivated land in Dianchi Lake Basin in 2018 is mainly medium and high grade,accounting for 84.89%of the total cultivated land.【Conclusion】The average grade of cultivated land quality of each county(district)in Dianchi Lake Basin has been improved from^(2)008 to 2018.There is no obvious variation in spatial distribution of the average cultivated land quality grades in Dianchi Lake Basin,and the variation is mainly reflected in the area and proportion of each grade.

关 键 词：耕地质量等级 时空变化 滇池流域 昆明 

分 类 号：S155.4[农业科学—土壤学]