1990—2020年玉溪市人类活动强度时空演变分析  

Analysis of Spatial-Temporal Evolution of Human Activity Intensity in Yuxi from 1990 to 2020

作　　者：李兰 郭所兰 秦发侣 罗维佳 黎爱红 LI Lan;GUO Suolan;QIN Falv;LUO Weijia;LI Aihong(School of Geography and Land Engineering,Yuxi Normal University,Yuxi 653100,China;Key Laboratory of Interactions Analysis Between Crops and Soils,Yuxi 653100,China;Yuli Geospatial Information Consulting Co.Ltd,Yuxi 653100,China)

机构地区：[1]玉溪师范学院地理与国土工程学院,云南玉溪653100 [2]玉溪市农作物与土壤交互影响分析重点实验室,云南玉溪653100 [3]云南玉力空间信息咨询有限公司,云南玉溪653100

出　　处：《玉溪师范学院学报》2024年第6期86-92,共7页Journal of Yuxi Normal University

基　　金：云南省科技厅项目(202101BA070001-078);云南省大学生创新创业训练项目(S202311390025).

摘　　要：玉溪市是“川滇生态屏障”的重要组成部分,定量评价人类活动强度对玉溪生态环境的影响具有重要作用.以1990—2020年土地利用数据,运用建设用地当量系数法及空间自相关分析法分析近30年玉溪市人类活动强度的时空演变情况.结果显示:从土地利用变化情况来看,耕地面积减少,建设用地面积增加,林地和草地面积变化不显著,水域面积在2000年后变化不大,主要用地类型转换为耕地向建设用地转换;人类活动强度总体逐年升高,呈现出东部高,西部低的特点,县区之间人类活动强度差异较大且差异成扩大趋势;热点区主要分布在东部地区,冷点分布在西部地区,各地区间均存在热点区向次热点区转变,冷点区向热点区、次热点区转变现象.Yuxi is an important component of Sichuan-Yunnan Ecological Barrier,and quantitative assessment of the impact of human activity intensity on its ecological environment is of great significance.Based on the land use data from 1990 to 2020,the spatial and temporal changes of human activity intensity in Yuxi were analyzed using the construction land equivalent coefficient method and spatial autocorrelation analysis.The results show that:In terms of land use change,the area of arable land has decreased,while the area of construction land has increased.The changes in the areas of forest land,grassland and water bodies are not significant,with the main land use type conversion being from arable land to construction land.The overall human activity intensity in Yuxi has increased year by year,with higher intensity in the east and lower intensity in the western part.There are significant differences in the intensity of human activities among counties and districts,and the differences are expanding.The hot spots in Yuxi are mainly distributed in the eastern region,while the cold spots are in the western region.There are also transitions from hot spots to sub-hot spots and from cold spots to hot spots or sub-hot spots in various regions.

关 键 词：人类活动强度 建设用地当量系数法 时空演变 

分 类 号：X24[环境科学与工程—环境科学]