摘要
【目的】了解云南省会泽县草地资源动态变化及进行驱动力分析。【方法】以2009年、2016年2期遥感数据为基础,以乡(镇)为研究尺度,采用草地资源综合动态变化度、地学信息图谱、Logistic回归模型对研究区草地资源变化及驱动力进行定量分析。【结果】2009-2016年,全县草地资源综合动态变化度为5.85%,其中变化较剧烈的为新街乡(14.21%)和田坝乡(14.00%)、相对较为稳定的为五星乡(2.53%)和金钟镇(3.41%);通过地学信息图谱分析,草地资源增加斑块面积为41 953.43 hm^(2),减少为20 818.92 hm^(2),净增加为21 134.51 hm^(2),其中新增草地资源来源地类中主要为林地和耕地,二者占比为56.85%、减少的草地资源主要流向为林地和耕地,二者占比为52.20%;影响草地资源增加的驱动力为年均降雨量、距公路的距离、坡度25°~90°、人均纯收入;影响草地资源减少的驱动力为年均降雨量、坡度25°~90°、距公路的距离;影响草地资源总体变化的驱动力为坡度25°~90°、坡度15°~25°、坡度6°~15°、坡度2°~6°、年平均降雨量、高程、距公路的距离。【结论】本研究可为今后会泽县生态环境保护和可持续发展提供数据支撑和决策依据。
【Objective】The purpose of this paper is to analyze the dynamic changes and driving forces of grassland resources in Huize county of Yunnan province.【Method】Based on the remote sensing data of 2009a and 2016a,the change and driving force of grassland resources in the study area were analyzed quantitatively by comprehensive dynamic change of grassland resources,geo-informatic spectrum and logistic re-gression model with the township as the research scale.【Result】From the data of 2009-2016,the comprehensive dynamic change of grass-land resources was 5.85%,in which Xinjie township(14.21%)and Tianba township(14.00%)were more drastic changes,Wuxing township(2.53%)and Jinzhong town(3.41%)were relatively stable;According to the geo-informatic spectrum,the increased patch area of grassland resources was 41953.43 hm 2,the decreased area was 20818.92 hm 2,and the net increase was 21134.51 hm 2,which the newly increased grassland resources mainly came from woodland and cultivated land,accounting for 56.85%,and the decreased grassland resources mainly flowed to woodland and cultivated land,accounting for 52.20%;From the driving forces of grassland resources change,the driving forces of grassland resources increase were annual rainfall,distance from highway,slope 25°-90°and per capita net income;The driving forces affecting the reduction of grassland resources were annual rainfall,slope 25°-90°and distance from highway;The driving forces affecting the overall change of grassland resources were slope 25°-90°,15°-25°,6°-15°,2°-6°,annual average rainfall,ele-vation and distance from highway.【Conclusion】This study can provide important basis for ecological environment protection and sustainable development of Huize county in the future.
作者
孙晓莉
赵然
和万荣
郑毅
袁磊
郭朝元
SUN Xiao-li;ZHAO Ran;HE Wan-rong*;ZHENG Yi;YUAN Lei;GUO Chao-yuan(College of Land and Spatial Information,Yunnan Land and Resources Vocational College,Yunnan Kunming 652501,China;College of Management,Xuzhou University of Technology,Jiangsu Xuzhou 221000,China;School of Information Science and Technology,Yun-nan Normal University,Yunnan Kunming 650500,China)
出处
《西南农业学报》
CSCD
北大核心
2021年第6期1309-1315,共7页
Southwest China Journal of Agricultural Sciences
基金
云南省教育厅科学研究基金项目(2020J0956,2021J0963,2020J0098)。
