摘要
基于巢湖流域生态系统类型分布的持续观测数据,从年变化率、动态度和转移矩阵3个方面分析2010—2020年巢湖流域生态系统类型的时空变化特征,并剖析变化的驱动因素。结果表明,2010—2020年巢湖流域生态系统类型面积变化最为明显的趋势是农田面积的持续大幅缩减和城镇用地的急剧大幅扩张。生态系统动态度(LC值)较大的是其他建设用地和城镇用地,全巢湖流域LC值为0.5%。10年间巢湖流域开发建设对农业和生态空间的大量挤占主要发生在城市周边。此外,流域内农田与湿地的相互转化也较明显。城市化以及工业和矿山开发是巢湖流域近10年最为主要的生态系统类型变化的驱动因素。
Based on the continuous observation data of the distribution of ecosystem types in Chaohu Lake Basin,this paper analyzed the temporal and spatial variation characteristics of ecosystem types in Chaohu Lake Basin from 2010 to 2020 from three aspects(annual change rate,dynamic change index and transfer matrix),and analyzed the driving factors of change.The results showed that from 2010 to 2020,the most obvious trend of ecosystem type area change in Chaohu Lake Basin was the continuous sharp reduction of farmland area and the sharp expansion of urban land.The ecosystem dynamic change index(LC value)was large,which was other construction land and urban land,and the LC value of the whole Chaohu Lake Basin was 0.5%.In the past 10 years,the development and construction of Chaohu Lake Basin had occupied a large amount of agricultural and ecological space,mainly around the city.In addition,the mutual transformation of farmland and wetland in the basin was also obvious.Urbanization and industry and mine development were the most important driving factors for the change of ecosystem types in Chaohu Lake Basin in recent 10 years.
作者
袁步先
吴楠
程鹏
YUAN Bu-xian;WU Nan;CHENG Peng(Anhui Provincial Academy of Eco-Environmental Science Research,Hefei,Anhui 230071)
出处
《安徽农业科学》
CAS
2022年第7期59-64,77,共7页
Journal of Anhui Agricultural Sciences
基金
安徽省生态环境科学研究院资金资助项目“基于遥感的巢湖蓝藻水华时空分布变化监测技术研究”(HKYKY2020-03)。
关键词
巢湖流域
生态系统类型
动态度
转移矩阵
时空变化特征
驱动力
Chaohu Lake Basin
Ecosystem types
Dynamic degree
Transition matrix
Temporal and spatial variation characteristics
Driving force
