摘要
景观连通性对区域生态安全具有重大影响。以生态大省江西省为研究对象,基于2000、2005、2010、2015、2020年的土地利用数据,应用PLUS模型预测江西省2030年土地利用格局,形态学空间格局分析法识别生态源地,最小累积阻力模型(MCR)提取生态廊道、获取景观连通性空间分布图,分析2020—2030年江西省土地利用和景观连通性时空变化特征。结果表明:2020—2030年,江西省土地利用变化以耕地和建设用地面积增加,林地减少为主,尤其是宜春市。这期间,江西省景观格局的核心区面积和孤岛面积同时增加,在景观连通性小幅上升的同时破碎化程度加剧。2020年和2030年江西省中等级以上连通区面积均占总面积69%以上,整体表现较好,但江西省景观生态廊道总长度和数量均略微减少。研究结果可以为国土空间规划、城市景观空间格局设计等提供依据和参考。
Landscape connectivity has a significant impact on regional ecological security.Taking Jiangxi Province,a major ecological province,as the research object,based on land use data in 2000,2005,2010,2015,and 2020,the PLUS model was applied to predict the land use pattern of Jiangxi Province in 2030.Morphological spatial pattern analysis was used to identify ecological source areas,and the minimum cumulative resistance model was used to extract ecological corridors and obtain spatial distribution maps of landscape connectivity.The spatiotemporal changes in land use and landscape connectivity in Jiangxi Province from 2020 to 2030 were analyzed.The results show that from 2020 to 2030,the land use change in Jiangxi Province is mainly characterized by an increase in arable land and construction land area,and a decrease in forest land,especially in Yichun City.During this period,the core area and island area of the landscape pattern in Jiangxi Province increased simultaneously,with a slight increase in landscape connectivity and an intensification of fragmentation.In 2020 and 2030,the area of intermediate level and above connected areas in Jiangxi Province accounted for over 69%of the total area,showing overall better performance.However,the total length and quantity of landscape ecological corridors in Jiangxi Province have slightly decreased.The research results can provide a basis and reference for national spatial planning,urban landscape spatial pattern design,etc.
作者
张建民
ZHANG Jianmin(Urban and Rural Planning Research Center of Guangfeng District,Shangrao City,Shangrao 334600,China)
出处
《经纬天地》
2024年第2期52-56,共5页
Survey World
