基于景观格局的红壤丘陵区生态风险评价——以赣州市为例  

Ecological Risk Assessment of Red Soil Hilly Region Based on Landscape Pattern:A Case Study of Ganzhou

作　　者：刘志强 李沛鸿[1] 周成杰 LIU Zhiqiang;LI Peihong;ZHOU Chengjie(School of Civil and Surveying Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学土木与测绘工程学院,江西赣州341000

出　　处：《测绘与空间地理信息》2023年第2期72-75,79,共5页Geomatics & Spatial Information Technology

基　　金：江西理工大学清江青年英才支持计划项目(JXUSTQJBJ2018002)资助。

摘　　要：南方红壤丘陵区生态环境脆弱,为合理评估红壤丘陵区生态风险时空变化规律,以赣州市为例,基于2000—2020年4期30 m分辨率土地利用数据,对该区土地利用时空格局变化进行分析,从景观格局角度构建生态风险指数,结合生态风险影响因素对景观生态评价分析。研究期内,林地面积持续减少,建设用地面积增加。2000—2020年土地利用多样化指数由0.40上升至0.43,土地利用类型总体结构向丰富多样化发展。各时期景观生态风险在空间上分布差异显著,集聚效应明显,高风险区面积由32.75 km^(2)下降到12.00 km^(2)。研究区生态压力和生态响应在空间上分布差异明显,该区生态风险受多重因素影响,应对重点区域加强生态治理。The ecological environment in the southern red soil hilly region is fragile.In order to reasonably evaluate the spatio-temporal changes of ecological risk in the red soil hilly region,this paper take Ganzhou city as an example and analyze the spatial-temporal pattern of land use based on the land use data of 30 m resolution in four periods from 2000 to 2020,constructs the ecological risk index from the perspective of landscape pattern and evaluate and analyze the landscape ecology in combination with the ecological risk influencing factors.During the study period,the area of forest land continued to decrease and the area of construction land increased.From 2000 to 2020,the land use diversity index increased from 0.40 to 0.43,and the overall structure of land use types became rich and diversified.The spatial distribution of landscape ecological risks in each period is significantly different,and the agglomeration effect is obvious.The area of high-risk areas decreases from 32.75 km^(2)to 12.00 km^(2).The spatial distribution of ecological pressure and ecological response in the study area is obviously different,and the ecological risk in the area is affected by multiple factors and ecological governance should be strengthened in key areas.

关 键 词：红壤丘陵区 土地利用/覆被变化(LUCC) 景观格局 

分 类 号：F301.2[经济管理—产业经济] X826[环境科学与工程—环境工程]