摘要
广东省国家级公益林在国土生态安全、生物多样性保护和生态屏障方面发挥了重要作用。通过地理空间分析,全省国家级公益林中,岩溶地区分布面积占21.85%,是生态保护和恢复的重点;岩溶地区国家级公益林地发生中度侵蚀、强度侵蚀程度的比例为11.63%,基岩裸露度在50%以上的比例为53.19%,植被以灌木林为主,占60.69%,表明生态环境较为脆弱;2011—2016年,岩溶地区国家级公益林地中石漠化土地面积减少1 994 hm^(2),中度、重度石漠化面积分别减少2 116 hm^(2)和483 hm^(2),表明通过封山育林、人工造林和生态恢复等修复措施,岩溶地区生态状况呈良性发展态势,对生态脆弱地区的生态恢复起到了决定性作用。
The national public welfare forests in Guangdong Province has played an important role in such aspects as territorial ecological security, biodiversity protection and ecological barriers. By geospatial analysis, among the national public welfare forests in Guangdong Province, the distribution area in karst area is 21.85%, which is the emphasis of ecological protection and recovery. The percentage of occurring moderate erosion and intensity erosion in the national public welfare forests in karst area is 11.63%;the percentage of the exposure of bedrock above 50% is 53.19%;its vegetation with shrubbery as the main one, accounts for 60.69%,showing that the ecological environment is vulnerable. From 2011 to 2016,theland area of rocky desertification of the national public welfare forests within karst area decreases 1 994 hm2,the area of moderate erosion and intensity erosion deceases 2 116 hm2 and 483 hm2 respectively, showing that through restoration measures such as mountain closure for forest cultivation, artificial afforestation and ecological restoration within national public welfare forests, the ecological status in karst area appears good development situation, and plays an decisive role to the ecological restoration of ecologically vulnerable area.
作者
刘金山
张蓓
黎明
陈日强
陈志标
LIU Jinshan;ZHANG Bei;LI Ming;CHEN Riqiang;CHEN Zhibiao(Central South Inventory and Planning Institute of National Forestry and Grassland Administration,Changsha 410014,Hunan,China;Guangdong Forestry Government Affairs Service Center,Guangzhou 510173,Guangdong,China;Fengkai County Forestry Bureau,Fengkai 526500,Guangdong,China)
出处
《中南林业调查规划》
2020年第4期12-16,共5页
Central South Forest Inventory and Planning
关键词
国家级公益林
生态脆弱
岩溶
石漠化
national public welfare forests
ecological vulnerability
karst
rocky desertification
