摘要
作为生态系统服务的重要评价指标之一,碳储量及其变化的研究是近年来全球陆地生态系统碳循环和应对气候变化的重要课题。在人类活动干扰和气候变化加剧的背景下,粤港澳大湾区作为中国重要经济核心区之一正在发生快速的变化,面临巨大的生态环境压力。通过利用InVEST模型,对粤港澳大湾区2005、2010、2015、2018年碳储量进行定量评估,分析其时空演变及空间差异性。结果表明:1)大湾区在2005、2010、2015、2018年的碳储量分别为202.41×10~6、200.87×10~6、199.99×10~6、200.10×10~6 t,变化呈现先减少后增加的趋势;2)大量的林地、耕地面积被建设用地所侵占,大湾区碳储量降低了1.14%,年损失率为0.09%;3)2015—2018年大湾区固碳量转负为正,说明近年来政府推行的生态保护政策初见成效。在低碳湾区发展目标下保护耕地和林地,大力推进增绿碳汇工程将会大大提高湾区的碳储存与固碳能力。
As an important evaluation index of ecosystem services,carbon storage and its change researches are an important topic of global terrestrial ecosystem carbon cycle and tackling climate change in recent years.Due to increased human activity interference and climate change,the Guangdong-Hong Kong-Macao Greater Bay Area(GBA),one of the most important economic core areas in China,is undergoing rapid changes and facing huge ecological environment pressure.With the InVEST model,this research quantitatively evaluates the carbon storage of GBA in 2005,2010,2015 and 2018 respectively,and analyzes the spatio-temporal evolution and spatial differences.The results show that:1)In 2005,2010,2015 and 2018,the carbon storage of GBA was 202.41×10~6 t,200.87×10~6 t,199.99×10~6 t and 200.10×10~6 t respectively,and the change of total carbon storage showed a trend of decreasing first and then increasing;2)A large amount of forest land and cultivated land was occupied for construction purpose,the total carbon storage of GBA decreased by 1.14%,and the annual loss rate stood at 0.09%;3)From 2015 to 2018,the carbon sequestration in GBA turned from negative to positive,indicating that the government’s ecological protection policies have achieved initial results in recent years.Under the development goal of the low-carbon bay area,the carbon storage and carbon sequestration capacity of GBA would be greatly improved by protecting cultivated areas and forest land and vigorously promoting the project of green enhancement and carbon sink project.
作者
吴隽宇
张一蕾
江伟康
WU Juanyu;ZHANG Yilei;JIANG Weikang(the School of Architecture,South China University of Technology;the Department of Landscape Architecture,School of Architecture,South China University of Technology)
出处
《风景园林》
2020年第10期57-63,共7页
Landscape Architecture
基金
国家自然科学基金(编号51978274)。
关键词
风景园林
生态系统服务
粤港澳大湾区
碳储量
InVEST模型
时空演变
landscape architecture
ecosystem services
Guangdong-Hong Kong-Macao Greater Bay Area
carbon storage
InVEST model
spatio-temporal evolution
