摘要
以GIS为支撑,以成渝经济区的空间关系、自然环境和社会环境为基础,分析2000—2007年森林碳储量的动态和空间格局.结果表明:①2000—2007年森林碳储量从3.39×108 t增至3.59×108 t,年均增长率为0.72%,区域碳汇能力逐渐增强.②各生态功能区森林碳储量变化不同,经济发达地区碳储量增长更为缓慢.③森林碳储量在各高程等级均有所增加,其中海拔在500～<1 000 m的区域增长最快,海拔≥3 000 m的区域增长最慢;坡度为25～<35°的区域增长最快,≥35°的区域增长最慢.④森林碳储量除在人口密度≥1 000人/km2的区域呈缓慢减少的趋势外,在其他区域均呈增加趋势,其中人口密度在250～<500人/km2的区域增长最快.⑤同一年内森林碳储量呈现出随GDP增加而逐渐减少的趋势;年际间,各GDP等级内碳储量均呈增加趋势,其中在GDP为2.5×106～<5.0×106元/km2的区域增长最快.
The dynamic and spatial patterns of forest carbon storage from 2000 to 2007 were analyzed based on GIS and the spatial relationship,natural and social environments in the Chengyu Economic Region（CYER）.The results showed：（1） Forest carbon storage in CYER increased from 3.39 × 108 t in 2000 to 3.59 × 108 t in 2007,with an annual average growth rate of 0.72%;it was gradually playing a role as regional carbon sink.（2） Forest carbon storage had slower growth rate in developed areas than in undeveloped areas among ecological function regions.（3） Forest carbon stocks increased in all elevation grades and slope grades.The fastest growth rate occurred at elevations between 500 to 1000 m and with slope between 25° to 35°,while the slowest growth rate occurred with elevation more than 3 000 and with slope more than 35°.（4） The forest carbon stock also increased in all areas,although it decreased slowly in areas with population density more than 1 000 person /km2.Forest carbon stock had the biggest increase rate in the areas in which population density was between 250 and 500 person /km2.（5） Along with the increasing of GDP,the forest carbon storage decreased in the same year.The forest carbon storages all increased gradually with all GDP grades from 2000 to 2007,among which forest carbon stock had the biggest increase rate in the area with GDP between 2.5 × 106 ～ 5.0 × 106 yuan /km2.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2010年第12期1456-1463,共8页
Research of Environmental Sciences
基金
环境保护部重大科技项目
关键词
森林碳储量
空间格局
时间动态
成渝经济区
forest carbon storage
spatial pattern
temporal dynamics
Chengyu Economic Region（CYER）
