摘要
使用日本对地观测卫星(advanced land observing satellite,ALOS)2008—2011年的影像数据,解译云南现状植被分布.使用分类回归树模型(classification and regression trees,CART)预测云南主要森林植被的潜在分布区,估算云南森林植被的碳储量和固碳潜力.结果显示:云南省林地总面积是2.0×107hm2,森林覆盖率为52.49%,主要森林植被碳储量为871.14 Tg;不同森林植被碳储量及固碳潜力不同,碳储量较高的是季风常绿阔叶林、暖温性针叶林和暖热性针叶林,分别为205.42、172.72 Tg和137.78 Tg,而固碳潜力较大的是暖热性针叶林、暖温性针叶林和温凉性针叶林,分别为788.53、119.00 Tg和156.78 Tg,分别是现实碳储量的5.7倍、2.1倍和0.91倍;云南主要森林植被总固碳潜力为1 321.52 Tg,约为现实碳储量的1.52倍.总体上,云南省针叶林的固碳潜力远大于阔叶林,适当的人为干扰可提高暖热性针叶林的固碳潜力,暖热性针叶林具有较强的清洁发展机制(clean development mechanism,CDM)潜力,云南省主要森林植被在整体上是一个碳汇.
In present study, the current distribution of vegetation in Yunnan Province was compiled based on the data from remote： sensing imageries of ALOS from 2008 to 2011. The classification and regression trees （CART） model was used to predict the potential distribution of main forest types and to estimate the carbon stor- age and carbon sequestration potential of forest types in Yunnan.The results showed that total area of the forest in Yunnan was 20.11 miUion hectares and the forest coverage was 52.49%.The total carbon storage of current forest types was 871.14 TgC similar to the result （812.30 TgC） which was calculated by forest resources inventory.The carbon storage and sequestration changed by different types of forest vegetation. The higher carbon storage was found in the monsoon evergreen broad-leaved forest （205.42 TgC） followed by the warm-temperate coniferous forest （172.72 TgC） and the warm-hot coniferous forest （137.78 TgC）.Whereas ,the warm-hot coniferous forest had the largest carbon sequestration potential （788.53 TgC） followed by the warm-temperate coniferous forest （156.78 TgC） and the temperate-cool coniferous forest （119.00 TgC ） ,which corresponded to 570% ,90.77%, and 210.99% of their actual carbon storage, respectively.The total carbon sequestration potential of main forest vegetation in Yunnan was 1 321.52 TgC ,corresponding to 152% of the actual carbon storage.In general, conifer- ous forest carbon sequestration potential was far more than that of broad-leaved forest in Yunnan.The carbon se- questration potential of warm-hot coniferous forests will increase under appropriate human disturbances in Yun- nan.Warm-hot coniferous forests have high potential of clean development mechanism （CDM） in Yunnan. On the whole,the forest in Yunnan was a carbon sink.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第6期1089-1103,共15页
Journal of Yunnan University(Natural Sciences Edition)
基金
国家自然科学基金(U1202234)
国家自然科学基金重大项目(31290221)
中国科学院战略性先导科技专项(XDA05050601
XDA05050206)
中国科学院"一三五"专项(方向一:XTBG-F01)
关键词
森林植被
分类回归树模型
潜在分布区
碳储量
碳汇潜力
forest vegetation
classification and regression trees
potential distribution area
carbon storage
carbon sequestration potential
