摘要
采用遥感判读和地面调查相结合的办法,对青海省海晏县泥炭沼泽碳库进行调查。结果表明,海晏县泥炭沼泽面积259.88 hm^(2),全部是富营养型的低位泥炭沼泽。泥炭沼泽水源补给以地表径流、大气降水为主,为季节性水体流出、季节性积水。全县受保护泥炭沼泽面积57.83 hm^(2),占22.25%;泥炭沼泽受威胁的主要因素是过度放牧,威胁程度为轻度,保护管理形势严峻。海晏县泥炭沼泽的植被类型全部是草本沼泽,以莎草型的藏嵩草群系为主,植物生物量56502.70 t。泥炭沼泽有机碳总含量199980.31 t,其中植物有机碳含量24803.77 t,占12.40%;土壤有机碳含量175176.53 t,占87.60%。潜育泥炭(0.0<C_(org)%<12.0)分布面积5439.09 hm^(2),碳汇潜力巨大。提出泥炭沼泽保护管理的相关建议。
The carbon pool of peatland in Haiyan County of Qinghai Province was investigated by means of remote sensing interpretation and ground investigation.The results showed that the distribution area of peatlands in Haiyan was 259.88 hm^(2),and all the peatlands were eutrophic low-level peat bogs.Surface runoff and meteoric precipitation were the main sources of water supply which was seasonal water outflow and seasonal ponding.The area of protected peatland in Haiyan was 57.83 hm^(2),accounting for 22.25%;the main threat factor of peatland was overgrazing,the threat degree was slight,and the protection and management situation was severe.The vegetation types of peatland in Haiyan were all herbaceous bogs,mainly composed of sedge type Kobresia,with a plant biomass of 56502.70 t.The total organic carbon content of the peatland was 199980.31 t,of which the plant organic carbon content was 24803.77 t,accounting for 12.40%andthe soil organic carbon content was 175176.53 t,accounting for 87.60%.The azonal peat(0.0<C_(org)%<12.0)in Haiyan had a distribution area of 5439.09 hm^(2) with great potential for carbon sink.Finally,this paper put forwardsome suggestions on protection and management of peatland in Haiyan County.
作者
张富强
ZHANG Fuqiang(Qinghai Institute of Forest and Grassland Planning,Xi′ning 810007,China)
出处
《林业调查规划》
2021年第5期149-151,184,共4页
Forest Inventory and Planning
基金
青海财政专项基金(QHCZZX20180118).
关键词
泥炭沼泽
生物量
土壤有机碳
碳库
海晏县
peatland
biomass
soil organic carbon
carbon pool
Haiyan County
作者简介
第一作者:张富强(1971-),男,四川南充人,高级工程师.主要从事林草调查与生态保护工作.
