摘要
在测定黄河三角洲滨海湿地盐生植被、湿生植被和水生植被3类天然湿地植被以及稻田的生物量、净初级生产力基础上,估算了黄河三角洲滨海湿地植被的总碳储量、总固碳能力和各种湿地植被单位面积的碳储量、固碳能力。黄河三角洲滨海湿地全部天然湿地植被和稻田的总碳储量为200.54×104t,总固碳能力为69.91×104t/a。其中,单位面积草本湿生植被和稻田的固碳能力低于当地地带性植被温带落叶阔叶林的平均固碳能力(1.06 kg/(m2.a)),高于中国陆地植被的平均固碳能力(0.49 kg/(m2.a))和全球陆地植被的平均固碳能力(0.41 kg/(m2.a));单位面积盐生植被和水生植被的固碳能力低于中国和全球陆地植被的平均固碳能力。结果表明,黄河三角洲滨海湿地植被总的碳储量较小,固碳能力较低,但植被的顺行演替过程会使其碳储量不断增大,固碳能力不断提高。因此,应该保护黄河三角洲滨海湿地的天然植被,尤其要保护芦苇(Phragmites australis)群丛等碳储量大、固碳能力较强的湿生植被。
The present paper is aimed at introducing our research of the relation between carbon storage and reinforced fixation of the coastal wetland vegetation in the Yellow River Delta Area based on our sampling surveys and some correlated statistical reference data. For our research purpose, we have surveyed the acreage of natural vegetations of the coastal wetlands and paddy fields in the Delta area and classified its natural vegetations into 3 sorts, that is, such as halarch vegetation, hydromorphic vegetation and hydrophilic vegeta- tion. Our research has also measured the biomass and the net primary productivity of the natural vegetations and paddy fields, and worked out the carbon storage and carbon fixation per unit area and the total carbon storage and carbon fixation of the wetland vegetations. The re- sults of our research show that the total carbon storage and carbon fix- ation of the wetland vegetations and paddy fields in the Delta area are equal to 200.54× 104 t and 69.91 × 104 L/a, with its carbon fixation of the hydromorphic vegetations and paddy fields much higher than the mean carbon fixation of the global terrestrial vegetation（0.41 kg/（m2 a）） and the all-China terrestrial vegetations （0.49 kg/（m2＂ a））. However, the carbon fixation of the hydromorphic veg- etations remains lower than that of the corresponding local latitudinal deciduous broad-leaved forest （1.06 kg/（m2＂ a））. As to its carbon fixation of the halarch vegetation and hydrophilic vegetation, the area remains lower than that of the global terrestrial vegetations or all-Chi- na terrestrial vegetations. Our survey shows that the carbon storage and carbon fixation of the vegetations of eoastal wetland in the Yellow River Delta remains low, which is likely to reflect the fragility of the coastal wetland ecosystem of the area. All in all, the ever-increasing tendency of the area in reinforcing its natural vegetation and carbon storage and ever-intensifying fixation of the vegetations, in addition to the necessary countermeasures to protect the natural vegetations, are surely strengthened particularly in the reed association of coastal wet- lands in the area.
出处
《安全与环境学报》
CAS
CSCD
北大核心
2012年第6期145-149,共5页
Journal of Safety and Environment
基金
山东省黄河三角洲生态环境重点实验室开放基金项目(2009KFJJ04)
国家海洋公益性行业科研专项经费项目(201105005)
中国地质调查局项目(GZH201100203)
关键词
植物学
滨海湿地
植被
生物量
净初级生产力
碳储量
固碳能力
botany
coastal wetland
vegetation
biomass
net primary productivity
carbon storage
carbon fixation
作者简介
张绪良（通信作者），副教授，博士，从事自然地理学及生态学研究，geo—zhang@163．com。
