湖北大学学报(自然科学版)
湖北大學學報(自然科學版)
호북대학학보(자연과학판)
2013年
3期
393-396
,共4页
洪湖%菰%储碳%固碳
洪湖%菰%儲碳%固碳
홍호%고%저탄%고탄
Honghu Lake wetland%Ziz ania lati f olia%carbon storage%carbon fixation
通过实地调研与实验室测定相结合的方法,研究洪湖湿地野菰(Ziz ania latif olia)的现存生物量和初级生产力,测算其碳储量、固碳能力,探讨其固碳潜力.结果得出:洪湖湿地野菰地上现存生物量平均0.75 kg?m -2(0.52~0.96 kg?m -2),现存碳储量平均0.33 kg?m-2(0.23~0.42 kg?m-2);地下部分的生物现存量平均为1.47 kg?m -2,其碳储量平均为0.65 kg?m -2,均约为地上2倍,因此野菰碳储量主要在地下部分;洪湖湿地野菰地上部分净初级生产力平均合计达0.75 kg?m -2?a-1,加上地下部分,平均为1.2 kg?m -2?a-1,固碳能力为0.53 kg?m-2?a-1,高于全国陆地植被平均固碳能力和全球植被平均固碳能力.与中国不同生态系统的固碳能力相比,由于洪湖湿地野菰种群郁闭度较高,其平均固碳能力强于城市、河流等生态系统,明显高于其他湖泊生态系统.
通過實地調研與實驗室測定相結閤的方法,研究洪湖濕地野菰(Ziz ania latif olia)的現存生物量和初級生產力,測算其碳儲量、固碳能力,探討其固碳潛力.結果得齣:洪湖濕地野菰地上現存生物量平均0.75 kg?m -2(0.52~0.96 kg?m -2),現存碳儲量平均0.33 kg?m-2(0.23~0.42 kg?m-2);地下部分的生物現存量平均為1.47 kg?m -2,其碳儲量平均為0.65 kg?m -2,均約為地上2倍,因此野菰碳儲量主要在地下部分;洪湖濕地野菰地上部分淨初級生產力平均閤計達0.75 kg?m -2?a-1,加上地下部分,平均為1.2 kg?m -2?a-1,固碳能力為0.53 kg?m-2?a-1,高于全國陸地植被平均固碳能力和全毬植被平均固碳能力.與中國不同生態繫統的固碳能力相比,由于洪湖濕地野菰種群鬱閉度較高,其平均固碳能力彊于城市、河流等生態繫統,明顯高于其他湖泊生態繫統.
통과실지조연여실험실측정상결합적방법,연구홍호습지야고(Ziz ania latif olia)적현존생물량화초급생산력,측산기탄저량、고탄능력,탐토기고탄잠력.결과득출:홍호습지야고지상현존생물량평균0.75 kg?m -2(0.52~0.96 kg?m -2),현존탄저량평균0.33 kg?m-2(0.23~0.42 kg?m-2);지하부분적생물현존량평균위1.47 kg?m -2,기탄저량평균위0.65 kg?m -2,균약위지상2배,인차야고탄저량주요재지하부분;홍호습지야고지상부분정초급생산력평균합계체0.75 kg?m -2?a-1,가상지하부분,평균위1.2 kg?m -2?a-1,고탄능력위0.53 kg?m-2?a-1,고우전국륙지식피평균고탄능력화전구식피평균고탄능력.여중국불동생태계통적고탄능력상비,유우홍호습지야고충군욱폐도교고,기평균고탄능력강우성시、하류등생태계통,명현고우기타호박생태계통.
Wetland ecosystems have strong ability for carbon storage and fixation , and play important roles in the global carbon cycle .By the combined method of on-the-spot investigation and laboratory measurements ,the biomass of Z . lati f olia and net primary productivity was conducted , carbon storage and fixation by Z .lati f olia in Honghu Lake wetland were estimated .Results showed that the shoot biomass of Z .lati f olia was at an average of 0 .75 kg?m -2 (0 .52-0 .96 kg?m -2 ) and carbon storage was at an average of 0 .33 kg?m-2 (0 .23-0 .42 kg?m-2 ) .While the root biomass and carbon storage were respectively at an average of 1 .47 kg?m -2 and 0 .65 kg?m -2 ,with which about two times than those of shoots .The total NPP (net primary productivity ) of Z . lati f olia was at an average of 1 .2 kg?m -2?a-1 ,including 0 .75 kg?m -2?a-1 of its shoots .The carbon fixation was at an average of 0 .53 kg?m -2?a-1 ,which was higher than that of terrestrial vegetations in China and also in the world . Comparing to different ecosystems in China , the average carbon fixation ability of Z . lati f olia in Honghu Lake wetland was higher than that of city ecosystem and rivers ,and also higher than that of other lake wetlands .