Carbon cycling of alpine tundra ecosystems on Changbai Mountain and its comparison with arctic tundra   总被引：4，自引：0，他引：4  

代力民  吴钢  赵景柱  孔红梅  邵国凡  邓红兵 《中国科学D辑(英文版)》2002,45(10):903-910

The alpine tundra on Changbai Mountain was formed as a left-over ‘island’ in higher elevations after the glacier retrieved from the mid-latitude of Northern Hemisphere to the Arctic during the fourth ice age. The alpine tundra on Changbai Mountain also represents the best-reserved tundra ecosystems and the highest biodiversity in northeast Eurasia. This paper examines the quantity of carbon assimilation, litters, respiration rate of soil, and storage of organic carbon within the alpine tundra ecosystems on Changbai Mountain. The annual net storage of organic carbon was 2092 t/a, the total storage of organic carbon was 33457 t, the annual net storage of organic carbon in soil was 1054 t/a, the total organic carbon storage was 316203 t, and the annual respiration rate of soil was 92.9% and was 0.52 times more than that of the Arctic. The tundra-soil ecosystems in alpine Changbai Mountain had 456081 t of carbon storage, of which, organic carbon accounted for 76.7% whereas the mineral carbon accounted for 23.3%.  相似文献   

长白山高山冻原生态系统碳循环及与北极对比研究   总被引：10，自引：0，他引：10  

吴钢  赵景柱  邵国凡  邓红兵  李静 《中国科学D辑》2001,31(12):1039-1045

探讨了长白山高山冻原生态系统的碳同化固定量、凋落物迁移量、冻原土壤生态系统的呼吸释放速率、有机碳库贮存量,并与北极进行了对比研究.结果证明:（1）长白山高山冻原植被生态系统目前年净储存有机碳2092t/a,总储存有机碳33457t;土壤库目前年均净储存有机碳1054t/a,总储存有机碳316203t,年均土壤呼吸速率为92.72/m2·a-1,是北极的 1.52倍;（2）白山高山冻原植被-土壤生态系统现已成为456081t的碳的储存库,其中,有机碳占76.7％,无机碳占23.3％.它是调节长白山小气候、维持长白山高山冻原植被类型、保护长白山冻原土壤、防治水土流失的巨大的屏障,同时对固定大气CO2起着巨大的汇作用.  相似文献