Temporal Changes of Ecosystem Carbon Stocks in Rubber Plantations in Xishuangbanna, Southwest China

SUN Yanci; MA Youxin; CAO Kunfang; LI Hongmei; SHEN Jinxiang; LIU Wenjun; DI Liang; MEI Cencen

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Temporal Changes of Ecosystem Carbon Stocks in Rubber Plantations in Xishuangbanna, Southwest China

机译：西双版纳橡胶园生态系统碳储量的时空变化

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Rubber (Hevea brasiliensis) plantations have been expanded rapidly in tropical regions of Southwest China and cover more than 20％ of land area in Xishuangbanna.Several studies have addressed changes of soil C stocks in rubber plantations;however,estimates of total ecosystem C stocks and their temporal changes in rubber plantations have been inadequately studied.This study calculated C stocks in soil,biomass,litter,and dry rubber (latex),and estimated the total ecosystem C stocks of rubber plantations in an age sequence of 3-,7-,9-,21-,27-,and 34-year-old in Xishuangbanna,Southwest China.The total C stocks in rubber plantations ranged from 150.3 to 283.7 Mg C ha-1,with a mean of 213.4 Mg C ha-1.The plantations ≤ 9-year-old had significantly lower (P ＜ 0.05) total C stocks than those older than 9 years.Carbon stocks in soil (mass equivalent) were between 107.1-170.5 Mg C ha-1 and in living biomass were between 2.8-95.7 Mg C ha-1,representing the largest and the second largest C components in a rubber plantation ecosystem.Neglect of dry rubber C stock resulted in an underestimate of 7.8％ 14.2％ of the total C stock in the rubber plantations older than 9 years,which was much larger than the contribution of litter C stock (less than 2％).

机译：橡胶树人工林在西南热带地区发展迅速，占西双版纳州土地面积的20％以上。多项研究探讨了橡胶林土壤碳库的变化;但是，估算了生态系统碳库总量和尚未对橡胶园的时间变化进行足够的研究。这项研究计算了土壤，生物量，凋落物和干橡胶（乳胶）中的碳库，并估算了3,7- ，西南，西双版纳州分别有9、21、27和34岁。橡胶园中的C储量总量在150.3至283.7 Mg C ha-1之间，平均为213.4 Mg C ha-1 ≤9岁的人工林的总碳储量明显低于9岁以上的人工林（P ＜0.05）。土壤中的碳储量（质量当量）在107.1-170.5 Mg C ha-1之间，而生物量为在2.8-95.7 Mg C ha-1之间，代表最大和第二大C组分在橡胶园生态系统中，忽略橡胶C的干存量导致9年以上橡胶园C的总存量低估7.8％14.2％，远大于垃圾C的贡献（小于2％）。

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《土壤圈（英文版）》 |2017年第4期|737-746|共10页
作者
SUN Yanci; MA Youxin; CAO Kunfang; LI Hongmei; SHEN Jinxiang; LIU Wenjun; DI Liang; MEI Cencen;
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Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303 China;

Yunnan College of Business Management, Kunming 650106 China;

University of Chinese Academy of Sciences, Beijing 100094 China;

Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303 China;

State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, and College of Forestry, Guangxi University, Nanning 530004 China;

Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303 China;

Yunnan Land and Resources Vocational College, Kunming 650217 China;

Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303 China;

Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303 China;

Yunnan College of Business Management, Kunming 650106 China;

Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303 China;

Yunnan College of Business Management, Kunming 650106 China;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
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Temporal Changes of Ecosystem Carbon Stocks in Rubber Plantations in Xishuangbanna, Southwest China

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