CHAO Lin
Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Institute of Geography and Oceanography, Nanning Normal University, Nanning 530001, China;Huitong National Research Station of Forest Ecosystem, Huitong 418307, Hunan, ChinaLI Zhongguo
Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Guangxi Youyiguan Forest Ecosystem Research Station, Pingxiang 532600, Guangxi, ChinaYANG Daxing
Yuanjiang Research Station for Savanna Ecosystems, Xishuangbana Tropical Botanical Garden, Chinese Academy of Sciences, Yuanjiang 653300, Yunnan, ChinaWANG Aihua
Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Institute of Geography and Oceanography, Nanning Normal University, Nanning 530001, China;Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, ChinaZHANG Jianbing
Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Institute of Geography and Oceanography, Nanning Normal University, Nanning 530001, ChinaHU Baoqing
Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Institute of Geography and Oceanography, Nanning Normal University, Nanning 530001, ChinaLIU Yanyan
Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Institute of Geography and Oceanography, Nanning Normal University, Nanning 530001, ChinaTo understand the difference in chemical properties between drought-dead and natural litter leaves, the chemistry traits in leaves of five species in Yuanjiang Savanna Ecosystem Research Station, such as Bauhinia brachycarpa, Tarenna depauperate, Cipadessa baccifera, Polyalthia cerasoides and Rubus pungens, were studied. The results showed that the chemical characteristics of carbon and nutrients had great variation between drought-dead and natural litter leaves, and there were very significant differences among these tree species (P<0.001). Compared with natural litter leaves, drought-dead leaves had high dissolved organic carbon, C/N and magnesium, but the concentration of lignin, hemicellulose and nitrogen was low. Furthermore, the chemical traits of drought-dead leaves had positive correlation with nature litter leaves, such as the concentration of carbon (R2=0.56,P<0.01), cellulose (R2=0.52, P<0.01), hemicellulose (R2=0.85, P<0.001), tannin (R2=0.99,P<0.001), lignin/N (R2=0.60,P<0.01), C/N (R2=0.64,P<0.001) and nitrogen (R2=0.85, P<0.001). Therefore, according to the chemical properties of natural litters, the chemical properties of drought-dead leaves under extreme drought conditions could be predicted in the future.
巢林,李忠国,杨大新,王爱华,张建兵,胡宝清,刘艳艳.干旱死亡叶片与自然凋落叶化学性质对比研究[J].热带亚热带植物学报,2022,30(1):79~87
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