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Root biomass and underground C and N storage of the primitive Korean pine and broad-leaved forest and its different succession stages in Changbai Mountain, northeast China |
| YANG Liyun1, LUO Tianxiang2, WU Songtao3 |
| 1.Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; School of Metallurgical and Ecological Engineering, Beijing University of Science and Technology, Beijing 100083, China; 2.Institute of Tibet Altiplano Research, Chinese Academy of Sciences, Beijing 100085, China; 3.School of Metallurgical and Ecological Engineering, Beijing University of Science and Technology, Beijing 100083, China; |
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Abstract This paper studied root biomass and underground carbon (C) and nitrogen (N) storage of a more than 200-year-old primitive Korean pine and broad-leaved forest and its two 20- and 80-year-old secondary Populus davidiana and Betula platyphylla forests in Changbai Mountain, northeast China. The results showed that with forest succession, the root biomass of 20-year-old, 80-year-old, and primitive forests was 2.437, 2.742, and 4.114 kg/m2, respectively. The root C storage was 1.113, 1.323, and 2.023 kg/m2, soil C storage was 11.911, 11.943, and 12.587 kg/m2, and underground C storage was 13.024, 13.266, and 14.610 kg/m2, respectively, while the root N storage was 0.035, 0.032, and 0.038 kg/m2, soil N storage was 1.208, 1.222, and 0.915 kg/m2, and underground N storage was 1.243, 1.254, and 0.955 kg/m2, respectively, which indicated that along with forest succession, the forest underground became a potential carbon sink, whereas underground N storage did not change obviously.
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Issue Date: 05 December 2006
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