| Effects of historical land cover changes on climate |
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| 作者姓名： | SHI ZhengGuo YAN XiaoDong YIN ChongHua WANG ZhaoMin |
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| 作者单位： | [1]Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Chinese Academy of Sciences, Beijing 100029, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China [3]British Antarctic Survey, Cambridge CB30ET, UK |
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| 基金项目： | Supported by the Project of ＂Aridification over Northern China and Human Adaptation＂ （Grant No. 2006 CB400500）The authors thank RamanKutty N. and Foley J. for providing historical land use dataset （RF99）. |
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| 摘 要： | In order to explore the influence of anthropogenic land use on the climate system during the last mil- lennium, a set of experiments is performed with an Earth system model of intermediate complexity—— the McGill Paleoclimate Model (MPM-2). The present paper mainly focuses on biogeophysical effects of historical land cover changes. A dynamic scenario of deforestation is described based on changes in cropland fraction (RF99). The model simulates a decrease in global mean annual temperature in the range of 0.09-0.16℃, especially 0.14-0.22℃ in Northern Hemisphere during the last 300 years. The responses of climate system to GHGs concentration changes are also calculated for comparisons. Now, afforestation is becoming an important choice for the enhancement of terrestrial carbon sequestration and adjustment of regional climate. The results indicate that biogeophysical effects of land cover changes cannot be neglected in the assessments of climate change.
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| 关 键 词： | 气候变化 陆地覆盖 森林开伐 气候-生物圈相互作用 |
| 收稿时间： | 26 February 2007 |
| 修稿时间： | 2006-02-26 |
Effects of historical land cover changes on climate |
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| SHI ZhengGuo YAN XiaoDong YIN ChongHua WANG ZhaoMin.Effects of historical land cover changes on climate[J].Chinese Science Bulletin,2007,52(18):2575-2583. |
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| Authors: | Shi ZhengGuo Yan XiaoDong Yin ChongHua Wang ZhaoMin |
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| Institution: | (1) Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Chinese Academy of Sciences, Beijing, 100029, China;(2) Graduate University of Chinese Academy of Sciences, Beijing, 100049, China;(3) British Antarctic Survey, Cambridge, CB30ET, UK |
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| Abstract: | In order to explore the influence of anthropogenic land use on the climate system during the last millennium, a set of experiments
is performed with an Earth system model of intermediate complexity—the McGill Paleoclimate Model (MPM-2). The present paper
mainly focuses on biogeophysical effects of historical land cover changes. A dynamic scenario of deforestation is described
based on changes in cropland fraction (RF99). The model simulates a decrease in global mean annual temperature in the range
of 0.09–0.16°C, especially 0.14–0.22°C in Northern Hemisphere during the last 300 years. The responses of climate system to
GHGs concentration changes are also calculated for comparisons. Now, afforestation is becoming an important choice for the
enhancement of terrestrial carbon sequestration and adjustment of regional climate. The results indicate that biogeophysical
effects of land cover changes cannot be neglected in the assessments of climate change.
Supported by the Project of “Aridification over Northern China and Human Adaptation” (Grant No. 2006 CB400500) |
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| Keywords: | climate change radiative forcing land cover changes deforestation climate-biosphere interactions |
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