| 青藏高原植被净初级生产力及其对气候变化的响应 |
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| 引用本文： | 德吉央宗,鲁旭阳. 青藏高原植被净初级生产力及其对气候变化的响应[J]. 绿色科技, 2013, 0(10): 4-6 |
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| 作者姓名： | 德吉央宗 鲁旭阳 |
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| 作者单位： | 1. 西藏自治区环境监测中心站生态监测与研究中心,西藏拉萨,850000
2. 中国科学院成都山地灾害与环境研究所西藏生态环境与发展研究室,四川成都,610041 |
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| 基金项目： | 国家自然科学基金项目(编号41001177)；中国科学院西部行动计划项目 |
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| 摘 要： | 论述了青藏高原植被净初级生产力(NPP)的空间分布和时间变化动态,以及NPP与气候因子的关系和对未来气候变化的响应。总结出了以下结论:①青藏高原年均NPP为0.3Pg Ca-1,由东南向西北逐渐递减,与该地区的水热条件和植被类型的地带性分异规律一致;②近年来,青藏高原的植被生产力在波动中呈上升趋势,年增加速率约为0.7%;③温度是影响青藏高原生物生长的主导因子,青藏高原净初级生产力随着气温和降水的增加而增加;④未来气候变化影响青藏高原植被NPP,在IPCC预测的B1、A1B和A2气候变化情景下,青藏高原的NPP均呈增加的趋势。
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| 关 键 词： | 青藏高原 净初级生产力 气候变化 |
Analysis of Vegetation Net Primary Productivity on Qinghai -Tibetan Plateau and Its Response to Climate Change |
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| Deji Yangzong , Lu Xuyang. Analysis of Vegetation Net Primary Productivity on Qinghai -Tibetan Plateau and Its Response to Climate Change[J]. LVSE DASHIJIU, 2013, 0(10): 4-6 |
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| Authors: | Deji Yangzong Lu Xuyang |
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| Affiliation: | 2 Ecological Monitoring and Research Center, Tibetan Environment Monitoring Station, Lhasa 850000, China; 2. Reaserch Department of Tibetan Ecology ＆- Development, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China) |
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| Abstract: | This study reviews the spatial distribution and temporal dynamics of vegetation net primary productivity （NPP） on the Qinghai--Tibetan Plateau, and also discusses the relationships between NPP and climatic factors and the responses of NPP to future climate change. The results show that： @The mean annual NPP of the Qinghai-- Tibetan Plateau vegetation is 0.3 Pg Ca-1 , with NPP clearly decreasing from southeast to northwest, consistent with the changes in the vegetation zone and precipitation and temperature patterns; @The annum NPP of the plateau shows obvious increasing trends. In general, the NPP has increased at an annual rate of 0.7~ ;@Temperature is the dominant factor affecting NPP. Furthermore, NPP increases with increasing temperature and precipitation in this region;@I{ future climate change continues, the vegetation NPP of the Qinghai--Tibetan Plateau will change accordingly. In addition, the NPP shows an increasing trend under IPCC B1, AIB and A2 climate change scenarios. |
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| Keywords: | Qinghai-Tibetan Plateau net primary productivity (NPP) climate change |
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