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1959-2008长江源被净初级生产力对气候变化的响应
引用本文:姚玉璧,杨金虎,王润元,陆登荣,张秀云.1959-2008长江源被净初级生产力对气候变化的响应[J].冰川冻土,2011,33(6):1286-1293.
作者姓名:姚玉璧  杨金虎  王润元  陆登荣  张秀云
作者单位:中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州730020/甘肃省定西市气象局,甘肃定西743003;甘肃省定西市气象局,甘肃定西,743003;中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州,730020;甘肃省气象信息中心,甘肃兰州,730020
基金项目:国家重大科学研究计划(2012CB955304);国家公益性行业(气象)科研专项(GYHY201106029;GYHY200806021);国家自然科学基金重点项目(40830957);甘肃省气象局第五批"十人计划"项目;中国气象局气候变化专项(280200S011C00);干旱气象科学研究基金项目(IAM201111)资助
摘    要:基于长江源区1959-2008年月平均气温、最高气温、最低气温、相对湿度、降水量、风速和日照时数等气候要素资料,应用修订的Thornthwaite Memorial模型计算了50a被净初级生产力,分析其年际和年代际变化特征及其对气候变化的响应.结果表明:1959-2008年间,研究区年NPP变化呈显著上升趋势,NPP变...

关 键 词:净初级生产力  气候变化  响应  长江源区

Responses of Net Primary Productivity of Natural Vegetation to Climatic Change over Source Regions of Yangtze River in 1959-2008
YAO Yu-bi,YANG Jin-hu,WANG Run-yuan,LU Deng-rong,ZHANG Xiu-yun.Responses of Net Primary Productivity of Natural Vegetation to Climatic Change over Source Regions of Yangtze River in 1959-2008[J].Journal of Glaciology and Geocryology,2011,33(6):1286-1293.
Authors:YAO Yu-bi  YANG Jin-hu  WANG Run-yuan  LU Deng-rong  ZHANG Xiu-yun
Institution:1.China Meteorological Administration Key Laboratory of Arid Climate Change and Reducing Disaster,Gansu Province Key Laboratory of Arid Climate Change and Reducing Disaster,Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Lanzhou Gansu 730020,China;2.Meteorological Bureau of Dingxi City,Dingxi Gansu 743000, China;3.Gansu Meteorological Information Center,Lanzhou Gansu 730020,China)
Abstract:Based on the data of monthly mean air temperature,maximum and minimum air temperature,relative humidity,precipitation,wind speed and sunshine duration over the source regions of the Yangtze River during 1959-2008,the net primary productivity(NPP) was computed with revised Thornthwaite Memorial Model.The annual variation and the seasonal difference of NPP were analyzed.Also the response of net primary productivity to climate change was discussed.It is found that during 1959-2008,the annual NPP had a increased trend,with a linear fitting rate of 97.901~197.01 kg·(hm)-2·(10a)-1,a higher NPP appeared after the 1990s.Cold and dry climate occurred in the 1960s and 1980s,when the NPP was 0.2%~3.1% less than the average annual NPP.Warm and wet climate appeared in 2001-2008,when the NPP was 10.4%~11.7% more than the average annual NPP.The mainly factors which influence the NPP are precipitation,the maximum evapotranspiration and the average minimum temperature.The warm and wet climate would benefit the NPP with an average increment of 7.6%~10.3% over the source regions of the Yangtze River,while the cold and dry climate would have an adverse impact on the NPP with an average reduction of yield.The future climate over the source regions of the Yangtze River will become warm and moist,and it is inferred that the NPP will increase by 8%~25% in 2050.
Keywords:net primary productivity  climate change  Responses  source regions of the Yangtze River
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