内蒙古典型草原区植被NPP对气候变化的响应  

Net Primary Production in Response to Climate Changes in Inner Mongolia Steppe

作　　者：闫伟兄[1] 陈素华[1] 乌兰巴特尔 魏玉蓉[1] 杨丽萍[1] 

机构地区：[1]内蒙古自治区生态与农业气象中心,呼和浩特010051

出　　处：《自然资源学报》2009年第9期1625-1634,共10页Journal of Natural Resources

基　　金：国家社会公益研究专项(2004DIB4J170);国家科技支撑计划(2007BAC03A02-3)

摘　　要：研究植被生产力对气候变化的响应是理解陆地生态系统与气候变化相互作用的重要基础,论文利用近45 a内蒙古典型草原区55个气象台站的气象数据,采用Holdridge生命地带的气候指标和NPP区域估算模型,研究了内蒙古典型草原区植被净第一性生产力(NPP)对气候变化的响应。结果表明,1960—2004年间,内蒙古典型草原区域内,发生了以生物温度升高和湿润度降低为代表的生物气候明显变化;典型草原区年NPP和春、夏、秋3个季节的NPP均呈现增加趋势,其中夏季是NPP增加速率最快,增加量最大的季节;在区域上,年NPP呈现由东北至西南的递减态势,不同区域年NPP均有增加趋势,其中以中部区最为明显。Study on response of net primary production （NPP） derstand interaction between terrestrial ecosystems and climate c to climate changes is to help unhanges. In this study, a 45-year time series meteorological dataset of 55 stations in Inner Mongolia steppe, vegetation-climate indices of Holdridge＇ s life zones system, together with NPP district estimate model, were used to explore response of net primary production to climate c suits, with biological temperature and moisture index hanges in Inner Mongolia steppe. As the refor representative biological climate in Inner Mongolia steppe showed a significant change from 1960 to 2004. Annual and seasonal（ spring, summer and autumn） NPP presented an increase tendency; especially, the summer NPP indicated the largest increase rate and magnitude. The response of annual NPP to climate changes varied with different areas decreasing gradually from southwest to northeast. Annual NPP in different areas appeared Key words an increasing trend, of which the most significant increase occurred in central area.

关 键 词：气候变化 植被净第一性生产力(NPP) EOF分解 典型草原 

分 类 号：S812[农业科学—草业科学] P467[农业科学—畜牧学]