净第一性生产力模型在内蒙古典型草原区的应用分析  

The Application and Analysis of Net Primary Productivity Model in the Typical Steppe of Inner Mongolia

作　　者：云文丽 王永利[2] 侯琼 李飞 王冰晨[4] 

机构地区：[1]内蒙古气象科学研究所,内蒙古呼和浩特010051 [2]中国科学院东北地理与农业生态研究所,吉林长春130012 [3]内蒙古气象局监测网络处,内蒙古呼和浩特010051 [4]内蒙古气象信息中心,内蒙古呼和浩特010051

出　　处：《中国草地学报》2008年第2期1-4,共4页Chinese Journal of Grassland

基　　金：国家自然科学基金(30760102);国家社会公益研究专项(2004DIB4J170)

摘　　要：基于内蒙古典型草原地区锡林浩特、镶黄旗、察右后旗气象站1993-2003年的温度、降水及牧草生物量监测资料，利用净第一性生产力模型预测1993-2003年典型草原区的净第一性生产力，且通过实测地上生物量对模型预测结果进行验证，分析比较了模型在同一个植被类型区域不同点的预测结果。结果表明：（1）以点代面去预测一个区域的牧草产量会导致估算结果较粗，误差较大；（2）当地的气候生产力取决于温度和降水的组合情况，影响牧草生长的主要气候限制因子是降水，温度的变化对NPP值的影响不是很大。Based on monitoring data of air temperature and precipitation and aboveground biomass of typical steppe in Xilinhot, Xianghuangqi, Chayouhouqi from 1993 to 2003, net primary productivity model was used to forecast net primary productivity of typical steppe that was verified though aboveground biomass measured during 1993-2003, the forecast results of the model were analyzed and compared. The result showed： （1）It is not relatively acute to predict the output of herb only with the data from one region. （2） The climate productivity depends on the rational allocation of water and temperature precipitation is the main limiting factor to affect forage growth, the variation of temperature has not great effect on NPP.

关 键 词：净第一性生产力模型 内蒙古典型草原 应用分析 

分 类 号：S812.1[农业科学—草业科学]