短花针茅草原植物群落生产力与气候波动的关系

The Relationship Between Primary Productivity of Plant Community and Climate Fluctuation in Stipa breviflora Desert Steppe

本文通过分析短花针茅草原植物群落地上净生产量、生长季节地上平均生产量与多年气候变化的相互关系 ,指出短花针茅草原近年气温有逐步升高的趋势 ,降水量的波动成随机性。初级生产力与 4～ 8月的累积降水量有显著的直线回归关系 ,而与年平均气温、≥

The relationship between aboveground net annual primary production,aboveground average growth season production and long term climate change was analyzed in Stipa breviflora desert steppe in Inner Mongolia.The result showed that the annual air temperature rose in the recent years,and the precipitation fluctuation was stochastic.There was a significantly linear correlation between abovegronud primary production and the accumulated rainfall from April to August,and there was no correlation between production and annual air temperature,5℃accumulated air temperature in the Stipa breviflora desert steppe.