气候变化对通辽市北部草原产草量的影响分析

巴雅尔吐胡硕牧业观测站对通辽市北部典型草原区具有较好的代表性。分析该站1960--2007年的气温、降水量、日照时数和21年的牧草干草产量可以较好地了解该地区的气候变化、牧草单产变化以及牧草单产与气象条件的关系。结果表明，48年来通辽市北部草原气温显著上升，日照时数明显增加，降水量有所减少，目前是气温最高、日照最多、降水最少时期。牧草单产处于不断减少过程中，而且与光、温、水关系密切，三者匹配得好，牧草产量就高，否则产量就低。

Analyzing the Influence of Weather Variety on the Grass Yield of Tongliao City Northern Steppe

Bayaertuhusuo herd observation station have better representative to the northern typical steppe area in Tongliao City.Analyzing the air temperature,precipitation,sunshine hours with 48 years(1960-2007) and grass hay yield with 21 years of this sta-tion,we can better understand the weather variety,forage yield variety and the relationship between them.The conclusion show that temperature was increased,sunshine hours were obviously increased,precipitation was decreasing from 1960 to 2007.Now is the pe-riod t...