2004—2019年内蒙古扎赉特旗牧草长势与气象条件相关分析  

Correlation Analysis of Herbage Growth and Meteorological Conditions in Jalaid Banner of Inner Mongolia in Recent in 2004—2019 Years

作　　者：刘洋 尤莉[2] Liu Yang;You Li(Xinggan League Meteorological Bureau,Inner Mongolia Ulanhot 137400;Inner Mongolia Climate Center,Inner Mongolia Hohhot 010051)

机构地区：[1]兴安盟气象局,内蒙古乌兰浩特137400 [2]内蒙古气候中心,内蒙古呼和浩特010051

出　　处：《内蒙古气象》2020年第1期37-39,共3页Meteorology Journal of Inner Mongolia

摘　　要：利用内蒙古兴安盟扎赉特旗气象站2004—2019年5—8月的气温、降水、日照时数、相对湿度资料和天然牧草生长发育期观测资料,分析了2004—2019年近16 a牧草高度与气象要素的变化特征,牧草高度与气候条件的相关关系。结果表明:(1)近16 a生长季平均牧草高度为41 cm,5—8月高度在14.2~55.9 cm之间;(2)生长季平均牧草高度与光、温、水条件均没有显著的变化趋势,但8月牧草高度增加趋势明显,16 a增加了16.5 cm;(3)生长季平均牧草高度与同期降水量呈显著正相关、与平均相对湿度呈显著正相关、与日照时数和气温日较差呈显著负相关关系。该地牧草高度受降水量影响较大,降水量越多,日照时数越少,空气相对湿度越大,气温日较差越小,牧草长势越好,而热量条件变化的大小对牧草长势的影响不大。以4个要素作为因子建立的牧草高度回归模型,历史拟合效果好,可以根据当年生长季气候条件预测牧草高度变化趋势。Using the data of temperature,precipitation,sunshine hours,relative humidity and the observation data of the growth and development period of natural herbage from May to August in 2004—2019 in Jalaid Banner meteorological station,Xing’an Meng,Inner Mongolia Autonomous Region,the variation characteristics of herbage height and meteorological factors in recent 16 years,and the correlation between herbage height and climatic conditions were analyzed.The results showed that:(1)The average height of herbage in the growth season was 41 cm in recent 16 years and 14.2~55.9 cm in May to August;(2)The average height of herbage in the growth season and the light and warm water conditions had no significant change trend,but the height of herbage increased significantly in August which is 16.5 cm in 16 years.(3)The height of herbage is greatly affected by precipitation,while the change of heat condition has little effect on the growth of herbage.Herbage grows well in more precipitation,fewer hours of sunshine,higher relative humidity of the air,and higher temperatures situation.The regression model of herbage height based on four meteorological factors has good historical fitting effect.It can predict the change trend of herbage height according to the climate conditions in the growing season of that year.

关 键 词：气候 天然牧草 牧草高度 影响 

分 类 号：S54[农业科学—作物学] S162.56