干旱区生态环境知识资源中心(Arid): 基于SPAC原理建立内蒙古草原干旱指标

Arid

	基于SPAC原理建立内蒙古草原干旱指标
其他题名	Drought Index of Steppe in Inner Mongolia based on SPACC Principle
	侯琼 1; 陈素华 2; 乌兰巴特尔 2
ISSN	1000-694X
出版年	2008
卷号	28 期号:2 页码:326-331
中文摘要	利用近20多年气象资料和土壤水分及牧草产量资料,采用对比分析和简化的水量平衡方法,建立了典型草原、草甸草原、荒漠草原需水量及生长季内草地蒸散系数（Kc）随时间变化经验方程,确定出不同草原类型区需水量和Kc系数,草甸草原、典型草原和荒漠草原49月的需水量分别是390 mm、360 mm和180 mm,平均Kc系数为0.62、0.58和0.30;以SPAC理论为基础,给出草原旱情指数（K）的计算方法,结合牧草减产率（I）,提出干旱等级指标,当0.8〉K≥0.6、25%K≥0.4、45%65%时为重旱。经3 a的使用检验,指标的一致性达到75.3%,与牧业气象报表描述的旱情基本吻合,结果比较理想。
英文摘要	According to data of soil water,grass biomass output and meteorological factors in recent 20 years,and by methods of contrasting analysis and water quantity balance,the empirical equations of water requirement and evapotranspiration rate changing with time in growth season of the meadow,the typical and the desert steppes were formulated in the paper.The water requirements of the meadow,the typical and the desert steppes were respectively 390 mm,360 mm and 180 mm during the period from April to September,their corresponding evaportranspiration rates（Kc） were 0.62,0.58 and 0.30.Based on the principle of SPAC,the calculating method of steppe drought index（K）was provided,which was combined with the reduction rate of grass yield（I） the drought grading index system was further put forward.Slight drought： 0.8〉K≥0.6,25%K≥0.4,45%65%.The consistency of the index system reached 75.3% in three years test,and the drought description of this system was generally identical with that of the animal husbandry meteorological report.
中文关键词	干旱指标 ; 草原 ; SPAC原理
英文关键词	drought index steppe SPAC principle
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3222888
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223125
作者单位	1.内蒙古气象科学研究所, 呼和浩特, 内蒙古 010051, 中国; 2.内蒙古生态与农业气象中心, 呼和浩特, 内蒙古 010051, 中国
推荐引用方式 GB/T 7714	侯琼,陈素华,乌兰巴特尔. 基于SPAC原理建立内蒙古草原干旱指标[J],2008,28(2):326-331.
APA	侯琼,陈素华,&乌兰巴特尔.(2008).基于SPAC原理建立内蒙古草原干旱指标.,28(2),326-331.
MLA	侯琼,et al."基于SPAC原理建立内蒙古草原干旱指标".28.2(2008):326-331.