干旱区生态环境知识资源中心(Arid): 克鲁伦河流域生长季有效温水组合对草原群落生物量的影响

Arid

	克鲁伦河流域生长季有效温水组合对草原群落生物量的影响
其他题名	The effect of temperature and precipitation during the growing season on the biomass of steppe communities in the Herlen Basin,northern China
	乌云娜 1; 张凤杰 1; 裴浩 2; 姜健 1
来源期刊	草业学报
ISSN	1004-5759
出版年	2012
卷号	21 期号:2 页码:227-232
中文摘要	利用克鲁伦河流域1958-2005年近半个世纪的逐日气温与降水量观测资料及23年(1983-2005)草原群落干物质产量资料,探讨了"有效积温"和"有效降水量"的变化规律及温水组合与草原群落生物量的相关性,得出近50年间>10℃的有效积温呈明显的上升趋势,其距平值年际间变化差异显著,具有明显的波动性。生长季降水量的增减虽无明显规律,但其距平值的变化呈上升趋势,时间尺度上波动性较大。1983-2005年期间,>10℃有效积温与有效降水量之间呈正相关关系(R=0.620 5),群落生物量与观测年>10℃的有效积温呈正相关性但不明显,与有效降水量之间呈显著的正相关关系(R=0.704 8,P<0.001)。群落生物量(Y)与有效降水量(X1)和>10℃有效积温(X_2)之间的二元线性回归方程为Y=71.409+0.334 X_1-0.020 X_2,R=0.717(P<0.001)。合理的水热配置最有利于植被的生长,有效温水组合共同影响着半干旱区草原群落的生产力。
英文摘要	Regression analysis between dry biomass and the corresponding "effective accumulated temperature" or "effective accumulated precipitation" of 23 years was done using daily temperature and precipitation observations from the past 48 years(1958-2005).The effective temperature(>10℃) showed an obvious upward trend but there were significantly different anomalies.There were no obvious variations of annual precipitation,but anomalies increased significantly(i.e.,differed significantly between years).Effective precipitation during the growing season was an important resource and the effective accumulated temperature(>10℃) and effective accumulated precipitation showed a positive correlation(R=0.620 5).The biomass and effective accumulated temperature(>10℃)did not reach significant levels,but effective accumulated precipitation showed a significant positive correlation.The relation of biomass with configurations of effective accumulated temperature and effective accumulated precipitation was Y=71.409+0.334X_1-0.020X_2 and reached significant levels(P<0.001).Suitable configurations of effective accumulated temperature and effective accumulated precipitation played the most important role in the growth of vegetation,while suitable configurations of temperature and precipitation affected productivity of steppe communities in semi-arid areas.
中文关键词	草原群落 ; 生长季 ; 有效积温 ; 有效降水量 ; 生物量
英文关键词	steppe community growing season effective accumulated temperature effective accumulated precipitation biomass
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:4506470
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227786
作者单位	1.大连民族学院环境与资源学院, 大连, 辽宁 116600, 中国; 2.内蒙古自治区气象局, 呼和浩特, 内蒙古 010051, 中国
推荐引用方式 GB/T 7714	乌云娜,张凤杰,裴浩,等. 克鲁伦河流域生长季有效温水组合对草原群落生物量的影响[J],2012,21(2):227-232.
APA	乌云娜,张凤杰,裴浩,&姜健.(2012).克鲁伦河流域生长季有效温水组合对草原群落生物量的影响.草业学报,21(2),227-232.
MLA	乌云娜,et al."克鲁伦河流域生长季有效温水组合对草原群落生物量的影响".草业学报 21.2(2012):227-232.