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当前位置: 首页 > 文章 > 锡林郭勒草原植被生产力估算及其影响因素——以巴拉噶尔河流域为例 中国草地学报 2015,37 (4) 66-73
Position: Home > Articles > Estimation of Vegetation Productivity in Xilingol Steppe and Analysis of the Influencing Factors——A Case Study in Balager River Basin Chinese Journal of Grassland 2015,37 (4) 66-73

锡林郭勒草原植被生产力估算及其影响因素——以巴拉噶尔河流域为例

作  者：
张圣微;申芮;陈哲;刘廷玺;恩克巴图;李林超
单  位：
内蒙古锡林郭勒盟西乌珠穆沁旗草原工作站;内蒙古农业大学水利与土木建筑工程学院;水利部海河水利委员会漳卫南运河沧州河务局
关键词：
植被净初级生产力;CASA;光能利用率模型;时空分布;巴拉噶尔河流域
摘  要：
利用CASA模型对内蒙古锡林郭勒草原巴拉噶尔河流域2012年的NPP进行估算,并利用当年7月份研究区的生物量实测数据对模型结果进行了验证,模拟值与实测值间的相关系数R2为0.75,平均相对误差为4.13%,表明该模型在本区域是适用的。在此基础上分析了NPP的时空分布特征及其与降雨量和温度间的相关性,结果显示研究区NPP的空间分布是顺着河流流向的走势自东南向西北方向呈递减的趋势;研究区内NPP在年内月际水平上与两个气候驱动因子存在显著关系,Pearson相关性数据显示降水量和月均温与NPP在0.01水平上显著相关。滞后效应分析显示,NPP主要受降雨影响;双因素协同分析表明,温度和降水量对于NPP存在正协同效应,但温度不如降水作用大。
译  名：
Estimation of Vegetation Productivity in Xilingol Steppe and Analysis of the Influencing Factors——A Case Study in Balager River Basin
作  者：
ZHANG Sheng-wei;SHEN Rui;CHEN Zhe;LIU Ting-xi;Enkebatu;LI Lin-chao;Water Conservancy and Civil Engineering College,Inner Mongolia Agriculture University;Cangzhou Engineering Bureau of Zhangweinan Canals of Haihe River Water Conservancy Commission,Ministry of Water Resources of the People's Republic of China;Grassland Workstation of West Uzhumuqin Banner;
关键词：
Vegetation net primary productivity;;CASA;;Light energy utilization model;;Temporal and spatial distribution;;Balagaer river basin
摘  要：
The vegetation productivity in Balager river basin in Xilingol steppe in 2012 was estimated by CASA model.The measured biomass data in July,2012 were used to calibrate the model.Then the spatial distribution of the vegetation productivity in the study area and the relationship between vegetation productivity and air temperature and precipitation were discussed.The results indicated that the coefficient of determination R2 and the average absolute relative error of estimated values and observed value were0.75 and 4.13%,respectively.The spatial distribution of vegetation productivity in the study area was in downward trend among the river from the southeast to northwest.The vegetation productivity was closely related to precipitation and monthly average air temperature in 0.01 significant levels.Analysis of lagged effect indicated that vegetation productivity was mainly affected by precipitation.The two-factor synergy analysis indicated that the air temperature and precipitation had positive effect on vegetation productivity,however the effect of temperature was weaker than precipitation.

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