干旱区生态环境知识资源中心(Arid): 库布其沙漠北缘8种荒漠灌丛生物量预测模型研究

Arid

	库布其沙漠北缘8种荒漠灌丛生物量预测模型研究
其他题名	The biomass estimation models for eight desert shrub species in northern edge of the Hobq Desert
	党晓宏 1; 高永1 ; 虞毅 2; 蒙仲举 1; 刘阳 3; 王珊 1; 吴昊 1; 丁延龙 1; 刘斌 1
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2016
卷号	30 期号:5 页码:168-174
中文摘要	生物量模型是估算荒漠地区灌丛生物量的重要方法之一。以库布其沙漠北缘8种荒漠灌丛为对象,以实地收获地上生物量和根系全挖法获得地下生物量数据为基础,依据株高(H)和冠幅(C)两个形态因子的复合因子CH作为自变量,以灌丛生物量(W)为因变量构建回归分析模型。通过对判别系数R~2和估计值标准误差SEE分析认为花棒、羊柴、沙柳和沙拐枣灌丛生物量最优模型为W = a + bCH,而梭梭和柠条灌丛生物量最优模型为W = a(CH)~b,柽柳和水柏枝灌丛生物量最优模型为W = a + bCH + c(CH)~2。经验证模型的预测值与实测值拟合率在77. 89% ~ 92. 38%,其预测效果较好。利用W ~ CH生物量模型估算库布其沙漠8种荒漠灌丛生物量,操作简便易行,对今后库布其沙漠地区区域尺度生物量估算和碳汇计量工作具有十分重要的意义。
英文摘要	Biomass estimation modeling is one of the most important methods to predict shrub biomass in desert area. In this paper,8 desert shrub species in northern edge of the Hobq desert were taken as research object. The above-ground biomass and below-ground biomass were obtained by the field-harvest method and whole root digging method. The fresh weight and dry weight were determined to calculate the dry /fresh weight and radio of root and stem of 8 types desert shrubs. Shrub crown (C) and height (H) were used as independent variables to establish the biomass regression models. The optimal model was selected according to the largest determination coefficient (R~2),the smallest standard error of estimate (SEE) and the significance level (P < 0. 01). Results showed W = a + bCH was the optimal model for Hedysarum scoparium,Hedysarum fruticosum,Salix mongolicals and Calligonum mongolicum,W = a(CH)~b was the optimal model of Haloxylon ammodendron and Caragana Korshinskii,W = a + bCH + c(CH)~2 was the optimal model of Tamarix chinensis and Myricaria germanica. The fitting rate of model equation between estimated value and actual value come to 77. 89%-92. 38% after verification. Making use of W ~ CH biomass model to estimate 8 desert shrubs biomasses in Hobq desert is high precision and operated easily. It has very important significance to biomass estimate and carbon sequestration measurement at the regional scale of the Hobq desert.
中文关键词	生物量模型 ; 荒漠灌丛 ; 库布其沙漠
英文关键词	biomass model desert shrub Hobq Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:5696394
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234367
作者单位	1.内蒙古农业大学生态环境学院, 呼和浩特, 内蒙古 010018, 中国; 2.国际竹藤中心, 北京 100102, 中国; 3.内蒙古自治区水利科学研究院, 呼和浩特, 内蒙古 010020, 中国
推荐引用方式 GB/T 7714	党晓宏,高永,虞毅,等. 库布其沙漠北缘8种荒漠灌丛生物量预测模型研究[J]. 内蒙古农业大学,2016,30(5):168-174.
APA	党晓宏.,高永.,虞毅.,蒙仲举.,刘阳.,...&刘斌.(2016).库布其沙漠北缘8种荒漠灌丛生物量预测模型研究.干旱区资源与环境,30(5),168-174.
MLA	党晓宏,et al."库布其沙漠北缘8种荒漠灌丛生物量预测模型研究".干旱区资源与环境 30.5(2016):168-174.