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中国东北部贝加尔针茅(Stipa baicalensis)草原生产量与生态因素的关系及其预测模型
引用本文:王昱生,赵妮珊,徐中儒,李源,侯中田,吴秀清.中国东北部贝加尔针茅(Stipa baicalensis)草原生产量与生态因素的关系及其预测模型[J].植物生态学报,1991,15(3):286-295.
作者姓名:王昱生  赵妮珊  徐中儒  李源  侯中田  吴秀清
作者单位:东北农学院,东北农学院,东北农学院,东北农学院,东北农学院,东北农学院 哈尔滨 100030,哈尔滨 100030,哈尔滨 100030,哈尔滨 100030,哈尔滨 100030,哈尔滨 100030
摘    要: 本文报道了贝加尔针茅(Stipa baicalensis)草原生产量与主要生态因素积温、降水和土壤有机质含量的关系。讨论了这些生态因素及其交互作用对草原生产量的影响。采用二次正交旋转回归设计和双重组合设计方法建立了贝加尔针茅草原生产量的预测模型,经对该模型的检验表明,所建模型可以在草原畜牧业生产中广泛应用.

关 键 词:贝加尔针茅草原  生产量预测模型  生态因素

THE RELATIONSHIPS BETWEEN PRIMARY PRODUCTION AND THE MAJOR ECOLOGICAL FACTORS AND ITS PREDICTION MODELS IN STIPA BAICALENSIS STEPPE IN NORTHEASTERN CHINA
Wang Yu-sheng Zhao Ni-shan Xu Zhong-ru Li Yuan Hou Zhong-tian Wu Xiu-qing.THE RELATIONSHIPS BETWEEN PRIMARY PRODUCTION AND THE MAJOR ECOLOGICAL FACTORS AND ITS PREDICTION MODELS IN STIPA BAICALENSIS STEPPE IN NORTHEASTERN CHINA[J].Acta Phytoecologica Sinica,1991,15(3):286-295.
Authors:Wang Yu-sheng Zhao Ni-shan Xu Zhong-ru Li Yuan Hou Zhong-tian Wu Xiu-qing
Abstract:The paper, a synthesis based on data from our own investigation on Stipa baicalensis steppe for the period 1986-1988, deals with the relationships among biotic and abiotic factors at community ecology level. Analysis is applied to aboveground net primary production (ANPP), the energy source for livestock production process, with respect to accumulated temperature(≥5℃)(X1),rainfall in the growth season of the steppe plants (X2),and content of organic matter of surface soil (X3), which are the abotic variables most often used to explain variation in ANPP. The models predicting ANPP in Stipa baicalensis steppe were structured in term of X1, X2, and X3. The predictive power of the models was found to be very high, and the models were successfully validated in three cases with an independent data set. The prediction model that gave the best fit in Stipa baicalensis steppe wasY 528.1328 + 12.1948X1 +82.5701001X2 +57.1987X3 + 12.6375X1X2- 6.1265X1X3 + 28.0875X2X3 - 36.1774X12 - 31.4429X22- 26.2633X32We have also made, in detail, the analysis of the relationships among ANPP and 3 ecological factors. ANPP was responsive to all of 3 ecological factors discussed in the paper. Action intensity, which has an effect upon ANPP, can be indicated by a contribution rate. The contribution rates of X1,X2, and X3 were 1.069, 2.0513 and 1.8889, respectively.
Keywords:Stipa steppe  Production prediction model  Ecological factor  
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