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| 高寒矮嵩草草甸地上生物量和叶面积指数的季节动态模拟 | |
| 引用本文： | 孙建文,李英年,宋成刚,王建雷,张法伟,王勤学. 高寒矮嵩草草甸地上生物量和叶面积指数的季节动态模拟[J]. 中国农业气象, 2010, 31(2): 230-234. DOI: 10.3969/j.issn.1000-6362.2010.02.012 |
| 作者姓名： | 孙建文 李英年 宋成刚 王建雷 张法伟 王勤学 |
| 作者单位： | 1. 中国科学院西北高原生物研究所,西宁,810001;中国科学院研究生院,北京,100049 2. 中国科学院西北高原生物研究所,西宁,810001;中国科学院高原生物适应与进化重点实验室,西宁,810001 3. 日本国立环境研究所,日本筑波,3050053 |
| 基金项目： | 中国科学院西部行动计划项目(KZCX2-XB2-06-01); 中日合作项目“温暖化影响的早期监测网络系统建设” |
| 摘 要： | 基于2007年中国科学院海北高寒草甸生态系统定位站植被和气象观测资料,探讨了高寒矮嵩草草甸群落叶面积指数、地上生物量的季节动态变化及其数学模型,分析了叶面积指数与地上生物量的相互关系,以及气象条件对叶面积指数和地上生物量的影响。结果表明,高寒矮嵩草草甸群落植被生长期地上生物量的季节动态变化可以用Logistic回归模型拟合;植被叶面积指数的季节动态变化可以用三次函数曲线拟合,叶面积指数受温度和降水量的影响明显,与植物生长期日平均气温≥3℃的积温和降水累积量分别有三次函数的拟合关系,而考虑与积温和降水累积量的综合关系可用二元二次函数拟合;同时,叶面积指数与地上生物量之间有二次函数的拟合关系。 |
| 关 键 词： | 高寒矮嵩草草甸 叶面积指数 地上生物量 季节动态 |
Seasonal Dynamics Model of Aboveground Biomass and Leaf Area Index on Alpine Kobresia humilis Meadow in Qinghai-Tibet Plateau |
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| SUN Jian-wen,LI Ying-nian,SONG Cheng-gang,WANG Jian-lei,ZHANG Fa-wei,WANG Qin-xue. Seasonal Dynamics Model of Aboveground Biomass and Leaf Area Index on Alpine Kobresia humilis Meadow in Qinghai-Tibet Plateau[J]. Chinese Journal of Agrometeorology, 2010, 31(2): 230-234. DOI: 10.3969/j.issn.1000-6362.2010.02.012 | |
| Authors: | SUN Jian-wen LI Ying-nian SONG Cheng-gang WANG Jian-lei ZHANG Fa-wei WANG Qin-xue |
| Affiliation: | 1.Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810001,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100049;3. Key Laboratory of Adaptation and Evolution of Plateau Biota,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810001;4.National Institute for Environmental Studies,Tsukuba,Ibaraki 3050053,Japan) |
| Abstract: | Based on the alpine Kobresia humilis meadow vegetation and weather data obtained at Haibei Alpine Meadow Ecosystem Research Station,CAS in 2007,we discussed the seasonal dynamic changes of the Leaf Area Index (LAI) and Aboveground Biomass (AB),analyzed and simulated the correlation between LAI and AB,as well as the influence of climate on the process of LAI and AB. The results showed that during the plant growing season,the seasonal dynamic variation of AB could be fitted by the Logistic Regression model,an... |
| Keywords: | Alpine Kobresia humilis meadow Leaf area index (LAI) Aboveground biomass(AB) Seasonal dynamic variation |
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