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中国科学院大学学报 ›› 2002, Vol. 19 ›› Issue (2): 129-133.DOI: 10.7523/j.issn.2095-6134.2002.2.006

• 论文 • 上一篇    下一篇

毛乌素沙地荒漠草原狭叶锦鸡儿-小针茅群落地上生物量对气候因子的动态响应

黄富祥, 王跃思, 王明星, 胡非   

  1. 中国科学院大气物理研究所大气边界层物理和大气化学国家实验室, 北京 100029
  • 收稿日期:2001-09-20 修回日期:2001-11-13 发布日期:2002-03-18
  • 作者简介:黄富祥,男,1967年9月生,博士后
  • 基金资助:

    中国科学院王宽诚博士后奖励基金;中国科学院知识创新项目(KZCX2 -2 0 4)资助

Dynamics of the Aboveground Biomass Yield of the Caragana Stenophylla- Stipa spp. Community on Desert Grassland in Mu Us Sandland

HUANG Fu-Xiang, WANG Yue-Si, WANG Ming-Xing, HU Fei   

  1. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics of the Chinese Academy of Sciences, Beijing 100029
  • Received:2001-09-20 Revised:2001-11-13 Published:2002-03-18

摘要:

对毛乌素沙地荒漠草原围封样地狭叶锦鸡儿 小针茅群落地上生物量进行了 7年逐月连续观测,建立了生物量对气候响应的逐月回归模型。研究表明,光、温、水等不同的气候因子在植物生长不同时期表现出不同的影响,其中降水因子在生长季各个月份都是显著影响因子,说明水分的限制作用突出。应用逐月回归模型对三种不同气候条件下生物量的波动范围进行预测,并将逐月回归模型与传统的累积回归模型的模拟结果进行比较,表明在大多数年份逐月回归模型具有更高的精度。逐月回归模型是对传统的累积回归建模方法的有益改进。

关键词: 狭叶锦鸡儿-小针茅群落, 地上生物量, 多元回归分析

Abstract:

Monthly observation of the Caragana Stenophylla-Stipa spp. community aboveground biomass at desert grassland in Mu Us Sandland was made during 1985~1991 and monthly muti-regression models were presented. Precipitation,temperature and sunshine hour is shown to play different role during plant growth and water is the main restricted variable influencing plant growth. The range of biomass change under three different climatic conditions is predicted by applying the monthly models. To show the advantage of the monthly models to the traditional simulated model, the simulated biomass by monthly models and accumulative model were compared.

Key words: Caragana Stenophylla-Stipa spp, community aboveground biomass, multi-regression models

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