华东师范大学学报(自然科学版) ›› 2018, Vol. 2018 ›› Issue (1): 163-170.doi: 10.3969/j.issn.1000-5641.2018.01.016

• 地理学 • 上一篇    

北京市门头沟区2003—2014年植被初级生产力时空变化

王九中1, 邬明权2   

  1. 1. 北京林业大学 林学院, 北京 100083;
    2. 中国科学院 遥感与数字地球研究所 遥感科学国家重点实验室, 北京 100101
  • 收稿日期:2017-03-31 出版日期:2018-01-25 发布日期:2018-01-11
  • 通讯作者: 邬明权,男,副教授,研究方向为生态遥感.E-mail:wumq@radi.ac.cn. E-mail:wumq@radi.ac.cn
  • 作者简介:王九中,男,博士研究生.研究方向为生态遥感、生态学.E-mail:wangjiuzhong0103@163.com.
  • 基金资助:
    中国科学院青年创新促进会资助(2017089)

Spatio-temporal analysis about the primary productivity of Mentougou District in Beijing from 2003 to 2014

WANG Jiu-zhong1, WU Ming-quan2   

  1. 1. The College of Forestry of Beijing Forestry University, Beijing 100083, China;
    2. The State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2017-03-31 Online:2018-01-25 Published:2018-01-11

摘要: 采用CASA模型和30m分辨率Landsat数据生成了门头沟区2003-2014年的植被净初级生产力(NPP)产品,分析了门头沟区NPP的空间分异特征,基于MODIS年NPP产品分析了门头沟区2003-2014年NPP的年际变化特征,基于MODIS植被总初级生产力(GPP)时间序列数据分析了门头沟区典型年份的年内GPP变化特征.结果表明:2003-2014年门头沟区NPP受地形及人为因素影响,低值区主要沿河流谷地及东部河流出山口处分布,在整体区域上呈现四周高、中间低的特征;自2005年以来年际NPP总体平稳,没有明显的增加或减少趋势;GPP年内波动明显,5-9月GPP/NPP的差异对不同年份间GPP/NPP差异的贡献最大.

关键词: 植被净初级生产力, CASA模型, Landsat, MODIS, EVI

Abstract: Ten years NPP products of Mentougou District from 2003 to 2014 are generated using CASA model and Landsat remote sensing data. It is used to show the spatial distribution characteristic about Mentougou District' NPP. Inter-annual variability characteristic about Mentougou District' annual amount NPP is analyzed using MODIS17A3 products from 2003 to 2014. The intra-annual variability characteristic about Mentougou District' GPP was analyzed based on MODIS17A2 product in some typical years (namely 2004, 2007, 2008, 2009, 2011, 2012). The results show that the NPP of Mentougou District has a significant spatial differentiation characteristic that the value of NPP is low on median and it is high on other region. The NPP value is very low distributed along the river valleys. The annual amount NPP has no significant increasing or decreasing trend from 2005. GPP fluctuated significantly during the year. The differences in GPP/NPP between May and September contributed the most to the differences in GPP/NPP among different years.

Key words: NPP, CASA model, landsat, MODIS, EVI

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