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应用生态学报 ›› 2016, Vol. 27 ›› Issue (10): 3070-3080.doi: 10.13287/j.1001-9332.201610.023

• 目次 • 上一篇    下一篇

黑龙江省黑河地区森林地上生物量和NPP估测及时空格局

赵颖慧1, 李思琪1, 甄贞1*, 李凤日1, 魏庆彬2   

  1. 1东北林业大学林学院, 哈尔滨 150040;
    2黑龙江省环境监测中心站, 哈尔滨 150056;
  • 收稿日期:2016-03-17 发布日期:2016-10-18
  • 通讯作者: * E-mail: zhzhen@syr.edu
  • 作者简介:赵颖慧,女,1976年生,副教授,博士. 主要从事数字林业及林业遥感研究. E-mail: zyinghui0925@126.com
  • 基金资助:
    本文由中央高校基本科研业务费专项(DL13EA05-03)资助

Estimation and spatial-temporal pattern of forest aboveground biomass and NPP in Heihe Region, Heilongjiang Province, China

ZHAO Ying-hui1, LI Si-qi1, ZHEN Zhen1*, LI Feng-ri1, WEI Qing-bin2   

  1. 1College of Forestry, Northeast Forestry University, Harbin 150040, China;
    2Environmental Monitoring Center Station of Heilongjiang Province, Harbin 150056, China;
  • Received:2016-03-17 Published:2016-10-18
  • Contact: * E-mail: zhzhen@syr.edu
  • Supported by:
    This work was supported by the Fundamental Research Funds for the Central Universities (DL13EA05-03).

摘要: 根据黑龙江省黑河地区2005和2010年1390块固定样地数据和东北地区树种生物量异速模型,估算各样地单位面积森林地上生物量(AGB)和净初级生产力(NPP).结合该地区2005和2010年两期ETM+遥感图像,运用地统计克里格与协同克里格法对AGB和NPP进行插值,比较多种方差函数的拟合效果,并用最佳插值方法得出该地区AGB和NPP的分布图;通过两期分布图的对比,分析该区域AGB和NPP随时间和空间的动态变化趋势,及其与地形因子(坡向、坡度、海拔)和不同林分类型的时空变化规律.结果表明: 2005—2010年,黑河地区AGB呈现增加趋势,高于40 t·hm-2的生物量面积明显增加;NPP有所下降,出现高NPP地区向低NPP地区转变的现象.AGB和NPP与各地形因子均有一定的相关性,其中,与海拔的相关性明显,说明AGB和NPP的分布受海拔影响显著.研究期间,AGB在各个坡向均有所提高,NPP则降低;AGB和NPP随着坡度增大、海拔增高有增加趋势;常绿针叶林AGB和NPP增长最多,针阔混交林AGB增长最少,落叶阔叶林NPP增长最少.

Abstract: Based on 1390 fixed plots data collected in 2005 and 2010 in Heihe Region of Heilongjiang Province, biomass allometric models of tree species in northeastern China were applied to calculate aboveground biomass (AGB) and net primary productivity (NPP). Based on ETM+ ima-geries in 2005 and 2010, Kriging and co-Kriging methods in geostatistics were applied to interpolate AGB and NPP and different variogram models were compared. The distribution maps of AGB and NPP were produced using the best interpolation method. The change of AGB and NPP over time and space and the impacts of stand types and terrain factors (aspect, slope and altitude) on the distributions of AGB and NPP were analyzed by comparing the distribution maps in different years. The results indicated that AGB had an increasing trend and areas with AGB higher than 40 t·hm-2 also increased. However, NPP decreased from 2005 to 2010. Some high NPP regions were changed into low NPP regions. AGB and NPP were correlated with forest terrain factors, especially altitude, which indicated that the distribution of biomass and NPP were highly influenced by altitude. During the study period, AGB increased at all slope aspects while NPP decreased, AGB and NPP had an increasing trend with raised slope degree andaltitude, the AGB and NPP of evergreen coniferous forest increased most, and the AGB of mixed deciduous-coniferous forest and NPP of broad-leaved deciduous forest had the least increase.