We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
黑龙江省黑河地区森林地上生物量和 NPP估测及时空格局.
- Authors
赵颖慧; 李思琪; 甄贞; 李凤日; 魏庆彬
- 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+ imageries 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 and altitude, 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.
- Publication
Yingyong Shengtai Xuebao, 2016, Vol 27, Issue 10, p3070
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.201610.023