气候变化领域集成服务门户(CCPortal): Primary productivity of managed and pristine forests in Sweden

CCPortal

DOI	10.1088/1748-9326/ab9a6b
	Primary productivity of managed and pristine forests in Sweden
	Ahlström A.; De Jong G.E.; Nijland W.; Tagesson T.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Land use is affecting 70% of global ecosystems and their functioning. Forest management is a regionally dominant land use and affects forest ecosystems by changing both structure and functioning, but its impact on primary productivity is not well known. Here we investigated the effect of forest management on primary productivity by comparing managed secondary forests with relatively pristine unmanaged primary forests in Sweden. As proxy for primary productivity we used the satellite-based vegetation index NIRv which has been shown to be closely and linearly related to primary productivity. We produced a digital map of 390 primary forests across Sweden, and extracted NIRv over these and surrounding secondary forests forming spatially proximate pairs. By comparing the primary and secondary forests NIRv in the pairs we found that secondary forests on average show higher NIRv, but the highest values were found in primary forests. The difference in NIRv between pairs is related to their difference in mean stand age, and at equal stand age the NIRv of primary forests is higher than in their paired secondary forests. Overall, management leads to increased NIRv through regeneration of forests stands that reduce their mean age. However, primary forests show higher NIRv when controlling for age, despite being found on higher altitudes and on steeper slopes with lower soil moisture, which suggests that forest management other than regeneration is not increasing primary productivity of Swedish forests. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Boreal; Carbon cycle; Forestry; Land use impacts; Old growth forest; Primary forest; Pristine forest
语种	英语
scopus关键词	Altitude control; Ecosystems; Land use; Photosynthesis; Phytoplankton; Soil moisture; Digital map; Forest ecosystem; Mean ages; Primary forest; Primary productivity; Secondary forests; Steeper slopes; Vegetation index; Reforestation; digital map; forest management; land use change; pristine environment; regeneration; satellite data; soil moisture; vegetation index; Sweden
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153727
作者单位	Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, Lund, 223 62, Sweden; Center for Middle Eastern Studies, Lund University, Box 201, Lund, SE-221 00, Sweden; Department of Physical Geography, Universiteit Utrecht, Vening Meineszgebouw A, Princetonlaan 8a, Utrecht, 3584 CB, Netherlands; Department of Geosciences and Natural Resource Management, University of Copenhagen, ∅ster Voldgade 10, Copenhagen, DK-1350, Denmark
推荐引用方式 GB/T 7714	Ahlström A.,De Jong G.E.,Nijland W.,et al. Primary productivity of managed and pristine forests in Sweden[J],2020,15(9).
APA	Ahlström A.,De Jong G.E.,Nijland W.,&Tagesson T..(2020).Primary productivity of managed and pristine forests in Sweden.Environmental Research Letters,15(9).
MLA	Ahlström A.,et al."Primary productivity of managed and pristine forests in Sweden".Environmental Research Letters 15.9(2020).