DOI: 10.1111/gcb.13860
Scopus记录号: 2-s2.0-85030106568
论文题名: Global-scale patterns of nutrient density and partitioning in forests in relation to climate
作者: Zhang K. ; Song C. ; Zhang Y. ; Dang H. ; Cheng X. ; Zhang Q.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 1 起始页码: 536
结束页码: 551
语种: 英语
英文关键词: allocation
; allometry
; biogeography
; forest biomass
; nutrient storage
; nutrient-based Root:Shoot ratio
Scopus关键词: air temperature
; allometry
; biogeography
; biomass allocation
; forest ecosystem
; global climate
; nutrient
; precipitation (climatology)
; root-shoot ratio
; stand structure
; Gymnospermae
; Magnoliophyta
; calcium
; magnesium
; nitrogen
; phosphorus
; potassium
; biological model
; biomass
; climate change
; forest
; metabolism
; physiology
; plant leaf
; plant root
; shoot
; soil
; temperature
; tree
; tropic climate
; Biomass
; Calcium
; Climate Change
; Forests
; Magnesium
; Models, Biological
; Nitrogen
; Phosphorus
; Plant Leaves
; Plant Roots
; Plant Shoots
; Potassium
; Soil
; Temperature
; Trees
; Tropical Climate
英文摘要: Knowledge of nutrient storage and partitioning in forests is imperative for ecosystem models and ecological theory. Whether the nutrients (N, P, K, Ca, and Mg) stored in forest biomass and their partitioning patterns vary systematically across climatic gradients remains unknown. Here, we explored the global-scale patterns of nutrient density and partitioning using a newly compiled dataset including 372 forest stands. We found that temperature and precipitation were key factors driving the nutrients stored in living biomass of forests at global scale. The N, K, and Mg stored in living biomass tended to be greater in increasingly warm climates. The mean biomass N density was 577.0, 530.4, 513.2, and 336.7 kg/ha for tropical, subtropical, temperate, and boreal forests, respectively. Around 76% of the variation in biomass N density could be accounted by the empirical model combining biomass density, phylogeny (i.e., angiosperm, gymnosperm), and the interaction of mean annual temperature and precipitation. Climate, stand age, and biomass density significantly affected nutrients partitioning at forest community level. The fractional distribution of nutrients to roots decreased significantly with temperature, suggesting that forests in cold climates allocate greater nutrients to roots. Gymnosperm forests tended to allocate more nutrients to leaves as compared with angiosperm forests, whereas the angiosperm forests distributed more nutrients in stems. The nutrient-based Root:Shoot ratios (R:S), averaged 0.30 for R:SN, 0.36 for R:SP, 0.32 for R:SK, 0.27 for R:SCa, and 0.35 for R:SMg, respectively. The scaling exponents of the relationships describing root nutrients as a function of shoot nutrients were more than 1.0, suggesting that as nutrient allocated to shoot increases, nutrient allocated to roots increases faster than linearly with nutrient in shoot. Soil type significantly affected the total N, P, K, Ca, and Mg stored in living biomass of forests, and the Acrisols group displayed the lowest P, K, Ca, and Mg. © 2017 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110614
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
There are no files associated with this item.
作者单位: Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China; Department of Geography, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
Recommended Citation:
Zhang K.,Song C.,Zhang Y.,et al. Global-scale patterns of nutrient density and partitioning in forests in relation to climate[J]. Global Change Biology,2018-01-01,24(1)