globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.14093
Scopus记录号: 2-s2.0-85043265821
论文题名:
Effects of climate on soil phosphorus cycle and availability in natural terrestrial ecosystems
作者: Hou E.; Chen C.; Luo Y.; Zhou G.; Kuang Y.; Zhang Y.; Heenan M.; Lu X.; Wen D.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期:8
起始页码: 3344
结束页码: 3356
语种: 英语
英文关键词: climate ; global pattern ; phosphorus cycle ; soil phosphorus availability ; soil property
Scopus关键词: climate effect ; nutrient availability ; phosphorus cycle ; physicochemical property ; precipitation (climatology) ; soil chemistry ; soil organic matter ; temperature effect ; terrestrial ecosystem
英文摘要: Climate is predicted to change over the 21st century. However, little is known about how climate change can affect soil phosphorus (P) cycle and availability in global terrestrial ecosystems, where P is a key limiting nutrient. With a global database of Hedley P fractions and key-associated physiochemical properties of 760 (seminatural) natural soils compiled from 96 published studies, this study evaluated how climate pattern affected soil P cycle and availability in global terrestrial ecosystems. Overall, soil available P, indexed by Hedley labile inorganic P fraction, significantly decreased with increasing mean annual temperature (MAT) and precipitation (MAP). Hypothesis-oriented path model analysis suggests that MAT negatively affected soil available P mainly by decreasing soil organic P and primary mineral P and increasing soil sand content. MAP negatively affected soil available P both directly and indirectly through decreasing soil primary mineral P; however, these negative effects were offset by the positive effects of MAP on soil organic P and fine soil particles, resulting in a relatively minor total MAP effect on soil available P. As aridity degree was mainly determined by MAP, aridity also had a relatively minor total effect on soil available P. These global patterns generally hold true irrespective of soil depth (≤10 cm or >10 cm) or site aridity index (≤1.0 or >1.0), and were also true for the low-sand (≤50%) soils. In contrast, available P of the high-sand (>50%) soils was positively affected by MAT and aridity and negatively affected by MAP. Our results suggest that temperature and precipitation have contrasting effects on soil P availability and can interact with soil particle size to control soil P availability. © 2018 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110285
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, United States; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Griffith School of Environment, Griffith University, Nathan, QLD, Australia; Institute of Forestry Ecology, Environment and Protection, The Key Laboratory of Forest Ecology and Environment of State Forestry Administration, Chinese Academy of Forestry, Beijing, China; Department of Science, Information Technology and Innovation, Queensland Government, Brisbane, QLD, Australia

Recommended Citation:
Hou E.,Chen C.,Luo Y.,et al. Effects of climate on soil phosphorus cycle and availability in natural terrestrial ecosystems[J]. Global Change Biology,2018-01-01,24(8)
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