气候变化领域集成服务门户(CCPortal): Satellite-observed decrease in the sensitivity of spring phenology to climate change under high nitrogen deposition

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DOI	10.1088/1748-9326/aba57f
	Satellite-observed decrease in the sensitivity of spring phenology to climate change under high nitrogen deposition
	Wang X.; Wu C.; Zhang X.; Li Z.; Liu Z.; Gonsamo A.; Ge Q.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Spring phenology is a sensitive indicator of climate change and has substantial impacts on the carbon cycle. The global N cycle has been greatly disturbed by anthropogenic activities resulting in altered atmospheric N deposition worldwide. Research has been focused on the changes in the spring phenology and its covariations with climatic factors. However, the influences of N deposition on spring phenology have not been well documented to date. Herein, we investigated the effects of N deposition on the start of growing season (SOS) in continental United States (CONUS) during the years 1986-2015 using the normalized difference vegetation index (NDVI) datasets derived from both the third generation NDVI dataset and the Moderate Resolution Imaging Spectroradiometer (MODIS). We observed that N deposition could only explain approximately 5% of temporal variation in SOS in CONUS. However, the sensitivities of SOS in response to unit change in both temperature (ST) and precipitation (SP) showed clear decreasing spatial patterns with increasing N deposition. The ST generally decreased from-6 d/°C in low N deposition regions (<2 kg ha-1) to-4 d/°C in areas with N deposition >4 kg ha-1. Furthermore, the positive SP also showed a continuously decreasing pattern with the increase in N deposition, but the negative SP was gradually weakened when N deposition was >1.0 kg ha-1. The results have important implications as it reveals the role of N deposition on spring plant phenology, and strongly suggest the consideration of N deposition effects when analyzing or predicting spring phenology in response to future climate change. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	continental United States; nitrogen deposition; precipitation sensitivity; start of growing season; temperature sensitivity
语种	英语
scopus关键词	Biology; Forestry; Nitrogen; Radiometers; Anthropogenic activity; Climatic factors; Moderate resolution imaging spectroradiometer; Normalized difference vegetation index; Sensitive indicator; Spatial patterns; Temporal variation; Third generation; Climate change; atmospheric deposition; carbon cycle; climate change; growing season; NDVI; observational method; phenology; satellite data; sensitivity analysis; soil nitrogen; spatiotemporal analysis; spring (season); United States
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/153828
作者单位	Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciencesm, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Geospatial Sciences Center of Excellence (GSCE), Department of Geography, South Dakota State University, 1021 Medary Ave., Wecota Hall 506B, Brookings, SD 57007-3510, United States; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, China; School of Earth, Environment and Society, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada
推荐引用方式 GB/T 7714	Wang X.,Wu C.,Zhang X.,et al. Satellite-observed decrease in the sensitivity of spring phenology to climate change under high nitrogen deposition[J],2020,15(9).
APA	Wang X..,Wu C..,Zhang X..,Li Z..,Liu Z..,...&Ge Q..(2020).Satellite-observed decrease in the sensitivity of spring phenology to climate change under high nitrogen deposition.Environmental Research Letters,15(9).
MLA	Wang X.,et al."Satellite-observed decrease in the sensitivity of spring phenology to climate change under high nitrogen deposition".Environmental Research Letters 15.9(2020).