气候变化领域集成服务门户(CCPortal): Land-Atmosphere Drivers of Landscape-Scale Plant Water Content Loss

CCPortal

DOI	10.1029/2020GL090331
	Land-Atmosphere Drivers of Landscape-Scale Plant Water Content Loss
	Feldman A.F.; Short Gianotti D.J.; Trigo I.F.; Salvucci G.D.; Entekhabi D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Plant water content observations using microwave remote sensing measurements allow monitoring of landscape-scale plant water stress. During soil drying following rainfall events, we use a Granger causality framework to quantify the degree to which environmental factors drive satellite-based plant water content loss across Africa's diverse biomes. After soil drying into the water-limited regime, satellite observations show that plants dry while solar radiation, vapor pressure deficit, and diurnal temperature amplitude increase. We find that soil drying primarily drives plant water content loss across African drylands, though with regional effects of diurnal temperature amplitude increases (found to indicate vapor pressure deficit increases here). We also detect interactions between these factors that reinforce plant drying during periods of soil moisture loss. Our results provide observational evidence across Africa that individual and interactive components of surface drying and heating can all drive plant water stress, especially during intermittent poststorm drying periods. ©2020. The Authors.
英文关键词	Drying; Hydrostatic pressure; Remote sensing; Soil moisture; Diurnal temperatures; Environmental factors; Granger Causality; Microwave remote sensing; Plant water content; Plant water stress; Satellite observations; Vapor pressure deficit; Plants (botany); air-soil interaction; biome; environmental factor; landscape; plant water relations; rainfall; remote sensing; satellite data; soil moisture; vapor pressure; water stress; Africa
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169443
作者单位	Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States; Instituto Português do Mar e da Atmosfera I.P. (IPMA), Lisbon, Portugal; Instituto Dom Luiz (IDL), Lisbon, Portugal; Department of Earth and Environment, Boston University, Boston, MA, United States
推荐引用方式 GB/T 7714	Feldman A.F.,Short Gianotti D.J.,Trigo I.F.,et al. Land-Atmosphere Drivers of Landscape-Scale Plant Water Content Loss[J],2020,47(22).
APA	Feldman A.F.,Short Gianotti D.J.,Trigo I.F.,Salvucci G.D.,&Entekhabi D..(2020).Land-Atmosphere Drivers of Landscape-Scale Plant Water Content Loss.Geophysical Research Letters,47(22).
MLA	Feldman A.F.,et al."Land-Atmosphere Drivers of Landscape-Scale Plant Water Content Loss".Geophysical Research Letters 47.22(2020).