气候变化领域集成服务门户(CCPortal): From local to regional: Functional diversity in differently managed alpine grasslands

CCPortal

DOI	10.1016/j.rse.2019.111415
	From local to regional: Functional diversity in differently managed alpine grasslands
	Rossi C.; Kneubühler M.; Schütz M.; Schaepman M.E.; Haller R.M.; Risch A.C.
发表日期	2020
ISSN	00344257
卷号	236
英文摘要	Increasing evidence suggests that ecosystem functions are strongly linked to morphological plant traits, like specific leaf area (SLA) and its variability, which serve as a proxy of functional diversity (FD). Functional diversity is rarely studied at regional scales, and its scale dependence is poorly understood. Capturing trait variations at distinct spatial scales and in differently managed grasslands remains challenging, mainly because a limited number of trait measurements are available and field campaigns are time-consuming. Here, we derived α- and β-FD indices based on SLA measured in the field and estimated from optical satellite data by using molecular absorption profiles of leaves in canopies. We inverted the 1-D columnar radiative transfer model PROSAIL using Sentinel-2 reflectance data at canopy level. From the inversion we were able to distinguish different alpine management types based on retrieved SLA. Model uncertainties were mainly related to the different local plant communities, here represented by functional diversity indices and community-weighted means of traits. Thus, successful PROSAIL application was affected by management type. Management categories displaying lower α-FD, like mowed and fertilized, delivered the most reliable results. Further, we compared FD (i.e., richness, evenness, divergence) from local to regional scales. Locally, management determines the magnitude of FD, whereas on a regional scale, parcel size and the uniformity of agricultural practices control trait diversity. Our results highlight the importance of quantifying β-FD from space as it delivers additional information on the impact of management types, differing from locally measured α-FD values. © 2019 Elsevier Inc.
英文关键词	Functional diversity; Leaf mass per area; Plant traits; PROSAIL; Sentinel-2; Specific leaf area
语种	英语
scopus关键词	Plants (botany); Radiative transfer; Uncertainty analysis; Functional diversity; Leaf mass per area; Plant traits; PROSAIL; Sentinel-2; Specific leaf area; Finite difference method; agricultural practice; alpine environment; ecosystem function; grassland; leaf area; plant community; radiative transfer; satellite data; Sentinel; species diversity
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179594
作者单位	Remote Sensing Laboratories, Dept. of Geography, University of Zurich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland; Research Unit Community Ecology, Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, Birmensdorf, 8903, Switzerland; Department of Research and Geoinformation, Swiss National Park, Chastè, Planta-Wildenberg, Zernez, 7530, Switzerland
推荐引用方式 GB/T 7714	Rossi C.,Kneubühler M.,Schütz M.,et al. From local to regional: Functional diversity in differently managed alpine grasslands[J],2020,236.
APA	Rossi C.,Kneubühler M.,Schütz M.,Schaepman M.E.,Haller R.M.,&Risch A.C..(2020).From local to regional: Functional diversity in differently managed alpine grasslands.Remote Sensing of Environment,236.
MLA	Rossi C.,et al."From local to regional: Functional diversity in differently managed alpine grasslands".Remote Sensing of Environment 236(2020).