不同观测尺度下蒸散量与土壤含水量的评估

Assessment of Evapotranspiration and Soil Moisture Content Across Different Scales of Observation.

作者信息

Verstraeten Willem W, Veroustraete Frank, Feyen Jan

机构信息

Geomatics Engineering, Katholieke Universiteit Leuven (K.U.Leuven), Celestijnenlaan 200E, BE-3001 Heverlee, Flanders, Belgium.

Centre for Remote Sensing and Earth Observation Processes, Flemish Institute for Technological Research (VITO), Boeretang 200, BE-2400 Mol, Flanders, Belgium.

出版信息

Sensors (Basel). 2008 Jan 9;8(1):70-117. doi: 10.3390/s8010070.

DOI:10.3390/s8010070

PMID:27879697

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3681150/

Abstract

The proper assessment of evapotranspiration and soil moisture content arefundamental in food security research, land management, pollution detection, nutrient flows,(wild-) fire detection, (desert) locust, carbon balance as well as hydrological modelling; etc.This paper takes an extensive, though not exhaustive sample of international scientificliterature to discuss different approaches to estimate land surface and ecosystem relatedevapotranspiration and soil moisture content. This review presents:(i) a summary of the generally accepted cohesion theory of plant water uptake andtransport including a shortlist of meteorological and plant factors influencing planttranspiration;(ii) a summary on evapotranspiration assessment at different scales of observation (sapflow,porometer, lysimeter, field and catchment water balance, Bowen ratio,scintillometer, eddy correlation, Penman-Monteith and related approaches);(iii) a summary on data assimilation schemes conceived to estimate evapotranspirationusing optical and thermal remote sensing; and(iv) for soil moisture content, a summary on soil moisture retrieval techniques atdifferent spatial and temporal scales is presented.Concluding remarks on the best available approaches to assess evapotranspiration and soilmoisture content with and emphasis on remote sensing data assimilation, are provided.

摘要

对蒸散量和土壤湿度的恰当评估在粮食安全研究、土地管理、污染检测、养分流动、（野）火探测、（沙漠）蝗虫监测、碳平衡以及水文建模等方面至关重要。本文选取了大量（虽非详尽无遗）的国际科学文献样本，以探讨估算地表和生态系统相关蒸散量及土壤湿度的不同方法。本综述呈现了：（i）植物水分吸收和运输的普遍接受的内聚力理论总结，包括影响植物蒸腾作用的气象和植物因素清单；（ii）不同观测尺度（液流、气孔计、蒸渗仪、田间和集水区水平衡、鲍恩比、闪烁仪、涡度相关法、彭曼 - 蒙特斯及相关方法）下蒸散量评估的总结；（iii）利用光学和热遥感估算蒸散量的数据同化方案总结；以及（iv）针对土壤湿度，给出了不同时空尺度下土壤湿度反演技术的总结。提供了关于评估蒸散量和土壤湿度的最佳可用方法的结论性评论，重点强调了遥感数据同化。