Impacts of environmental change on climate and ecosystem in southern Ecuador

目前这项建议的主要目的是：(1)揭示气候和土地利用变化对生态系统平台区域气候的影响；(2)通过测试两种不同的方法，研究气候变化对选定生物群体的生物多样性的影响；(3)在Numex实验框架内调查来自远程来源的大气养分沉积及其在环境变化下的未来发展；(4)通过提供基于遥感数据的植被活动数据，为研究组提供支助。(I)利用以前研究期间收集的综合数据集，深入分析出现反常的纬向翻转Walker环流(厄尔尼诺/拉尼娜事件)的天气情况。此外，将使用区域气候(WRF)和SVAT模式(CLM)的耦合模式套件来对土地利用和全球气候变化的联合情景进行模拟运行。(2)气候变化情景的缩小的温度数据将用物种面积办法和蛾、土壤螨虫和树木的能量当量规则来测试对生物多样性的影响。(3)利用对雾和雨水沉积的持续观察、包含大气化学遥感产品的反向轨迹模拟以及未来气候/排放情景模拟，以查明山林及其偏远来源目前和未来的大气肥力状况。(4)将向研究单位提供不同传感器的植被产品(NDVI、LAI、GPP)。

The main aim of the proposal at hand is (i) to unveil the impacts of climate and land use change on the regional climate of the ecosystem platform, (ii) to examine effects of climate change on biodiversity for selected organismic groups by testing two different approaches, (iii) to investigate atmospheric nutrient deposition from remote sources in the framework of the NUMEX experiment as well as its future development under environmental change, and (iv) to support the research unit by providing data on vegetation activity based on remotely sensed data. (i) encompasses an in-depth analysis of weather situations with an anomalous zonal overturning Walker circulation (El Niño/La Niña events) by means of a comprehensive data set gathered during previous studies. Additionally, a coupled model suite of a regional climate (WRF) and a SVAT model (CLM) will be used to conduct simulation runs for the joint scenarios of land use and global climate change. (ii) Downscaled temperature data for the climate change scenarios will be used to test effects on biodiversity with the species-area approach and the energetic-equivalence rule for moths, soil mites and trees. (iii) The continuous observation of fog- and rain-water deposition, back-trajectory modelling encompassing remotely sensed products of atmospheric chemistry and future climate/emission scenario runs are applied to disentangle present-day and future atmospheric fertilization of the mountain forest and its remote sources. (iv) Vegetation products (NDVI, LAI, GPP) of different sensors will be made available to the research unit.