Global evapotranspiration products from GLEAM(Global Land Evapotranspiration Amsterdam Model) and MOD 16(MODIS Global Evapotranspiration Project) have been widely validated and applied.However,due to insufficient observational data,there is still a lack of products validation in plateau areas.This study took Lake Ranwu,Yamzho YumCo,Nam Co,Siling Co and Taro Co basins as study area,and applied basin water balance,correlation coefficient,relative error,root mean square error and Kling-Gupta coefficient to verify and evaluate the accuracy of GLEAM and MOD 16 products in the Qinghai-Tibet Plateau.The results demonstrated that GLEAM products were underestimated in Lake Ranwu,Siling Co and Taro Co basins,slightly overestimated in Yamzho YumCo and Nam Co basins,while MOD 16 products were slightly underestimated in Siling Co basin and overestimated in other lake basins.GLEAM and MOD 16 products were overestimated in dry year,and underestimated in wet year in the five lake basins.GLEAM products showed high accuracy in Lake Ranwu,Yamzho YumCo and Siling Co basins,while MOD 16 products had high accuracy in Nam Co and Taro Co basins.In general,the accuracy of GLEAM products was significantly better than that of MOD 16 products in the central and southeastern lake basins of the Qinghai-Tibet Plateau on the annual scale and the multi-year average scale.This results provided an important reference for the selection of evapotranspiration products suitable for the Qinghai-Tibet Plateau.
基于不同类型主体功能区的发展定位与碳排放驱动要素分解,提出有针对性的区域差异化低碳发展路径是推进主体功能区可持续发展的重要内容.基于调研资料,分析了广东省各主体功能区自2010年以来的碳排放演变特征,从人口效应、经济效应、能源强度效应、产业结构效应以及碳排放因子效应五个因素对造成不同主体功能区碳排放差异的原因进行了分析.要素分解发现,经济规模和人口数量增长对优化开发区碳排放量增长的贡献率最大;产业结构的优化从2012年开始成为使优化开发区碳排放量降低的影响因素,对重点开发区和生态发展区碳排放量降低的作用仍不明显;产业能源强度变动均使三类功能区碳排放量降低,但是贡献率呈现明显差异.建议:(1)加快发展优化开发区服务业,积极推动实施居民碳排放管理;(2)重点开发区应以提高能效和推进低碳技术为主实施低碳转型;(3)生态发展区要大力推广清洁能源,促使农业低碳化发展.