AmeriFlux FLUXNET-1F US-Ses Sevilleta shrubland

This is the AmeriFlux Management Project (AMP) created FLUXNET-1F version of the carbon flux data for the site US-Ses Sevilleta shrubland. This is the FLUXNET version of the carbon flux data for the site US-Ses Sevilleta shrubland produced by applying the standard ONEFlux (1F) software. Site Description - The Sevilleta Desert Shrubland site is located in Larrea-dominated shrubland in the northern Chihuahuan Desert of the Rio Grande Valley, on the Sevilleta National Wildlife Refuge (SNWR). The site is within the McKenzie Flats area of the Sevilleta National Wildlife Refuge (NWR). McKenzie Flats is an extensive (~130 km2), nearly flat, mixed-species desert grassland bounded on the east by Los Pinos Mountains and on the west by the Rio Grande. Historically, this area has been used for livestock grazing; however, the McKenzie Flats have not been grazed since 1973 and the effects of this previous grazing are considered negligible for the purposes of this study. The density of Larrea at this site is 0.9 m-2 , interspersed with C4 perennial grasses (Bouteloua gracilis, B. eriopoda, Sporobolis spp., Hilaria jamesii, Muhlenbergia spp.). Sixty percent of mean annual precipitation comes in isolated, short duration showers during the monsoon season (July – September); the remainder arrives with winter frontal systems, although with considerable year-to-year variation.

本数据集为AmeriFlux管理项目（AmeriFlux Management Project, AMP）生成的US-Ses塞维利塔灌丛地站点FLUXNET-1F版碳通量数据，即采用标准ONEFlux（1F）软件处理得到的该站点FLUXNET版碳通量数据。
站点概况——塞维利塔荒漠灌丛站点坐落于里奥格兰德河谷北部奇瓦瓦荒漠的拉雷阿属（*Larrea*）主导灌丛带，地处塞维利塔国家野生动物保护区（Sevilleta National Wildlife Refuge, SNWR）内，具体位于该保护区的麦肯齐平原区域。麦肯齐平原为一片广袤（约130 km²）、近乎平坦的混物种荒漠草原，东侧以洛斯皮诺斯山脉为界，西侧毗邻里奥格兰德河。历史上该区域曾用于畜牧放牧，但自1973年起麦肯齐平原便不再开展放牧作业，此前放牧活动对本研究的影响可忽略不计。本站点的拉雷阿属植物密度为0.9株·m⁻²，其间散布有C4多年生草本植物，包括格兰马草（*Bouteloua gracilis*）、*B. eriopoda*、鼠尾粟属（*Sporobolis* spp.）、詹姆斯氏山涧草（*Hilaria jamesii*）以及乱子草属（*Muhlenbergia* spp.）。该站点年均降水量的60%集中于季风季（7月至9月）的局地短时阵雨，剩余降水随冬季锋面系统抵达，不过年际波动幅度较大。