Above-ground biomass and NDVI for Sensor Node Array, 2017 - ongoing.

Spatial and temporal variability characterizes virtually all
ecosystems, with resource supply changing over the course of growing
season and across years due to climate variation. To better
understand spatial heterogeneity in ecological response across
landscape positions, we established a 16-node sensor array within a
45-hectare catchment landscape that measures temporal variability of
important biogeochemical and hydrological controls on ecosystem
processes. The array was established at the Niwot Saddle catchment
in order to accompany long term water quality and discharge records
taken at the top and bottom of this catchment. The region forms an
important ecological linkage between the terrestrial areas of the
Niwot Ridge LTER and the aquatic component in the Green Lakes
Valley. Over two years (2017 – 2018), above-ground biomass data were
sampled adjacent to each of the 16 sensor nodes to characterize
plant productivity. Beginning in 2023, Normalized Difference
Vegetation Index (NDVI) was measured at each node.

空间与时间变异性是几乎所有生态系统的固有特征，由于气候波动，资源供给会在生长季内及跨年度发生变化。为深入理解不同景观位置生态响应的空间异质性，我们在45公顷的集水区内建立了由16个节点组成的传感器阵列，用于监测生态系统过程中关键生物地球化学和水文控制因子的时间变异性。该阵列部署于Niwot Saddle集水区，旨在配合该集水区上下游已有的长期水质与流量监测记录。该区域是Niwot Ridge长期生态研究站（LTER）陆地区域与Green Lakes Valley水生组分之间的重要生态连接纽带。2017-2018年的两年间，我们在16个传感器节点附近采集了地上生物量数据，以表征植物生产力。自2023年起，每个节点均开展归一化植被指数（Normalized Difference Vegetation Index, NDVI）的监测。