Fluxes project at North Temperate Lakes LTER: Random lake survey 2004

The overarching goal of this project is to understand carbon and nutrient cycles for a landscape on which terrestrial and freshwater systems are intimately connected in multiple and reciprocal ways. In the Northern Highlands region of Wisconsin, they are studying a spatially complex landscape in which water features make up almost half of the land area, with wetlands (27% of land surface) and lakes (13%) both prevalent throughout the region, interspersed in upland forests. Weather and limnological data from a set of 170 lakes in the NHLD samples summer 2004. The sampled lakes were from a random stratified subsample (N=300 of 7588 total) of all the lakes in the NHLD.

本项目的核心目标是解析陆地与淡水生态系统以多重双向互作方式紧密耦合的景观尺度碳循环与养分循环机制。在威斯康星州北部高地区域，研究团队聚焦一处空间结构复杂的景观：该区域水体面积占总陆地面积近一半，湿地（占陆地表面27%）与湖泊（占13%）广泛分布，并穿插于高地森林群落之间。本研究采集了2004年夏季NHLD（National Highlands Lakes Database）采样计划中170处湖泊的气象与湖沼学观测数据。本次采样的湖泊源自NHLD全部7588处湖泊的随机分层子样本（总抽样规模为300处，本次实际完成采样170处）。