Cross-CZO -- Topographic Carbon Storage, GIS/Map Data, LiDAR, Land Cover -- Betasso -- (2010-2010)

The 'Stems' data are from an individual tree segmentation (Swetnam and Falk 2014) derived from the 2010 snow-off lidar and biomass-carbon allometric equations. The purpose of the dataset is to evaluate the distribution of aboveground carbon across an elevation gradient in temperature and precipitation.

The '10m Topo points' data are derived from a bare earth digital elevation model (DEM) generated from the 2010 snow-off lidar flight, these include the topographic metrics and the biomass-carbon for each pixel derived from the sum of STEMS. The purpose of the dataset is to evaluate the distribution of aboveground carbon across an elevation gradient in temperature and precipitation.

A total of three catchments in Boulder Creek were analyzed: Como Creek, Gordon Gulch, and Betasso Preserve.

Significance Statement:
Forest carbon reservoirs in complex terrain along an elevation-climate gradient spanning an 11 Celsius range in mean annual temperature (MAT) and a 50 cm yr-1 range in mean annual precipitation (MAP) did not exhibit the expected response of increasing in size with greater MAP and idealized MAT. Within catchments, the distribution of mean and peak carbon storage doubled in size for valleys versus ridges. These results suggest spatial variations in carbon storage relate more to topographically mediated water availability, as well as aspect (energy-balance) and topographic curvature (a proxy for soil depth and depth to ground water), than elevation-climate gradients. Consequently, lateral redistribution of precipitation across topographic position may either moderate or exacerbate regional climatic controls over ecosystem productivity and tree-level responses during drought.

本数据集的'Stems'数据源自Swetnam与Falk（2014年）对单株树木分割的研究，该研究基于2010年雪后激光雷达和生物量-碳同形方程。数据集旨在评估在温度和降水梯度上的地上碳分布。'10m Topo points'数据源自2010年雪后激光雷达飞行生成的裸地数字高程模型（DEM），其中包括由STEMS总和得出的每个像素的地形指标和生物量-碳。数据集的目的在于评估在温度和降水梯度上的地上碳分布。在Boulder Creek的三个流域进行了分析：Como Creek、Gordon Gulch和Betasso Preserve。意义陈述：在复杂地形中，沿海拔-气候梯度分布的森林碳库，其平均年温度（MAT）变化范围为11摄氏度，平均年降水量（MAP）变化范围为50厘米/年，其碳库规模的预期增加响应并未出现。在流域内，与山脊相比，山谷的平均和峰值碳储存量翻倍。这些结果提示，碳储存的空间变异性与地形介导的水资源供应、方位（能量平衡）以及地形曲率（土壤深度和地下水深度的替代指标）的关系更为密切，而非海拔-气候梯度。因此，降水在拓扑位置的横向分配可能既可能缓和也可能加剧区域气候对生态系统生产力和树木层在干旱期间的响应的控制。