Grass productivity data from a field site in the Conwy Valley (2016)

Data are presented showing grass productivity as grammes per 100 square centimetres under four different nutrient treatments (water, nitrogen, phosphorus and nitrogen & phosphorus combined). An experimental hillslope in the Conwy catchment was selected in August 2016. Three transects, were identified across the hillslope. Along each transect, a 1 x 1 square metre quadrat was used to delineate randomly selected sampling areas. Within each quadrat 5 individual 10 x 10 x 10 centimetre (cm) swards were collected using a spade and transported to the laboratory in Bangor University for the nutrient addition. Three different harvests at different stages (initial cut, first harvest, second harvest) were conducted in order to measure grass productivity. Harvest included removal of all vegetation within the quadrat down to approximately 1 cm in height. The data were collected to identify the nutrient limitations within the hillslope by trained members of staff from Bangor University and the Centre for Ecology & Hydrology. The data were collected for the NERC project 'The Multi-Scale Response of Water quality, Biodiversity and Carbon Sequestration to Coupled Macronutrient Cycling from Source to Sea' (NE/J011991/1). The project is also referred to as Turf2Surf.

本数据集展示了四种不同养分处理（供水、氮素、磷素及氮磷复合处理）下，以克每100平方厘米为单位的草地生产力数据。2016年8月，研究人员选取康威流域（Conwy catchment）内一处实验坡面，并在该坡面上布设三条样带。沿每条样带，以1×1平方米的样方（quadrat）划定随机选取的采样区域。在每个样方内，研究人员使用铁锹采集5块10×10×10厘米的草皮块，随后将其转运至班戈大学（Bangor University）实验室开展养分添加实验。为测定草地生产力，研究人员在三个不同阶段开展三次刈割采样（初始刈割、第一次收获、第二次收获），每次刈割均移除样方内高度约1厘米以上的所有植被。本数据由班戈大学与英国生态与水文中心（Centre for Ecology & Hydrology）的受训人员采集，旨在明确该坡面内的养分限制因子。数据采集自英国自然环境研究理事会（NERC）项目“从源到海的大量元素耦合循环对水质、生物多样性及碳固存的多尺度响应”（项目编号：NE/J011991/1），该项目亦被称为Turf2Surf。