Effect of plant composition on nitrogen cycling in California grasslands: plant biomass data

In the fall of 2000, we set up replicated (n=4) plantings of 25 of the most common species on Sedgwick Reserve (1 m^2). We selected species from 6 groupings: native perennial grasses, exotic perennial grasses, native annual grasses, exotic annual grasses, native forbs, and exotic forbs. In the spring of 2003, we collected a wide range of data from each monoculture including plant biomass, seed production, root distribution, and data on c and n cycling.

2000年秋季，我们在塞奇威克保护区（Sedgwick Reserve）开展了25种常见植物的重复种植实验，每个物种设置4次生物学重复（n=4），单一种植单元面积为1平方米。供试物种选自6个功能类群：本土多年生草本植物、外来多年生草本植物、本土一年生草本植物、外来一年生草本植物、本土非禾本科草本植物（forbs）以及外来非禾本科草本植物（forbs）。2003年春季，我们从每个单作样方中采集了多类观测数据，涵盖植物生物量、种子产量、根系分布以及碳（C）、氮（N）循环相关数据。