Dataset of soil P fractions, PCGs abundances, P cycling processes abundance, and soil properties

The warming-by-precipitation experiment was established in May 2015 at the Alpine Research Station (33°59’N, 102°00’E, ca. 3538 m above sea level) in the eastern Gannan Autonomous Prefecture, Gansu Province, China.A two-factor full factorial interaction manipulation experiment was designed with a randomized block design, including two levels of atmospheric temperature (ambient temperature [T⁰] and warming [T⁺]) and three levels of precipitation (ambient precipitation [nP], 30% precipitation reduction [-P], and 30% precipitation increase [+P]), totally resulting in six treatment combinations. Specifically, six treatments were conducted, including (1) T⁰-P, (2) T⁺-P, (3) T⁰nP, (4) T⁺nP, (5) T⁰+P, and (6) T⁺+P. Each treatment was replicated in four fields (four plots, each 4 m × 4 m). The plots within each block were separated by access paths that were 1.5 m wide, while the distance between adjacent blocks was 5 m.

本增温-降水交互控制实验于2015年5月在中国甘肃省甘南藏族自治州东部的高山研究站（北纬33°59′，东经102°00′，海拔约3538米）建立。本实验采用随机区组设计的双因素完全析因交互操控方案，设置大气温度两个水平：对照温度（ambient temperature，标记为T⁰）与增温处理（标记为T⁺）；降水三个水平：自然降水（ambient precipitation，标记为nP）、30%减水处理（标记为-P）与30%增水处理（标记为+P），共计6种处理组合。具体而言，共设置6组处理，分别为(1) T⁰-P、(2) T⁺-P、(3) T⁰nP、(4) T⁺nP、(5) T⁰+P、(6) T⁺+P。每种处理设置4个重复样地，单个样地面积为4 m × 4 m。每个区组内的小区之间以1.5米宽的步道分隔，相邻区组之间的间距为5米。