regional community dataset.xlsx

The study covers a large area of natural forests in Northeastern China. This study was conducted in coniferous and broad-leaved mixed temperate forests throughout northeastern China, where stretches across the provinces of Heilongjiang, Jilin, Liaoning, and Inner Mongolia (39°42′48′′ to 53°19′21′′N; 119°48′12′′ to 134°01′01′′E). The region belongs to a temperate continental climate, characterized with long and cold winters and warm summers. The annual average temperature ranged from -5.6°C to 9.8°C across the regional area. The annual average precipitation ranged from 363.8 mm to 1,073.7 mm, with more rainfall concentrated from June to September. The total study area covered approximately 700,000 km2, where the 328 circular field plots with relatively even cover, each measuring 0.1 ha, were used in this study. The altitude of the plots varied between 79 m and 1,255 m. The n nearest plots were selected for each center plot in order to form scaled regional communities with particular center plots. Therefore, every regional community (N) was composed of n + 1 plots. These clusters represented local communities of different sizes, which in turn represented different regional communities in different geographical locations. The effects of biodiversity on the aboveground wood productivity were investigated at three different spatial extents of N = 5, 10, and 15, respectively. Each spatial extent included a total of 328 regional communities distributed within the temperate forest regions. The spatial extents of these regional communities, including 5, 10, and 15 plots, cover an average distance of 51 km, 83 km, and 106 km, respectively. <br>