Dataset for DOM recalcitrance and its ecological processes using MLB, Ibio and Iphoto indices

This dataset includes geographic, climatic, physicochemical, microbial, molecular and ecological index data from 63 freshwater lakes across China. These lakes were distributed along a broad spatial gradient (18°48′– 49°34′ N, 102°51′–129°36′ E), covering diverse climatic conditions with mean annual temperature (MAT, 2.85–25.65°C) and mean annual precipitation (MAP, 175–362 mm). The sampled lakes fall into five climatic zones: mid-temperate semi-humid, mid-temperate semi-arid, warm-temperate semi-humid, subtropical humid, and tropical humid zones.