2026-10-14T21:40:32Z https://www.scidb.cn/oai

10.57760/sciencedb.013ge 2026-09-28T11:32:42Z

2026-09-28 N–P–K stoichiometry dataset of three aboveground organs of five Calligonum species in a common garden at Turpan (September 2021) doi:10.57760/sciencedb.013ge en This dataset is based on field sampling and laboratory nutrient analyses conducted in September 2021 at the Turpan Desert Botanical Garden, Chinese Academy of Sciences (89°11′ E, 40°19′ N; elevation −105 to −76 m), covering nitrogen (N), phosphorus (P), and potassium (K) concentrations and stoichiometric characteristics of three aboveground organs of five Calligonum species under common-garden conditions. Five species were sampled: C. caput-medusae, C. arborescens, C. rubicundum, C. klementzii, and C. junceum. For each species, six individuals of similar growth status were selected, and three branch types (assimilative branches, current-year branches, and mature branches) were collected. Samples were oven-dried at 105 °C for 30 min and then at 65 °C to constant weight; total N was determined by the Kjeldahl method, and P and K by wet digestion with perchloric acid, expressed in mg·g⁻¹ dry mass. The dataset contains 90 records (5 species × 3 organs × 6 individuals), including species, organ, individual number, N, P, K concentrations, and N:P, N:K, P:K mass ratios. It supports research on organ differentiation, ecological stoichiometry, allometry, nutrient allocation strategies, and ecological adaptation of desert shrubs. Calligonum; organ differentiation; ecological stoichiometry; nutrient allocation; common garden Xu Yiheng Wang Mengting Jin Xinyue Wang Xiyong Song Zijuan Sun Tingzhe to cultivate PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank