Data and code for "Abiotic and biotic factors jointly shape distributions of N-fixing plants in Chinese grasslands"

Data and code for "Abiotic and biotic factors jointly shape distributions of N-fixing plants in Chinese grasslands";READMERio4_biomass N-fixing plant biomass%, the biomass of N-fixing plants as proportions of total biomass %LON Longitude °ELAT Latitude °NALT Altitude mMAT Mean annual temperature °CMAP Mean annual precipitation mmSoil_PC1 the The first principal component of the measured soil fertility (i.e., soil ammonium, nitrate N, total carbon, N and phosphorus, water content, pH)CWMDiff Hm The directional differences in maximum adult height between N-fixing and non-fixing plants cmCWMDiff LA The directional differences in leaf area between N-fixing and non-fixing plants cm2CWMDist Hm The absolute distances in maximum adult height and leaf area between N-fixing and non-fixing plants cmCWMDist LA The absolute distances in leaf area between N-fixing and non-fixing plants cm2

本数据集与代码配套于论文《非生物与生物因子共同塑造中国草地固氮植物分布》（Abiotic and biotic factors jointly shape distributions of N-fixing plants in Chinese grasslands）；以下为该数据集README文档中的各变量说明：
1. Rio4_biomass：固氮植物生物量占比（%），即固氮植物生物量占总生物量的百分比
2. LON：经度（Longitude），单位为东经（°E）
3. LAT：纬度（Latitude），单位为北纬（°N）
4. ALT：海拔（Altitude），单位为米（m）
5. MAT：年平均气温（Mean annual temperature），单位为摄氏度（°C）
6. MAP：年平均降水量（Mean annual precipitation），单位为毫米（mm）
7. Soil_PC1：实测土壤肥力的第一主成分，涵盖土壤铵态氮、硝态氮、总碳、总氮、总磷、土壤含水量及pH值
8. CWMDiff Hm：固氮植物与非固氮植物的最大成株高度方向差异，单位为厘米（cm）
9. CWMDiff LA：固氮植物与非固氮植物的叶面积方向差异，单位为平方厘米（cm²）
10. CWMDist Hm：固氮植物与非固氮植物的最大成株高度及叶面积的绝对差异，单位为厘米（cm）
11. CWMDist LA：固氮植物与非固氮植物的叶面积绝对差异，单位为平方厘米（cm²）