The China Plant Trait Database Version 2.0

Here we present version 2.0 of the China Plant Trait Database, which contains information on morphometric, physical, chemical, photosynthetic and hydraulic traits from 1529 unique species in 140 sites spanning a diversity of vegetation types. Version 2 has five improvements compared to the previous version: (1) new data from a 4-km elevation transect on the edge of Tibetan Plateau, including alpine vegetation types not sampled previously; (2) inclusion of traits related to hydraulic processes, including specific sapwood conductance, the area ratio of sapwood to leaf, wood density and leaf turgor loss point; (3) inclusion of information on soil properties to complement the existing data on climate and vegetation (4) assessments of the reliability of individual trait measurements; and (5) inclusion of standardized checklists and templates for systematical field sampling and measurements. See detailed descriptions here: Wang, H., Harrison, S.P., Li, M. <em>et al.</em> The China plant trait database version 2. <em>Sci Data</em> <strong>9</strong>, 769 (2022). https://doi.org/10.1038/s41597-022-01884-4<br>

本研究发布中国植物性状数据库（China Plant Trait Database）2.0版本，该数据集收录了覆盖140个样地、1529个互不重复的物种的形态计量、物理、化学、光合及水力性状信息，样地范围涵盖多种植被类型。相较于前代版本，本版本共包含五项改进：
1. 新增青藏高原边缘4千米海拔样带的调查数据，包含此前未被采样的高寒植被类型；
2. 纳入与水力过程相关的性状指标，具体包括边材比导水率、边材-叶面积比、木材密度及叶片膨压丧失点；
3. 补充土壤属性信息，以完善现有气候与植被数据集；
4. 对单个性状测量结果的可靠性进行了评估；
5. 新增用于系统野外采样与测量的标准化清单及模板。

详细内容参见：Wang H, Harrison S P, Li M 等. 中国植物性状数据库第2版[J]. 《科学数据（Sci Data）》, 2022, 9: 769. https://doi.org/10.1038/s41597-022-01884-4