Yin Hui, Tariq Akash, Zhang Bo, Lv Guanghui, Zeng Fanjiang, Graciano Corina, Santos Mauro, Zhang Zhihao, Wang Peng, Mu Shuyong
State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.
College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China.
Plants (Basel). 2021 Sep 9;10(9):1867. doi: 10.3390/plants10091867.
In this study, Shap. was used to test the hypothesis that leaf economic and hydraulic traits are coupled in plants in a hyper-arid region. Five economic traits and six hydraulic traits were examined to explore the relationship. Results showed that the stomatal density (SD) on both surfaces was coupled with maximum stomatal conductance to water vapor (g) and leaf tissue density (TD). SD on adaxial surface (SD) was significantly positively related to vein density (VD) but negatively related to leaf thickness (LT) and stomatal length on adaxial surface (SL). Nitrogen concentration based on mass (N) was significantly negatively correlated with leaf mass per area (LMA), LT, and VD, whereas nitrogen concentration based on area (N) was significantly positively related to LMA and TD. Mean annual precipitation (MAP) contributed the most to the changes in LT and stomatal length (SL). Soil salt contributed the most to TD, SD, and g. Soli nutrients influenced the most of LMA and VD. Mean annual temperature contributed the most to N and N. In conclusion, the economics of leaves coupled with their hydraulic traits provides an economical and efficient strategy to adapt to the harsh environment in hyper-arid regions.
在本研究中，使用Shap.来检验叶经济性状和水力性状在超干旱地区植物中相互关联的假设。研究考察了五个经济性状和六个水力性状以探究它们之间的关系。结果表明，叶片两面的气孔密度（SD）与最大水蒸气气孔导度（g）和叶组织密度（TD）相互关联。叶片上表皮的气孔密度（SD）与叶脉密度（VD）显著正相关，但与叶片厚度（LT）和上表皮气孔长度（SL）呈负相关。基于质量的氮浓度（N）与单位面积叶质量（LMA）、LT和VD显著负相关，而基于面积的氮浓度（N）与LMA和TD显著正相关。年平均降水量（MAP）对LT和气孔长度（SL）变化的影响最大。土壤盐分对TD、SD和g的影响最大。土壤养分对LMA和VD的影响最大。年平均温度对N和N的影响最大。总之，叶片的经济性状与其水力性状相结合，为适应超干旱地区的恶劣环境提供了一种经济高效的策略。
