干旱风沙区煤炭基地12种草本植物对干旱胁迫的生理生态响应及抗旱性评价
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为筛选适宜于西北干旱风沙区煤炭基地植被恢复建设需要的草本植物,以二色补血草、蒙古冰草、沙生冰草、沙打旺、草木樨、白三叶、苜蓿、甘草、沙蒿、碱蓬、蜀葵、沙米为试验材料,采用盆栽控制土壤水分的方法,研究了土壤自然渐进干旱胁迫下12种草本植物功能性状、光合特性及抗氧化保护酶的变化,并基于主成分分析与隶属函数值相结合的方法,对其抗旱性进行综合评价。
To screen herbaceous plant species suitable for vegetation restoration in coal mining bases located in the arid and sandy regions of Northwest China, twelve herbaceous species including Limonium bicolor, Agropyron mongolicum, Agropyron desertorum, Astragalus adsurgens, Melilotus officinalis, Trifolium repens, Medicago sativa, Glycyrrhiza uralensis, Artemisia desertorum, Suaeda glauca, Alcea rosea, and Agriophyllum squarrosum were selected as experimental materials. A pot experiment with controlled soil moisture was conducted to investigate the variations in functional traits, photosynthetic characteristics, and antioxidant defense enzymes of these species under naturally progressive soil drought stress. Additionally, a comprehensive evaluation of their drought resistance was performed using a combined approach of principal component analysis (PCA) and membership function values.



