文献类型：期刊文献

英文题名：Plant traits regulated metal(loid)s in dominant herbs in an antimony mining area of the karst zone, China

作者：Du, Zhongyu[1] Wang, Shufeng[1] Xing, Wenli[1] Xue, Liang[1] Xiao, Jiang[1] Chen, Guangcai[1]

第一作者：Du, Zhongyu

通信作者：Chen, GC[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China

年份：2024

卷号：14

期号：8

外文期刊名：ECOLOGY AND EVOLUTION

收录：;Scopus(收录号：2-s2.0-85202045057);WOS:【SCI-EXPANDED(收录号:WOS:001296394300001)】；

基金：National Key Research and Development Program of China, Grant/Award Number: 2020YFC1807704

语种：英文

外文关键词：antimony mining; dominant species; ecological restoration; ecological stoichiometry; functional traits; metal(loid)s accumulation

摘要：Understanding how plant functional traits respond to mining activities and impact metal(loid)s accumulation in dominant species is crucial for exploring the driving mechanisms behind plant community succession and predicting the ecological restoration potential of these plants. In this study, we investigated four dominant herbaceous species (Artemisia argyi, Miscanthus sinensis, Ficus tikoua, and Ageratina adenophora) growing on antimony (Sb) mining sites (MS) with high Sb and arsenic (As) levels, as well as non-mining sites (NMS). The aim was to analyze the variations in functional traits and their contribution to Sb and As concentrations in plants. Our results indicate that mining activities enhanced soil nitrogen (N) limitation and phosphorus (P) enrichment, while significantly reducing the plant height of three species, except for F. tikoua. The four species absorbed more calcium (Ca) to ensure higher tolerance to Sb and As levels, which is related to the activation of Ca signaling pathways and defense mechanisms. Furthermore, plant Sb and As concentrations were dependent on soil metal(loid) levels and plant element stoichiometry. Overall, these findings highlight the regulatory role of plant element traits in metal(loid) concentrations, warranting widespread attention and further study in the future. Four dominant species (Artemisia argyi, Miscanthus sinensis, Ficus tikoua, and Ageratina adenophora) were selected to investigate the functional traits variation and their contributions to Sb and As accumulation in high levels of antimony (Sb) and arsenic (As) sites (MS) and the non-mining sites (NMS). Four species absorbed more Ca to ensure their higher tolerance to Sb and As, which is related to the Ca signal conduction startup of the defense mechanism. Plant Sb and As levels were not only dependent on plant height, but also plant N, P, and Ca concentration and stoichiometry. These findings emphasize the influence of mining activities on modifying plant adaptation strategies and highlight the regulation role of plant traits on metal(loid)s accumulation.image