典型文献
Petroleum-contaminated soil extent recorded by δ15N and δ13C of plants and soils
文献摘要：
Petroleum contamination in terrestrial environments caused by industrial activities is a significant problem that has received considerable attention. Carbon and nitrogen isotopic compositions (δ13C and δ15N) effectively describe the be-havior of plants and soils under petroleum contamination stress. To better understand plant and soil responses to petroleum-contaminated soil, δ13C and δ15N values of the plants (Trifolium repens, Leguminosae with C3 photosynthesis pathway, and Agropyron cristatum with C4 photosynthesis pathway) and the soil samples under one-month exposure to different extents of petroleum contamination were measured. The results showed that petroleum contamination in the soil induced the soilδ15N values to increase and δ13C values to decrease; from 1.9‰ to 3.2‰ and from ?23.6‰ to ?26.8‰, respectively. However, the δ13C values of Agropyron cristatum decreased from ?29.8‰ to ?31.6‰, and the δ13C values of Trifolium re-pens remained relatively stable from ?12.6‰ to ?13.1‰, indicating that they have different coping strategies under petro-leum-contaminated soil conditions. Moreover, the δ15N values of Trifolium repens decreased from 5.6‰ to 0.8‰ near the air δ15N values under petroleum-contaminated soil, which implies that their nitrogen fixation system works to reduce soil petroleum stress. The δ13C and δ15N values of Agropyron cristatum and Trifolium repens reflect changes in the metabolic system when they confront stressful environments. Therefore, stable isotopic compositions are useful proxies for monitor-ing petroleum-contaminated soil and evaluating the response of plants to petroleum contamination stress.
文献关键词：
中图分类号：
作者姓名：
Zhoufeng Wang;Ruijuan Hao;Juan Wang;Yuanyuan Shen;Xiangzhong Li
作者机构：
Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region,Ministry of Education,School of Water and Environment,Chang'an University,Xi'an 710054,China;School of Biological and Environmental Engineering,Xi'an University,Xi'an 710065,China;Environmental Monitoring Station of Lanshan Branch,Rizhao Bureau of Ecology and Environment,Rizhao 276800,China;Yunnan Key Laboratory of Earth System Science,Yunnan University,Kunming 650500,China
文献出处：
引用格式：
[1]Zhoufeng Wang;Ruijuan Hao;Juan Wang;Yuanyuan Shen;Xiangzhong Li-.Petroleum-contaminated soil extent recorded by δ15N and δ13C of plants and soils)[J].中国科学技术大学学报,2022(05):52-60
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AB值：
0.423594
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