大气酸沉降对马尾松幼苗根系生理特性的影响 |
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引用本文: | 周思婕,王平,张敏,陈舒展,许雯,朱丽婷,何销勤,龚书锐. 大气酸沉降对马尾松幼苗根系生理特性的影响[J]. 南京林业大学学报(自然科学版), 2020, 44(4): 111-118. DOI: 10.3969/j.issn.1000-2006.201907002 |
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作者姓名: | 周思婕 王平 张敏 陈舒展 许雯 朱丽婷 何销勤 龚书锐 |
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作者单位: | 南京林业大学生物与环境学院,江苏 南京 210037;南京林业大学生物与环境学院,江苏 南京 210037;南京林业大学生物与环境学院,江苏 南京 210037;南京林业大学生物与环境学院,江苏 南京 210037;南京林业大学生物与环境学院,江苏 南京 210037;南京林业大学生物与环境学院,江苏 南京 210037;南京林业大学生物与环境学院,江苏 南京 210037;南京林业大学生物与环境学院,江苏 南京 210037 |
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基金项目: | 国家自然科学基金项目(30771696) |
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摘 要: | 目的马尾松 (Pinus massoniana) 是我国人工林的重要组成树种,对酸沉降高度敏感。随着我国大气酸沉降的日趋严重,马尾松林出现针尖坏死,树枝枯萎,甚至死亡等受害症状。木本植物响应酸沉降根系生理变化过程的研究相对较少,酸沉降对马尾松根系生理特性的影响仍不清楚。笔者研究马尾松幼苗根系生理指标在不同酸沉降强度和时间下的变化,探究马尾松根系对大气酸沉降的适应能力。
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关 键 词: | 酸沉降污染 马尾松幼苗 根系生理特性 有机酸分泌 根际土壤 根系活力 |
收稿时间: | 2019-07-01 |
Effects of atmospheric acid deposition on root physiological characteristics of Pinus massoniana seedlings |
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Abstract: | ObjectivePinus massoniana is an important plantation species in China, it is highly sensitive to acid deposition. As atmospheric acid deposition has increased, symptoms of injury, such as needle tip necrosis, branch withering, and even death, have been observed in P. massoniana forests. However, there are relatively few studies assessing changes in root physiological processes in forest woody plants in response to acid deposition. Moreover, the effects of acid deposition on the physiological characteristics of P. massoniana roots are still unknown. We focused on the changes in root physiological parameters of P. massoniana seedlings exposed to simulated acid rain (with different acidity levels and treatment times) and studied the adaptability of the speciesto atmospheric acid deposition. |
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Keywords: | acid deposition contamination Pinus massoniana (masson pine) seedling root physiological characteristic organic acid secretion rhizospheric soil root activity |
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