---

作 者 ：刘厚田,李一川

期 刊 ：生态学报 1990年 10卷 4期 页码：305~310

关键词：SO2污染；森林衰亡；马尾松；模拟熏气；现场空气过滤实验；

Keywords:SO2 pollution, forest decline, masson pine, simulated fumigation, filtered air experiment in situ.,

摘 要 ：本文运用开顶式熏气装置研究重庆南山大气SO₂污染与马尾松衰亡的关系。通过SO₂模拟熏气试验确定了SO₂对马尾松急性和慢性伤害阈值和可见伤害症状,长期定点SO₂浓度监测结果表明南山马尾松衰亡区的大气SO₂改度超过了马尾松的慢性伤害阈值。SO₂浓度与马尾松衰亡程度的空间分布一致、衰亡中的马尾松针叶上出现的可见症状与SO₂熏气实验中所出现的症状相似。现场空气过滤实验证明SO₂污染是马尾松针叶受害的原因。

Abstract:The relationship between the atmospheric SO₂ pollution and the decline of the masson pine forest located in Nanshan on the south bank of Yangtze River near Chongqing was studied. This work included SO₂ pollution monitoring, SO₂ fumigation, filtered air experiment in situ,and analysis of sulfur content in needles. The results of air monitoring indicated that the SO₂ pollution in this area was heavy, and the SO₂ concentration in air was 0.35 mg/m3 averagely, with maximum 1.30mg/m3. The fumigation tests showed...

---