生态学杂志2001，Vol.20Issue(1)：9-12,4.
酸沉降影响下庐山森林生态系统土壤硫形态分布研究
Sulfur Fractions in Typic Udalfs in Forest Ecosystem in Mt. Lushan as Affected by Acid Deposition.
石盛莉 1潘根兴 1王连峰 1张乐华 2黄明星2
作者信息
- 1. 南京农业大学资源环境科学学院 农业资源与生态环境研究所,
- 2. 中国科学院庐山植物园,
- 折叠
摘要
Abstract
Acid deposition has been a severe environmental pollution problem in Mt. Lushan since early 1980, Soil acidification trends have been resultantly obvious. Pedons of the Typic Udalfs both under deciduous and coniferous forest with and without root-growing effects were sampled. Soil sulfur was fractionated by selective extraction methods and the sulfur in solutions was determined by BaSO4 turbidimetry. The results showed the total S in surface layers amounted to 400-800mg*kg-1, indicating a high net accumulation of S under impacts of the acid deposition. The sulfur in the soils were predominated by adsorbed sulfur(160.0±72.1mg*kg-1) and organic sulfur(123.3±142.9 mg*kg-1), with the former accumulating to deep profile and the latter in surface 0-30 cm depth. Under deciduous soil sulfur accumulated to deep profile. Adsorbed sulfur under coniferous was higher (152.72 mg*kg-1) than which under deciduous (121.85 mg*kg-1), while the latter contained more water sulfur, indicating sulfur under deciduous inclined to move. Soils with root-growing effects contained more total sulfur (351.15 mg*kg-1) than soil without root-growing effects (300.50 mg*kg-1), high organic sulfur accumulated in soils in root-growing depth, but no significant profile difference under deciduous. Therefore, the sulfur transform was involved in accumulation of sulfur affected by acid deposition.关键词
酸沉降/庐山/森林生态系统/土壤/硫/形态/分布分类
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石盛莉,潘根兴,王连峰,张乐华,黄明星..酸沉降影响下庐山森林生态系统土壤硫形态分布研究[J].生态学杂志,2001,20(1):9-12,4.
