Free atmospheric phosphine concentrations and fluxes in different wetland ecosystems, China

被引：32

作者：

Han, Chao ^{[1
]}

Geng, Jinju ^{[1
]}

Hong, Yuning ^{[1
]}

Zhang, Rui ^{[2
]}

Gu, Xueyuan ^{[1
]}

Wang, Xiaorong ^{[1
]}

Gao, Shixiang ^{[1
]}

Glindemann, Dietmar ^{[3
]}

机构：

[1] Nanjing Univ, State Key Lab Pollut Control & Resource Reuse, Sch Environm, Nanjing 210046, Peoples R China

[2] Nanjing Normal Univ, Sch Chem & Environm Sci, Nanjing 210097, Peoples R China

[3] Virginia Tech, Dept Civil & Environm Engn, Blacksburg, VA 24061 USA

来源：

ENVIRONMENTAL POLLUTION | 2011年 / 159卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Phosphine gas; Flux; Atmospheric concentration; Migration; Wetland ecosystems; MATRIX-BOUND PHOSPHINE; NITROUS-OXIDE; N2O EMISSIONS; TAIHU LAKE; PHOSPHORUS; METHANE; SOILS; ENVIRONMENT; SIMULATION; SEDIMENTS;

D O I：

10.1016/j.envpol.2010.09.030

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Atmospheric phosphine (PH3) fluxes from typical types of wetlands and PH3 concentrations in adjacent atmospheric air were measured. The seasonal distribution of PH3 in marsh and paddy fields were observed. Positive PH3 fluxes are significantly related to high air temperature (summer season) and increased vegetation. It is concluded that vegetation speeds up the liberation of PH3 from soils, while water coverage might function as a diffusion barrier from soils or sediments to the atmosphere. The concentrations of atmospheric PH3 (ng m(-3)) above different wetlands decrease in the order of paddy fields (51.8 +/- 3.1) > marsh (46.5 +/- 20.5) > lake (37.0 +/- 22.7) > coastal wetland (1.71 +/- 0.73). Highest atmospheric PH3 levels in marsh are found in summer. In paddy fields, atmospheric PH3 concentrations in flourishing stages are higher than those in slowly growing stages. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：630 / 635

页数：6

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