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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

Atmospheric particulate matter accumulation on trees: A comparison of boles, branches and leaves  [2019]

Xu, Xiaowu; Yu, Xinxiao; Mo, Li; Xu, Yansen; et al.

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A quantitative comparative analysis of PM accumulation on boles, branches and leaves is necessary to better understand the reduction of airborne PM by trees. This study compared the total water-insoluble particle accumulation mass per unit area, the distribution of water-insoluble particle size fractions, and the accumulation masses and compositions of water-soluble ions among different vegetative organs. The average accumulation capacity of water-insoluble particles was as follows: leaf epicuticular wax (11.1 ± 4.4 μg/cm2), leaf surfaces (22.0 ± 3.2 μg/cm2), terminal branch surfaces (101.6 ± 47.0 μg/cm2), perennial branch surfaces (92.7 ± 20.0 μg/cm2), and bark surfaces (1719.9 ± 684.7 μg/cm2). Bole bark surfaces tended to accumulate the largest proportion of large particles, averaging 88 ± 4%. Branch surfaces and leaf epicuticular wax accumulated the largest proportions of fine particles, averaging 15 ± 5%. The total masses of water-soluble ions were 18 ± 10%, 33 ± 13% and 32 ± 6% of the total water-insoluble particles on boles, terminal branches and leaves, respectively. Leaf surfaces accumulated 2.2–6.0 times more SO2- 4 and NO 3 than did branch and bark surfaces.
From the journal
Journal of cleaner production
ISSN : 0959-6526

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2019
Volume:
226
Issue:
1
Extent:
349-356
Publisher:
Elsevier Ltd
All titles:
"Atmospheric particulate matter accumulation on trees: A comparison of boles, branches and leaves"@eng
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2019
Volume:
226
Issue:
1
Extent:
349-356
Publisher:
Elsevier Ltd
All titles:
"Atmospheric particulate matter accumulation on trees: A comparison of boles, branches and leaves"@eng