RELATIONSHIP OF SOIL PROPERTIES TO STANDING CROP BIOMASS OF SPARTINA-ALTERNIFLORA IN A LOUISIANA MARSH

被引:78
作者
DELAUNE, RD
BURESH, RJ
PATRICK, WH
机构
[1] Center for Wetland Resources, Louisiana State University, Baton Rouge
来源
ESTUARINE AND COASTAL MARINE SCIENCE | 1979年 / 8卷 / 05期
关键词
estuarine sedimentation; Louisiana; nutrients; organic matter; plant nutrition; primary production; salt marshes; soil properties;
D O I
10.1016/0302-3524(79)90063-X
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Chemical and physical properties of salt marsh soils in Barataria Bay, Louisiana were measured and related to total standing crop biomass of Spartina alterniflora Loisel. Marsh sites on the natural levees alongside streams and bays supported taller and denser stands of S. alterniflora than sites inland from the streams. Soil density decreased with increasing distance from the streams and water bodies; it varied from 0·37 to 0·19 g cm-3. Organic carbon ranged from 6 to 16% on a weight basis. Aerial standing crop was positively correlated with soil density and negatively associated with soil carbon content and C N ratio. Neither extractable soil P, K, Mg, Ca, Na, or total soil N expressed on a dry weight soil basis was significantly related to growth of S. alterniflora. However, each of these soil constituents when converted to a soil volume expression (μg cm-3) was positively correlated with plant growth. This correlation was apparently a result of the association of these constituents with the content of mineral matter in the soil. Influx of sediments which helps maintain the marsh elevation presumably supplies the nutrient-rich mineral component in these soils. © 1979.
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页码:477 / 487
页数:11
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