DIFFERENCES IN O-18 CONTENT OF THROUGHFALL AND RAINFALL IN HARDWOOD AND CONIFEROUS FORESTS

被引：65

作者：

DEWALLE, DR ^{[1
]}

SWISTOCK, BR ^{[1
]}

机构：

[1] PENN STATE UNIV,SCH FOREST RESOURCES,132 LAND & WATER RES BLDG,UNIV PK,PA 16802

来源：

HYDROLOGICAL PROCESSES | 1994年 / 8卷 / 01期

关键词：

O-18; THROUGHFALL; RAINFALL; FRACTIONATION; ENRICHMENT; CANOPY STORAGE;

D O I：

10.1002/hyp.3360080106

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

The differences between deltaO-18 in throughfall and open rainfall were studied for 16 selected spring and summer storms in deciduous, pine and spruce forests in central Pennsylvania, USA. Throughfall deltaO-18 averaged 0.17, 0.32 and 0.24 parts per thousand greater than deltaO-18 of open rainfall for all storms at the deciduous, pine and spruce sites, respectively. Throughfall O-18 enrichment was greater in low intensity spring rainfall events than higher intensity growing season storms and greater in the coniferous stands than the deciduous hardwood stand. Maximum throughfall O-18 enrichment of 1.61 parts per thousand occurred in the spruce forest during one spring event. The differences between rainfall and throughfall O-18 observed in this study for individual storm events may have important implications for isotope flow separation studies.

引用

页码：75 / 82

页数：8

共 11 条

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