Spatial variability of throughfall in a subtropical rain forest in Taiwan

Teng Chiu Lin*, Steven P. Hamburg, Hen Biau King, Yue Joe Hsia

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

41 引文 斯高帕斯(Scopus)

摘要

Eight rainfalls were intensively sampled in a subtropical rain forest in northeastern Taiwan. This study, carried out at Fu-shan Experimental Forest was designed to examine variability of throughfall characteristics. The volume and chemistry of the throughfall associated with individual rains have a high degree of spatial variability, with throughfall chemistry more variable than volume. When data from all of the storms were combined, there was lower variability than that seen with individual storms, largely as a result of a lack of consistent storm to storm spatial variation. Thus, individual storms cannot be used to represent the seasonal or annual pattern of spatial variation in throughfall chemistry or volume of the study forest. Twenty samples were required to estimate throughfall volume within 10% of the population mean with 95% confidence for individual storms. Yet, more than 100 samples were required to estimate the throughfall chemistry of some ions (e.g., H+). When the data from all eight storms were combined, 7, 20, and 25 samples were necessary to estimate throughfall volume, ion concentrations, and ion fluxes (except for Mg2+ and H+) within 10% of the population mean with 95% confidence. In the absence of estimates of spatial variation, differences in sampling protocols among throughfall studies make comparisons of throughfall characteristics difficult. In this study three funnels were used in tandem to capture small scale variability at each sample location, thus reducing spatial variability of throughfall chemistry.

原文英語
頁(從 - 到)172-180
頁數9
期刊Journal of Environmental Quality
26
發行號1
DOIs
出版狀態已發佈 - 1997

ASJC Scopus subject areas

  • 環境工程
  • 水科學與技術
  • 廢物管理和處置
  • 污染
  • 管理、監督、政策法律

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