Influences of topography on nitrate export from forested watersheds on Yakushima Island, a Natural World Heritage site.

ABSTRACT: In East Asia, high levels of atmospheric nitrogen are deposited onto land. This could elevate the nitrate levels in coastal waters via river runoff, even from areas where anthropogenic sources are minimal. It is important to identify NO₃ ^- sources in river water and the mechanisms involved in NO₃ ^- runoff. Yakushima Island, Japan, is a Natural World Heritage site featuring numerous watersheds with diverse topography and rivers. The area receives significant precipitation, with up to 10 000 mm in mountainous regions. Its proximity to coastal urban areas in China (∼800 km) leads to substantial atmospheric nitrogen wet and dry deposition in the island's forests. The study aimed to clarify regional water quality characteristics by conducting l

SUBMITTER: Shinozuka K 

PROVIDER: S-EPMC11411419 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature