Keywords: land use Substances: 5-Fluorouracil (GHASVSINZRGABV-UHFFFAOYSA-N) 18-beta-Glycyrrhetinic acid (MPDGHEJMBKOTSU-YKLVYJNSSA-N) 5-Fluoro Cytosine (XRECTZIEBJDKEO-UHFFFAOYSA-N) Acemetacin (FSQKKOOTNAMONP-UHFFFAOYSA-N)