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Zeng, Xiaoyang
Šumarski list (1945), 10/2018, Volume: 142, Issue: 9-10Journal Article
U ovom se radu istražuju učinci različitih intenziteta turističke djelatnosti na aktivnost ugljika, dušika i enzima u tlu u suptropskom urbanom parku u Kini. Udjel organskog ugljika tla (SOC), ukupnog ili totalnog ugljika (TN), otopljenog organskog ugljika (DOC), otopljenog organskog ugljika (DON), nitratni oblik dušika (NO3-–N) i amonijski oblik dušika (NH4+–N). SOC, TN, DOC, NO3-–N i NH4+–N u tlu značajno je reduciran kao posljedica turističkih djelatnosti. Aktivnost pojedinih enzima, uključujući sukrazu, katalazu, ureazu i hitinazu, također je reducirana. S iznimkom NH4+-N, svi indikatori ugljika-dušika u tlu pokazali su pozitivnu korelaciju s aktivnosti četiri enzima u tlu. Rezultati ukazuju da turistička djelatnost dovodi do degradacije tla u suptropskom urbanom parku te da je tlo u oštećenim područjima potrebno često preokretati i dodavati više organskih gnojiva. This study investigated the effects of different tourism disturbance intensities on carbon, nitrogen, and enzyme activities of soil in a subtropical urban park, China. The contents of the soil organic carbon (SOC), total nitrogen (TN), dissolved organic carbon (DOC), dissolved organic nitrogen (DON), nitrate nitrogen (NO3-–N), and ammonium nitrogen (NH4+–N) in the soil were significantly reduced by tourism disturbance. The activities of some soil enzymes, including sucrase, catalase, urease, and chitinase, were also reduced. Except for NH4+–N, the soil carbon–nitrogen indicators all exhibited significant positive correlations with the four soil enzyme activities. The results indicated that tourism disturbance caused soil degradation in the subtropical urban park. Therefore, the soil in damaged areas should be frequently turned up, and more organic fertilizers should be added.
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