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Influence of tourism disturbance on carbon, nitrogen, and enzyme activities of the soil in an urban park in China Utjecaj turizma na aktivnost ugljika, dušika i enzima u tlu u urbanom parku u Kini Xiaoyang Zeng Summary 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. Key words: tourism disturbance, subtropical urban park, soil carbon and carbon, enzyme activity INTRODUCTION UVOD People enjoy spending time in urban parks, especially those with abundant vegetation. Such locations are relaxing and enjoyable. However, frequent visitation can negatively impact the local area by harming the ecological environment of the park. It can lead to destroyed vegetation and increased soil hardness. Naturally, as urbanization and tourism continue to grow, the environmental effects of tourism have become increasingly obvious. As a result, society is paying more attention to these issues, and it has become a hot topic in current ecological tourism research (Sun et al., 2014; Svajda et al., 2016). An important component of ecological tourism research is investigating the effect of tourism on soil. Such research first began in the 1960s and has primarily concentrated on the effects of different trampling intensities and trampling types on soil organic matter, soil physical properties, and plant diversity (Deluca et al., 1998; Lu et al., 2011; Svajda et al., 2016; Wen et al., 2016). Nonetheless, only a few reports are available on the influence of tourism activities on soil biological properties (Gong et al., 2009; Li et al., 2015). This study aimed to investigate the influence |