Journal of Pure and Applied MicrobiologyVol. 8 No. May 2014 Special Edition

Soil Nematode Community Structure as Affected by Tourism Trampling in Wudalianchi Scenic in Northeast China

Li-Mei Zhang1,2, Xue-Ping Zhang1 and Li-Min Zhang1*

1Key Laboratory of Remote Sensing Monitoring of Geographic Environment, College of Heilongjiang Province, Harbin Normal University, Harbin - 150025, China. 2School of History, Culture and Tourism, Heilongjiang University, Harbin - 150080, China.

Received on 12 April 2014 and accepted on 09 May 2014

 

ABSTRACT

The effect of human trampling on soil nematode community were studied along an increasing distance from the trail of Wudalianchi World Geo-park which is located in Northeast China. It can provide valuable information about the impacts of human disturbances on ecosystem structure. Our study evaluated the abundance, the composition and the ecological indicators of soil nematode communities in three different trampling intensity (severely disturbance, moderately disturbance, slightly disturbance). Soil samples were collected from the depth of 0 cm to 20 cm in 2013. Soil nematode were separated using the Baermann?s funnels method, and were identified and counted. Soil pH value, soil moisture, soil?bulk density, organic matter, total nitrogen, total phosphorus, available phosphorus content, and available potassium content were measured in topsoil (0-20 cm) from each site. Sixty-one nematode genera were collected during this study. Trampling decreased the abundance of the total nematode and four tropic groups, and affected the frequency of occurrence of some species. Canonical correspondence analysis (CCA) indicated that the soil nematode trophic group distribution related to soil properties closely. Tramping increased soil bulk density, reduced soil moisture content, and decreased soil nutrient supply. Therefore, it lead to changes of soil nematode community. The severely trampling site had the lowest the abundance MI 2-5, EI and SI, and the highest BI and CI, which indicates a serious interference to the environment. Our results show human traffic can affect soil biota significantly in this ecosystem and may alter ecosystem processes. Consequently, soil nematode community analysis may provide useful information for assessing the impact of human foot traffic on soil processes.

Keywords : Tourism disturbance, Nematodes, Ecological functions, Community structure.