XU Yinyao1, SUN Hu1,2, CUI Xujia1, LIU Yuexing1, WANG Huize1
（1.College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi’an 710119, China;
2.National Demonstration Center for Experimental Geography Education (Shaanxi Normal University), Xi’an 710119, China）
Abstract: Vegetation restoration is one of the effective methods to recover ecosystem for coal mine. Based on the sample plot and soil sampling, we researched restored vegetation in Daliuta coal mine of windy desert area, north of the Shaanxi Province, China. The species and diversity of different artificial vegetation of Daliuta coal mine were also investigated. Furthermore, the relationship between soil factors and distribution of restored vegetation was explored by canonical correspondence analysis (CCA). Results show that (1) In Daliuta coal mine, 21 kinds of vegetation were discovered which belong to 11 families and 20 genera. The dominant species is herbaceous vegetation, of which Fabaceae, Asteracae and Chenopodiaceae plants accounting for 47.63% of the total numbers of vegetation, respectively. And the mount of perennial herbs is 52.38% of the total vegetation. (2) Calculating for species diversity of different restored vegetation, we found that, in Daliuta coal mine, the changes of Simpon index, Shannon-Wiener index and Pielou evenness index are in the order of grassland>shrub>forest. However, the tendency of Simpon dominance index is in the order as forest>shrub>grassland. From the richness index, diversity index, evenness index and dominance index, the highest one in species diversity is grassland, followed by shrub, and forest is the lowest one among the three types of restored vegetation. (3) From the CCA analysis, the main soil factors restrict the distribution of vegetation are soil organic matter and soil coarse sand content of Daliuta coal mine. In addition, the distribution pattern of herb is closely related to the content of silt and clay of soil at depth of 0~20cm. And soil moisture at depth of 40~60cm has a strictly influence on the distribution of arbor and shrub.
Key words: coal mine; artificial vegetation; soil property; CCA; windy desert area
EARTH AND ENVIRONMENT Vol.46, No.1, Tot No.321, 2018, Page 82-88
