Effects of vegetation restoration and environmental factors on understory vascular plants in a typical karst ecosystem in southern China.

Scientific Reports
Zhiyang OuWenhui Shen

Abstract

Understory vegetation is an important component in most forest ecosystems. It is very important for soil and water conservation in karst region, study on understory will provide valuable information for understanding the interaction mechanism between understory flora and karst environment. Thirty-two plots were sampled in three vegetation types along with a restoration gradient (shrubland, forest-shrub transition, and mixed-species broadleaf forest) in typical karst mountains in Southwest Guangxi, China. Overstory trees, understory vascular plants, soil nutrients, and topographic factors were recorded in each 400-m2 plot. Multivariate statistics were used, including the multi-response permutation procedure (MRPP), indicator species analysis, and canonical correlation analysis (CCA). MRPP showed understory species composition significantly differed among the three vegetation types, with the greatest difference between the shrubland and the mixed forest. Twenty-one understory species were identified as significant indicator species, with 13 species being identified as indicators of the shrubland, two of forest-shrub transition, and six of the mixed forest. Light-demanding herbaceous seed plants were common in shrubland, while sha...Continue Reading

References

Feb 1, 1992·Ecological Applications : a Publication of the Ecological Society of America·Gregg M RiegelWilliam C Krueger

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