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Open AccessArticle

Mechanisms of Forest Restoration in Landslide Treatment Areas

1
Department of Water Resources Engineering and Conservation, Feng Chia University, Taichung 407, Taiwan
2
Department of Horticulture, National Chung Hsing University, Taichung 402, Taiwan
3
Department of Soil and Water Conservation, National Chung Hsing University, Taichung 402, Taiwan
*
Author to whom correspondence should be addressed.
Sustainability 2014, 6(10), 6766-6780; https://doi.org/10.3390/su6106766
Received: 21 April 2014 / Revised: 12 September 2014 / Accepted: 15 September 2014 / Published: 29 September 2014
(This article belongs to the Special Issue Sustainable Land Use and Ecosystem Management)
Reforestation after a landslide facilitates competition between herbaceous plants and arborous plants. Tangible variations in grassland areas in regions susceptible to landslides can only be found within collections of trees. A landslide area in the Sule Watershed was investigated. Relative illuminance results reveal that the Rhodes grass (Chloris gayana Kunth) biomass in this landslide area increases with relative illuminance. A comparison of regions with tree islands indicates that the size of the grassland areas decreased and the number of tree islands increased during 2005–2010. Furthermore, a germination experiment in a soil-seed bank indicates that more woody plant species exist around the tree island than in other areas in the landslide region. Trees in a tree island change the micro-climate of the landslide region, and they gather as many nutrients and as much moisture as possible, enabling vegetation to expand around the tree island. Additionally, the area with Rhodes grass and its biomass declined annually in the tree island region. Investigation results show that tree islands and soil-seed banks are suited to reforestation in landslide regions. The pioneering research will assist regional landslide management in Taiwan. View Full-Text
Keywords: tree island; herbaceous plants; reforestation; landslide; Rhodes grass tree island; herbaceous plants; reforestation; landslide; Rhodes grass
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Chen, Y.-C.; Wu, C.-F.; Lin, S.-H. Mechanisms of Forest Restoration in Landslide Treatment Areas. Sustainability 2014, 6, 6766-6780.

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