|Plant Diversity 2017, 39(03) 140-148 DOI: http://dx.doi.org/10.1016/j.pld.2017.04.003 ISSN: 2096-2703 CN: 53-1233|
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Current re-vegetation patterns and restoration issues in degraded geological phosphorus-rich mountain areas: A synthetic analysis of Central Yunnan, SW China
Kai Yan a, *, Sailesh Ranjitkar a, b, Deli Zhai a, Yunju Li c, Jianchu Xu a, b, Bo Li d, Yang Lu a
a Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
China has the largest area of inland geological phosphorus-rich (GPR) mountains in the world, where vegetation restoration is key to safeguarding the environment. We reviewed the published literature and collected new data in order to analyze re-vegetation patterns and the status of plant communities in central Yunnan. The aim of our analysis was to suggest future improvements to restoration strategies in GPR mountain regions. Our results showed that spontaneous recovery was the most widespread type of restoration. N-fixing species such as Coriaria nepalensis and Alnus nepalensis play a vital role in succession. In the past, monoculture tree plantation was the primary method used in afforestation activities in central Yunnan; in recent years however, several different methods of restoration have been introduced including the use of agroforestry systems. For practical restoration, we found that spontaneous recovery was capable of delivering the best results, but that during its early stages, restoration results were affected by several factors including erosion risk, the origin of propagates and environmental variation. In contrast, methods employing human-made communities performed better in their early stages, but were constrained by higher costs and vulnerability to degradation and erosion. The use of N-fixing species such as A. nepalensis and Acacia mearnsii in plantations were unsuccessful in restoring full ecosystem functions. The success of restoration activities in GPR mountain regions could be improved through the following measures: (1) developing a better understanding of the respective advantages and disadvantages
|Keywords： Systematic review Dianchi Lake Fuxian Lake Natural restoration Human engineered restoration Floristic similarity|
|Received 2016-09-29 Revised Online: 2017-05-03|
|Fund:the Chinese Academy of Sciences' Frontier Science Key Project (QYZDY-SSWSMC014), and The Federal Ministry for Economic Cooperation and Development, Germany (#13.1432.7e001.00), and Project funded by Yunnan Postdoctoral Science Foundation (Y732081261)|
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Fig. 7. Schematic of community function recovery among different conditions and stages; (a) a serious condition, (b) moderate condition, (c) expected restoration. For details of
serious or moderate conditions, see Fig. 5.
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