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Citation:

Comparative Research on Soil Fertility of Different Artificial Plantations in Yuanmou Dry-iot Valley,Yunnan Province

  • Received Date: 2005-12-15
  • The paper analyzed the changes of soil physical and chemical properties,enzyme activities and the amount of microbes of 8 different types of artificial forest in 3 experimental sites in Yuanmou County,Yunnan Province.At the same time,comprehensive evaluation of soil fertility in artificial forests was conducted by factor analysis.The results showed that soil fertilities were improved in different artificial forests,especially in little-leaf acacia pure forests and in acacia and non-acacia mixed forests.It was very useful for the recovery of degraded soil ecological system in dry-hot valley.On the other hand,it was found that the time of afforestation and the recovery of soil ecological system have obvious positive correlation.So the authers suggested that it should enhance the management of the soil in artificial forest,and decrease or forbid external disturbance.
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Comparative Research on Soil Fertility of Different Artificial Plantations in Yuanmou Dry-iot Valley,Yunnan Province

  • 1. Research Institute of Resources Insects,CAF
  • 2. Yuanmou Desert Ecosystem Research Station of the State Forestry Administration,Kunming 650224,Yunnan,China
  • 3.  College of Biologic Sciences and Biotechnology,Beijing Forestry University,Beijing 100083,China
  • 4.  International Centre for Bamboo and Rattan,Beijing 100102,China

Abstract: The paper analyzed the changes of soil physical and chemical properties,enzyme activities and the amount of microbes of 8 different types of artificial forest in 3 experimental sites in Yuanmou County,Yunnan Province.At the same time,comprehensive evaluation of soil fertility in artificial forests was conducted by factor analysis.The results showed that soil fertilities were improved in different artificial forests,especially in little-leaf acacia pure forests and in acacia and non-acacia mixed forests.It was very useful for the recovery of degraded soil ecological system in dry-hot valley.On the other hand,it was found that the time of afforestation and the recovery of soil ecological system have obvious positive correlation.So the authers suggested that it should enhance the management of the soil in artificial forest,and decrease or forbid external disturbance.

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