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Chinese Journal of Applied Ecology ›› 2009, Vol. 20 ›› Issue (09): 2097-2104.

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Physical and chemical properties of throughfall in main forest types of secondary forest ecosystem in montane regions of eastern Liaoning Province, China.

XI Xing-jun1,2,3;YAN Qiao-ling1,2;YU Li-zhong1,2;ZHU Jiao-jun1,2;ZHANG Cai-hong1,2,3;ZHANG Jin-xin1,2;LIU Chang-xia4   

  1. 1Qingyuan Experimental Station of Forest Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2Liaoning Key Laboratory for Management of Non-commercial Forests, Shenyang 110016, China|3Graduate University of Chinese Academy of Sciences, Beijing 100049, China|4Forestry Bureau of Qingyuan Manzu Autonomous County, Qingyuan 113300, Liaoning, China
  • Received:2008-12-25 Online:2009-09-20 Published:2009-09-20

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Abstract: From July to September 2008, a measurement was made on the physical an
d chemical properties of bulk precipitation and throughfall in five main forest
types, i.e., larch plantation (LP), Fraxinus rhynchophylla stand (FR), mixed for
est stand (MF), Korean pine plantation (KP), and Mongolian oak stand (MO), of se
condary forest ecosystem in montane regions of eastern Liaoning Province, China.
 Comparing with bulk precipitation, the throughfall in the five forest types was
 significantly acidified (P＜005), and the acidification degree was in the
 order of KP>LP>MF>MO>FR. The conductivity and total dissolved solids of the
throughfall increased significantly (P＜005), and were in the sequence of
MO>FR>LP>MF>KP. The dissolved oxygen  concentration of the throughfall lowere
d significantly (P＜005), with the rank of KP>MF>FR>MO>LP, while the Cl-
 concentration increased significantly, ranked as LP>MO>MF>FR>KP. The NO3- c
oncentrations of the throughfall in FR, MO and MF were higher, while those in LP
 and KP were lower than that of the bulk precipitation.

Key words: Larch plantation, Korean pine plantation, natural secondary forest, pH, NO3-, tobacco, biocontrol agents combination, growth and development, induced resistance, Phytophthora nicotianae.