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Forest and Grassland Resources Research >

2018 , Vol. 0 >Issue 4: 47 - 54

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2018.04.009

Scientific Research

Effects of Thinning on Soil Physical and Chemical Properties and Soil and Water Conservation of Cunninghamia lanceolata Plantation in Different Age Forests

  • Quan ZHOU ,
  • Ruihui WANG ,
  • Cheng ZHONG ,
  • Yangchao ZHOU ,
  • Weinan FU
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  • 1. Central South Forestry Investigation,Planning and Design Institute,Changsha 410014,China
    2. Central South University of Forestry and Technology,Changsha 410004,China

Received date: 2018-06-01

  Revised date: 2018-06-12

  Online published: 2020-09-25

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Abstract

In this study,the middle aged plantation of 8-year-old Cunninghamia lanceolata plantation in Jing’an,Jiangxi Province and 12a C.lanceolata plantation in Huarong,Hunan Province were selected as the research objects.The physical and chemical properties and soil and water conservation of soil layer (0~15 cm,15~30 cm,thinned stand and unthinned stand)were analyzed and compared by the method of test and quantitative statistics.The result shows that thinning can reduce the soil bulk density,increase the porosity and total porosity of the soil.The increase of the porosity of the topsoil is bigger than that of the subsoil layer and the increase of the porosity of young forest is bigger than that of middle age forest.Thinning had no obvious effect on the pH value of C.lanceolata woodland,which was between 4.0 to 5.0.Thinning promoted the decomposition of organic matter in C.lanceolata woodland and the highest value was 16.83 g/kg in young group.The contribution in topsoil is higher than that in subsoil layer and the contribution in in the young forest is greater than that in middle age forest.The content of organic was higher than that of control plot and the difference was significant.The effect of thinning on soil nutrient elements is generally smaller,such as potassium and phosphorus.In the first year after thinning,the runoff of C.lanceolata woodland increased,but later,the runoff of C.lanceolata woodland showed a tendency to be lower than that of the same land.The effect of the middle age group was better than that of the young group.The effect of thinning on water purification rate,net mud rate and runoff coefficient is similar to that of surface runoff.The experimental results are beneficial to providing scientific basis for scientific and rational management of C.lanceolata plantations and have great guiding significance for production.

Key words： thinning; stand of different ages; Cunninghamia lanceolata plantation; physical and chemical properties of soil; soil retention and water retention

Cite this article

Quan ZHOU , Ruihui WANG , Cheng ZHONG , Yangchao ZHOU , Weinan FU . Effects of Thinning on Soil Physical and Chemical Properties and Soil and Water Conservation of Cunninghamia lanceolata Plantation in Different Age Forests[J]. Forest and Grassland Resources Research, 2018 , 0(4) : 47 -54 . DOI: 10.13466/j.cnki.lyzygl.2018.04.009

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