柏木低效林改造不同模式土壤抗蚀性对比

doi:10.11707/j.1001-7488.20140614

Abstract

Abstract:

Large-area Cupressus funebris pure forests constructed for protection forests in Yangtze are a major forest type in hilly area Sichuan Basin, but are one of the two major low efficiency stands in Sichuan due to reasons. The plantations were reconstructed with planting different plant species in 2002.In this study, 6 planting patterns were selected to compare their soil anti-erodibility. The study area was located at Jingyang District, Deyang City, Sichuan Province. The experiment of soil anti-erodibility in different vegetable patterns was conducted in December 2010. The main results were: 1) There was significant influence of the reformation on soil physical properties, soil organic matter contents, fine root contents and water stable aggregates (P<0.05). Soil physical properties in BZQ were the best and those in CZ were the worst. The soil organic matter content was in the order: BZQ> BZ> BL> CB> LZ> CZ; the fine root contents were in the order: CZ> BZQ> BZ> CB> BL> LZ; water stable aggregates were in the order: BZQ> BL> BZ> CB> CZ> LZ. 2) Principal component analysis indicated that the sequences of soil anti-erodibility and water stable aggregates contents were fully consistent; the water stable aggregates were the largest contribution (58.93%) to the soil anti-erodibility in all parameters. Moreover, stepwise regression demonstrated that the comprehensive evaluation value was Y=97.236+1.889 X₅(P<0.01,R²=1.00). Comprehensive analysis of the above parameters showed that BZQ enhanced the ecological functions of C. funebris forests in Sichuan hilly area; consequently, BZQ was the best planting pattern among five patterns studied. This study suggests that the pattern selection is very important, and clearcutting should especially be careful. The appropriate pattern could improve soil corrosion resistance and reduce soil erosion, whereas improper patterns would exacerbate soil erosion.

Key words: Cupressus funebris, low efficiency stands, reconstructing patterns, soil anti-erodibility

CLC Number:

Fan Chuan, Zhou Yigui, Li Xianwei, Zhang Jian, Liao Hongliu, Li Fengting, Feng Maosong. Comparison of Soil Anti-Erodibility of Different Modes for Reforming Low Efficiency Stands of Cupressus funebris[J]. Scientia Silvae Sinicae, 2014, 50(6): 107-114.

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Comparison of Soil Anti-Erodibility of Different Modes for Reforming Low Efficiency Stands of Cupressus funebris

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