皆伐对杉木林土壤物理性质的短期影响  

Short-term effect of clear cutting on soil physical properties in Chinese fir stand

作　　者：王敏 列淦文[2] 黄香兰[2] 叶龙华[2] 吴敏[2,3] 

机构地区：[1]佛山市国营云勇林场,广东高明528518 [2]华南农业大学林学院,广东广州510642 [3]琉球大学理学院

出　　处：《湖南林业科技》2012年第3期18-21,45,共5页Hunan Forestry Science & Technology

基　　金：广东省林业局项目(4400-07041)

摘　　要：用环刀采集皆伐半年后的杉木林皆伐迹地土壤剖面0～5、5～10、10～15、15～20、20～25、25～30、30～35、35～40、40～45、45～50、65～70和90～95 cm土层的土样,测定其土壤容重、毛管孔隙度、非毛管孔隙度、总孔隙度和毛管持水量等。结果表明:随着土层深度的增加,皆伐迹地的土壤容重和毛管孔隙度增加,非毛管孔隙度波动性下降,总孔隙度和毛管持水量下降后微升;与杉木林地表土层的土壤相比,皆伐迹地表土层土壤的容重、孔隙度和毛管持水量均有所下降。The soil physical properties of Chinese fir stand after clear cutting based on the determination of soil bulk density, capillary porosity, non-capiUary porosity, total porosity and capillary moisture capacity at different layers（0 -5 cm, 5 - 10 cm, 10 -15 cm, 15 -20 cm, 20-25 cm, 25 -30 cm, 30-35 cm, 35 -40 cm, 40-45 cm, 45 -50 cm, 65 -70 era and90 -95 cm） . The results showed that with the increase of soil depth, the soil bulk density and capillary porosity increased, while non-capillary porosity de- creased after fluctuation, and total porosity and capillary moisture capacity decreased followed by a slight increase in dear cutting slash. The soil bulk density, porosity and capillary moisture capacity decreased in upper soil layers of the clear cutting slash compared with those of the Chinese fir stand.

关 键 词：杉木林 皆伐 土壤容重 毛管孔隙度 非毛管孔隙度 总孔隙度 毛管持水量 

分 类 号：S714.2[农业科学—林学]