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林业科学 ›› 2010, Vol. 46 ›› Issue (4): 1-7.doi: 10.11707/j.1001-7488.20100401

• 论文 •    下一篇

秃杉林与杉木连栽林的土壤理化性质及林木生长量比较

黄承标1;曹继钊2;吴庆标1;韦家国3;蒙跃环3;李保平1   

  1. 1.广西大学林学院 南宁 530005; 2.广西林业科学研究院 南宁 530001; 3.广西南丹县山口林场 南丹 547200
  • 收稿日期:2009-01-19 修回日期:1900-01-01 出版日期:2010-04-25 发布日期:2010-04-25

Comparative Analysis on Soil Physi-Chemical Properties and the Tree Growth in Taiwania flousiana Plantations and Successive Rotation Plantations of Cunninghamia lanceolata

Huang Chengbiao1,Cao Jizhao2,Wu Qingbiao1,Wei Jiaguo3,Meng Yuehuan3,Li Baoping1   

  1. 1. Forestry College, Guangxi University Nanning 530005; 2. Guangxi Academy of Forestry Nanning 530001;3.Shankou Forest Farm of Nandan County in Guangxi Nandan 547200
  • Received:2009-01-19 Revised:1900-01-01 Online:2010-04-25 Published:2010-04-25

摘要:

选择在杉木1代林采伐迹地上营造的8,11和14年生秃杉林及8,11和14年生杉木连栽2代林进行土壤理化性质及林木生长量对比试验。结果表明: 8,11和14年生秃杉林地土壤密度依次为0.893~1.112,0.797~1.256和0.598~1.211 g·cm-3,比杉木林下降0.9%~6.9%; 3个林龄秃杉林地土壤总孔隙度依次为45.69%~65.33%,46.45%~68.74%和39.82%~68.26%,比杉木林提高6.6%~8.7%; 3个林龄秃杉林地土壤通气度依次为3.43%~11.43%,4.15%~19.73%和2.28%~12.23%,比杉木林提高14.2%~24.4%; 3个林龄秃杉林地土壤饱和持水量依次为46.89%~66.50%,40.90%~68.09%和42.36%~98.15%,比杉木林提高12.4%~14.9%;3个林龄秃杉林地土壤pH值依次为4.30~5.10,4.40~4.80和4.13~4.55,比杉木林降低1.3%~6.3%; 3个林龄秃杉林地土壤有机质含量依次为46.03~71.45,34.96~68.67和25.59~79.38 g·kg-1,8年生比杉木林略低,11和14年生比杉木林提高23.4%~77.1%; 3个林龄秃杉林地土壤全氮含量依次为1.78~3.55,1.97~3.04和2.01~3.12 g·kg-1,水解氮含量依次为146.9~355.3,185.0~370.5和136.6~365.9 mg·kg-1,均表现为8年生秃杉林比杉木林略低,11和14年生秃杉林比杉木林提高20.1%~35.6%; 3个林龄秃杉林地土壤速效磷含量依次为0.5~2.7,0.6~1.5和0.6~2.8 mg·kg-1,比杉木林提高11.1%~54.5%; 3个林龄秃杉林地土壤速效钾含量依次为15.4~137.5,34.5~115.5和18.7~89.1 mg·kg-1,比杉木林降低23.6%~47.6%;3个林龄秃杉林分平均胸径依次为10.70,12.67和14.13 cm,比杉木林提高12.4%~36.7%; 3个林龄秃杉林分平均树高依次为8.63,11.47和13.33 m,比杉木林提高11.7%~30.2%; 3个林龄秃杉林分平均蓄积量依次为93.308,153.418和203.824 m3·hm-2,比杉木林提高37.7%~117.5%。

关键词: 杉木连栽, 秃杉引种, 土壤理化性质, 林木生长量, 广西南丹县

Abstract:

Soil physi-chemical properties and the tree growth were compared in successive rotation plantations of Cunninghamia lanceolata (CR Chinese Fir) in tree different ages(8-year-old, 11-year-old and 14-year-old), and Taiwania flousiana plantations with the same age pattern which were afforested in previous slash of Chinese Fir. The results showed that soil bulk densities were 0.893-1.112, 0.797-1.256 and 0.598-1.211 g·cm-3 respectively in 8,11,14-year-old Taiwania flousiana plantations soils (0~100 cm), which were lower 0.9%-6.9% than those in CR Chinese Fir plantations. Total soil porosity in the three ages of Taiwania flousiana plantations was respectively 45.69%-65.33%,46.45%-68.74% and 39.82%-68.26%,and all higher 6.6%-8.7% than that in the CR Chinese Fir plantations. The soil ventilation degree was respectively 49.57%-59.71%, 44.55%-66.68% and 42.38%-66.16%,and also higher 14.2 %-24.4% than that in the CR Chinese Fir plantations. The soil saturation moisture capacity was respectively 3.43%-11.43%,4.15%-19.73% and 2.28%-12.23%, and higher 12.4%-14.9% than that in the CR Chinese Fir plantations; The saturated water contents were 46.89%-66.50%, 40.90%-68.09% and 42.36%-98.15% respectively,and higher 12.4%-14.9% than that in the CR Chinese Fir plantations. pH values of forest soil (0-40 cm layer) were 4.30-5.10,4.40-4.80 and 4.13-4.55 respectively in 8,11,14-years-old of Taiwania flousiana plantations, which were lower 1.3%-6.3% than that in the CR Chinese Fir plantations , and the organic matter contents were 46.03-71.45,34.96-68.67 and 25.59-79.38 g·kg-1 , and lower that in CR Chinese Fir plantations in the 8-year-old, however higher 23.4%-77.1% than that in the 11, 14-years-old. Total nitrogen and hydrolysis nitrogen contents were 1.78-3.55,1.97-3.04,2.01-3.12 g·kg-1 and 146.9-355.3,185.0-370.5,136.6-365.9 mg·kg-1,and slightly lower than that in 8-year-old is and higher 20.1%-35.6% in the 11, 14-years-old. Available P contents were 0.5-2.7,0.6-1.5 and 0.6-2.8 mg·kg-1 respectively, and higher than that 11.1%-54.5% in the CR Chinese Fir plantations. Available K contents were 15.4-137.5, 34.5-115.5 and 18.7-89.1 mg·kg-1,and lower 23.6%-47.6% than that in the CR Chinese Fir plantations. In the 8,11,14 years-old of Taiwania flousiana plantations, the average diameter was 10.70 , 12.67 and 14.13 cm respectively, and higher 12.4%-36.7% than that in the CR Chinese Fir plantations. The average tree height were 8.63, 11.47 and 13.33 m respectively, and higher 11.7%-30.2% than that in the CR Chinese Fir plantations. Tree stands volumes were 93.308, 153.418 and 203.824 m3·hm-2 respectively, higher 37.7%-117.5% than that in the CR Chinese Fir plantations.

Key words: continuous planting Cunninghamia lanceolata, Taiwania flousiana introduction experiments, soil physi-chemical properties, tree growth, Nandan County of Guangxi