华北落叶松人工林不同造林密度土壤理化性质分析
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摘要
在内蒙古农业大学和内蒙古和盛生态科技研究有限公司合作建立的赤峰赛罕乌拉综合防护林示范基地,以不同造林密度(1 407,1 675,2 680株/hm2)的华北落叶松人工林为研究对象,分别设置3块标准地,对土壤进行分层采样,室内测定土壤理化性质。结果表明:不同造林密度华北落叶松人工林的土壤理化性质均有显著差异。造林密度为1 407株/hm2时,土壤容重最小(0. 97),总孔隙度(62. 6%)及含水量(14. 75%)最大。有机质的积累过程较慢,无显著改变,但表层土壤全N (110. 06g/kg)、有效P (0. 57g/kg)、有效K (29. 11g/kg)含量均在造林密度为1 407株/hm2时最高。
In the Chifeng Saihanwula Integrated Shelter Forest Demonstration Base established by Inner Mongolia Agricultural University and Inner Mongolia Hesheng Ecological Science and Technology Researcher Co.,Ltd.,the Larch plantations with different stand densities(1 407,1 675,2 680 plants/hm2)were taken as the research object. Three standard plots each were set up the soil stratified,and the physical and chemical properties of the soil measured indoors. The results showed that the soil physical and chemical properties of Larix principis-rupprechtii plantations with different afforestation densities were significantly different. When the stand density was 1 407 plants/hm2,the soil bulk density was the smallest(0. 97),the total porosity(62. 6%) and the water content(14. 75%) were the largest. The accumulation process of organic matter was slow and there was no significant change,However,the contents of total N(110. 06 g/kg),effective P(0. 57 g/kg) and effective K(29. 11 g/kg) in the topsoil were highest at thestand density of 1 407 plants/hm2.
In the Chifeng Saihanwula Integrated Shelter Forest Demonstration Base established by Inner Mongolia Agricultural University and Inner Mongolia Hesheng Ecological Science and Technology Researcher Co.,Ltd.,the Larch plantations with different stand densities(1 407,1 675,2 680 plants/hm2)were taken as the research object. Three standard plots each were set up the soil stratified,and the physical and chemical properties of the soil measured indoors. The results showed that the soil physical and chemical properties of Larix principis-rupprechtii plantations with different afforestation densities were significantly different. When the stand density was 1 407 plants/hm2,the soil bulk density was the smallest(0. 97),the total porosity(62. 6%) and the water content(14. 75%) were the largest. The accumulation process of organic matter was slow and there was no significant change,However,the contents of total N(110. 06 g/kg),effective P(0. 57 g/kg) and effective K(29. 11 g/kg) in the topsoil were highest at thestand density of 1 407 plants/hm2.
引文
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[14] GB/T 15776-2016,造林技术规程[S].
[2]王彦辉.面向21世纪的林业—可持续发展全球战略下的林业科学技术[M].北京:中国农业科学技术出版社,1998:456-471.
[3]温佐吾,谢双喜,周运超,等.造林密度对马尾松林分生长木材造纸特性及经济效益的影响[J].林业科学,2000,36(S1):36-43.
[4]何艺玲,傅懋毅.人工林林下植被的研究现状[J].林业科学研究,2002,15(6):727-733.
[5]盛炜彤.杉木林的密度管理与长期生产力研究[J].林业科学,2001,37(5):2-9.
[6]康冰,刘世荣,蔡道雄,等.马尾松人工林林分密度对林下植被及土壤性质的差异[J].应用生态学报,2009,20(10):2323-2331.
[7]周树平,梁坤南,杜健,李碧均,周再知,黄桂华.不同密度柚木人工林林下植被及土壤理化性质的研究[J].植物研究,2017,37(2):200-210.
[8]李国雷,刘勇,吕瑞恒,等.华北落叶松人工林密度调控对林下植被发育的作用过程[J].北京林业大学学报,2009,31(1):19-24.
[9]哈琴,王明玖,常国军,等.赛罕乌拉国家级自然保护区不同草地类型植被碳密度及其分配[J].干旱区资源与环境,2013,27(4):41-46.
[10]鲍士旦.土壤农化分析[M].北京:中国农业出版社,2000.
[11]郑纪勇,邵明安,张兴昌.黄土区坡面表层土壤容重和饱和导水率空间变异特征[J].水土保持学报,2004,18(3):53-56.
[12]潘湘海.塞罕坝华北落叶松人工林土壤水分的研究[J].河北林业科技,2002(5):7.
[13]徐成立,翟洪波,李吉跃,等.油松栓皮栎混交林林分合理密度探讨[J].东北林业大学学报,2005,33(S1):23-25.
[14] GB/T 15776-2016,造林技术规程[S].