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园林树木胡枝子在水土保持中的作用分析 被引量:3
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作者 任玉彬 《现代园艺》 2011年第12X期37-37,共1页
胡枝子生长的土壤从微碱到微酸性。多数树种具有耐干旱、耐贫瘠、耐寒冷、耐热、耐酸、耐刈割等优良特性,可用作水土保持和土壤改良,是荒山荒地造林的先锋树种。胡枝子根系生长较快,主根分叉较多且不十分明显,20cm以下已无明显主根,以... 胡枝子生长的土壤从微碱到微酸性。多数树种具有耐干旱、耐贫瘠、耐寒冷、耐热、耐酸、耐刈割等优良特性,可用作水土保持和土壤改良,是荒山荒地造林的先锋树种。胡枝子根系生长较快,主根分叉较多且不十分明显,20cm以下已无明显主根,以细根为主;0~20cm的浅层根系较发达;这说明胡枝子除具有利用深层水分的能力外,还具有充分利用地表水的能力。另外,它的枝条基部还可产生不定根。这些都是它长期适应干旱环境的特有性质。 展开更多
关键词 荒山荒地造林拦蓄降水 重要建群种 园林树 水土保持 土壤改良 胡枝子
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Variations of population structure and important value of the main edificators along the elevation gradient on the northern slope of Changbai Mountain 被引量:1
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作者 姜萍 叶吉 +1 位作者 郝占庆 邓红兵 《Journal of Forestry Research》 SCIE CAS CSCD 2003年第2期117-121,共5页
From 700 m to 1900 m on the northern slope of Changbai Mountain, 13 plots with an interval of 100 m in elevation were investigated to study the variations of population structure and important value of the main edific... From 700 m to 1900 m on the northern slope of Changbai Mountain, 13 plots with an interval of 100 m in elevation were investigated to study the variations of population structure and important value of the main edificators along the elevation gradient. In their core distribution areas, most of the edificators had healthy population structure and could regenerate smoothly except Larix olgensis, but important value of Larix olgensis had no obvious variations with elevation changes, which showed that Larix olgensis had its own particularity and strong adaptability. At high elevation above 1800 m, Betula ermanii was the only species that could form a mono-dominant community. Important values of Pinus koraiensis and Acer mono had similar changing trends, and they had the similar ecological adaptabilities. 展开更多
关键词 Edificator POPULATION Important value STRUCTURE Elevation gradient Changbai Mountain
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