| 大兴安岭典型针阔混交林区土壤持水效应 |
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| 引用本文： | 罗金明,王永洁,陈凯,胡守才,刘志远.大兴安岭典型针阔混交林区土壤持水效应[J].水土保持通报,2014(1):7-13. |
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| 作者姓名： | 罗金明 王永洁 陈凯 胡守才 刘志远 |
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| 作者单位： | 齐齐哈尔大学理学院, 黑龙江齐齐哈尔 161006;齐齐哈尔大学理学院, 黑龙江齐齐哈尔 161006;齐齐哈尔大学理学院, 黑龙江齐齐哈尔 161006;黑龙江省南瓮河国家级自然保护区, 黑龙江加格达奇 165012;黑龙江省南瓮河国家级自然保护区, 黑龙江加格达奇 165012 |
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| 基金项目： | 国家青年基金项目"自然-人为双重影响下东北地区典型沼泽湿地水文过程演变机制"(41101034);黑龙江省教育厅青年学术骨干支持项目"干旱胁迫下中小型土壤动物对我国东北盐沼湿地退化的响应与预警"(1253G063);齐齐哈尔大学青年教师科研启动项目"扎龙湿地的重金属污染对丹顶鹤的生态健康的影响研究"(2012K-Z10);黑龙江省普通高等学校地理环境遥感监测重点实验室开放课题资助项目"扎龙湿地环境中重金属富集对丹顶鹤生态健康的影响" |
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| 摘 要： | 受地貌条件的影响,大兴安岭低山丘陵地区土壤的水、热性质出现分异,发育的土壤类型以及植被都表现出典型的高寒森林湿地中域景观特征。沿局部分水岭向河谷低漫滩发育4种土壤类型,依次为塔头苔草草甸土—灰色森林土—白浆土—暗棕壤。大兴安岭地区森林湿地存在明显的冻融过程,冻融作用的影响下森林湿地表层的水分数量和状态都发生明显的变化。在冻融过程中,位于地势较高的森林植被湿地仅表层储存大量水分,而位于低位的塔头苔草湿地整体土体的水分数量和状态都发生明显的变化。白浆土的水分特征曲线非常平缓,表明土壤水分变化微弱。大兴安岭地区山岭和山麓发育的土壤土层较薄,使得除了枯落物(O)层外其他土层土壤持水性能都弱,一旦该地区枯枝落叶层受到破坏,整个山岭表层的土壤将发生严重的水土流失。
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| 关 键 词： | 森林土壤 水分特征曲线 冻融作用 针阔混交林 |
| 收稿时间： | 2013/3/13 0:00:00 |
| 修稿时间： | 2013/4/11 0:00:00 |
Soil Water Retention Effect in Typical Mixed Plantation of Broadleaf and Coniferous Leaf Forest Region of Daxingan Mountains |
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| LUO Jin-ming,WANG Yong-jie,CHEN Kai,HU Shou-cai and LIU Zhi-yuan.Soil Water Retention Effect in Typical Mixed Plantation of Broadleaf and Coniferous Leaf Forest Region of Daxingan Mountains[J].Bulletin of Soil and Water Conservation,2014(1):7-13. |
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| Authors: | LUO Jin-ming WANG Yong-jie CHEN Kai HU Shou-cai and LIU Zhi-yuan |
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| Institution: | School of Sciences, Qiqihar University, Qiqihar, Heilongjiang 161006, China;School of Sciences, Qiqihar University, Qiqihar, Heilongjiang 161006, China;School of Sciences, Qiqihar University, Qiqihar, Heilongjiang 161006, China;Nanwenghe Natural National Reserve, Jiagedaqi, Heilongjiang 165012, China;Nanwenghe Natural National Reserve, Jiagedaqi, Heilongjiang 165012, China |
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| Abstract: | As affected by the local topographical condition, soil moisture and thermal properties in the Daxingan Mountains varied largely, and soil types and vegetation in the region appeared to be the typical high-cold forest wetland with middle scale landscape feature. There were four types of soils from the local watershed divide to the low flood plain, i.e., sedge meadow soil, gray forest soil, Baijiang soil and dark brow forest soil. Obvious freeze-thaw process occurred in the forest wetland of the Daxingan Mountains, whereby the soil moisture content and phase varied significantly. Large soil moisture storage was observed merely in the surface horizon of forest soil in high relief during the freezing period, whereas obvious change in soil moisture content and phase was observed in the meadow soil in low relief. The water retention curve of Baijiang soil is very smooth, suggesting minor water change. The thin soil horizon developed in the mountain ridge and foot leads to a weak water retention capacity, except the litter layer(O horizon). When the litter layers are destroyed by human disturbances, serious soil erosion will occur. |
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| Keywords: | forest soil water retention curve freeze-thaw action mixed plantation of broadleaf and coniferous leaf |
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