| 疏勒河中下游胡杨林土壤水盐空间变化与影响 |
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| 引用本文： | 刘普幸,姚晓军,张克新,霍华丽.疏勒河中下游胡杨林土壤水盐空间变化与影响[J].水科学进展,2011,22(3):359-366. |
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| 作者姓名： | 刘普幸 姚晓军 张克新 霍华丽 |
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| 作者单位： | 1.西北师范大学地理与环境科学学院, 甘肃兰州730070; |
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| 基金项目： | 国家自然科学基金资助项目，甘肃省自然科学基金资助项目 |
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| 摘 要： | 基于河西走廊疏勒河中下游绿洲天然胡杨林下8个采样点720个土壤样品和6.8524 hm2的7个样方,应用统计学及相邻格子法等研究了胡杨林土壤水盐的空间变化特征及其影响。结果表明:研究区土壤含水量随深度而增加,土壤全盐量变化与之相反,两者在80 cm土层之上变化剧烈,之下变化平缓;土壤水盐含量变异差异明显,均属于中强度变异。各层土壤水盐含量存在着自中游向下游水分减少、盐分增加、表层聚盐加重的显著空间分布规律。研究区胡杨林生长受到土壤水盐胁迫,种群结构残缺;下游胡杨林分偏老,稀疏矮小,已明显衰退。长此下去,下游胡杨林将因快速衰退演替而全部死亡。
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| 关 键 词： | 胡杨林 土壤水盐 空间变化 种群结构 胁迫 疏勒河中下游绿洲 |
| 收稿时间： | 2010-07-28 |
Spatial variation and effects of soil moisture and salt content of populus euphratica Oliv in the middle and lower reaches of the Shule River |
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| LIU Pu-xing,YAO Xiao-jun,ZHANG Ke-xin,HUO Hua-li.Spatial variation and effects of soil moisture and salt content of populus euphratica Oliv in the middle and lower reaches of the Shule River[J].Advances in Water Science,2011,22(3):359-366. |
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| Authors: | LIU Pu-xing YAO Xiao-jun ZHANG Ke-xin HUO Hua-li |
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| Affiliation: | 1.College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China;2.Cold and Arid Region Environment and Engineering Research Institute, CAS, Lanzhou 730000, China |
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| Abstract: | 720 soil samples were collected at eight sites together with 7 populus euphratica Oliv samples obtained from a 6.852 4 hm2 sized natural forest.The object of this study is to investigate the spatial variation and effects of moisture and salt content in soil on populus euphratica Oliv in the middle and lower reaches of the Shule River in Hexi Corridor,Western China.The samples are analyzed using statistical and contiguous quadrat methods.The results show that the soil moisture content is increased with the d... |
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| Keywords: | populus euphratica soil moisture and salinity spatial variability population structure intimidation the middle and lower reaches of the Shule River basin |
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