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| 三峡水库蓄水对消落带土壤理化性质的影响 | |
| 引用本文： | 常超,谢宗强,熊高明,储立民.三峡水库蓄水对消落带土壤理化性质的影响[J].自然资源学报,2011,26(7):1236-1244. |
| 作者姓名： | 常超 谢宗强 熊高明 储立民 |
| 作者单位： | 1. 中国科学院 植物研究所 植被与环境变化国家重点实验室,北京 100093; 2. 中国科学院 研究生院,北京 100049 |
| 基金项目： | 国家水专项课题(2009ZX07104-003-05); 中国科学院西部行动计划项目(KZCX2-XB2-07-03) |
| 摘 要： | 土壤养分是三峡库区消落带生态系统的重要组成部分。通过对石宝寨消落带12个水位96个样点的土壤分析,研究了消落带不同水位土壤容重、酸碱度、有机质、全氮、全磷、全钾、速效氮、速效磷、速效钾的含量变化。结果表明:①淹水后消落带土壤由微碱性(pH值=7.91)变为碱性(pH值=8.14),养分平均含量普遍下降,速效钾含量下降最多(46.7%),淹水易造成养分流失;②消落带土壤淹水前各测定指标在不同高程之间差异均不显著(P>0.05);③不同淹水强度的土壤容重、有机质、全氮、速效钾含量差异极显著(P＜0.01),氨态氮含量差异显著(P＜0.05),淹水土壤pH值高于未淹水土壤,有机质、全氮及速效钾含量低于未淹水土壤;④长期淹水后(146 m)的土壤出现有机质及全量养分累积现象。 |
| 关 键 词： | 全量养分 氨态氮 淹水 水位 |
| 收稿时间： | 2010-09-16 |
| 修稿时间： | 2011-01-16 |
The Effect of Flooding on Soil Physical and Chemical Properties of Riparian Zone in the Three Gorges Reservoir |
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| CHANG Chao,XIE Zong-qiang,XIONG Gao-ming,CHU Li-min.The Effect of Flooding on Soil Physical and Chemical Properties of Riparian Zone in the Three Gorges Reservoir[J].Journal of Natural Resources,2011,26(7):1236-1244. | |
| Authors: | CHANG Chao XIE Zong-qiang XIONG Gao-ming CHU Li-min |
| Institution: | 1. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, CAS, Beijing 100093, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
| Abstract: | The soil physical and chemical properties play a key role in ecological environment of the riparian zone in the Three Gorges Reservoir.This research was done to analyze the variation of soil nutrients after flooding which would contribute to the study of the flooding effect on water-soil in the reservoir riparian zone.We measured the content of soil bulk density,pH,organic matter,total N,total P,total K,NO3-N,NH4-N,available P and available K in different water levels of the riparian zone in the Three Gorge... |
| Keywords: | total nutrients ammonia flooding water level |
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