| 祁连山水源涵养林土壤水文特征研究 |
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| 引用本文： | 党宏忠,周泽福,赵雨森,杨洪学.祁连山水源涵养林土壤水文特征研究[J].林业科学研究,2006,19(1):39-44. |
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| 作者姓名： | 党宏忠 周泽福 赵雨森 杨洪学 |
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| 作者单位： | 1. 中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京,100091
2. 东北林业大学林学院,黑龙江,哈尔滨,150040 |
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| 摘 要： | 通过对祁连山水源涵养林区的苔藓-青海云杉林、亚高山灌丛、灌木-青海云杉林、中低山灌木林和祁连圆柏以及牧草地等6种植被土壤水分物理性质的测定与计算,比较分析了不同植被的水源涵养能力,建立了主要土壤类型的入渗模型、土壤水分消退方程,评价了不同植被土壤层水文特征及其与植被间的关系.祁连山区主要森林的平均土壤密度均小于1 g·cm-3,土壤的蓄水能力很强但各植被间差异较大.各种森林植被土壤均表现出较高的入渗性能,土壤初渗率、稳渗率及蓄水能力从大到小的次序均为:苔藓-青海云杉林、亚高山灌丛、灌木-青海云杉林、中低山灌木林、祁连圆柏林和牧草地.在相同的环境条件下,森林土壤(山地灰褐土)的保水能力较高,水势消退曲线呈凸形,而牧草地土壤(山地栗钙土)的保水能力相对较弱,水势消退曲线呈凹形.土壤含水量相同时,后者所持水分的有效性更大.
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| 关 键 词： | 祁连山 水源涵养林 土壤 水文 |
| 文章编号： | 1001-1498（2006）01-0039-06 |
| 收稿时间： | 2004-11-23 |
| 修稿时间： | 2004-11-23 |
Soil Hydrological Characteristics of Water Conservation Forest in Qilian Mountains |
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| DANG Hong-zhong,ZHOU Ze-fu,ZHAO Yu-sen and YANG Hong-xue.Soil Hydrological Characteristics of Water Conservation Forest in Qilian Mountains[J].Forest Research,2006,19(1):39-44. |
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| Authors: | DANG Hong-zhong ZHOU Ze-fu ZHAO Yu-sen and YANG Hong-xue |
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| Institution: | Research Institute of Forestry, CAF; Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China;Research Institute of Forestry, CAF; Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China;Forestry College of North East Forestry University, Harbin 150040, Heilongjiang, China;Forestry College of North East Forestry University, Harbin 150040, Heilongjiang, China |
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| Abstract: | On the base of surveying and analyzing soil water physical characteristics of 5 main soil types of water conservation forest and grassland in Qilian Mountains, the water-holding capability and infiltration rate of soil layer were measured. Meanwhile, the water content loss equation and water potential equation were modeled too. It indicated: forest soil had low bulk weight which were all less than 1 g ?cm -3 , with high infiltration rate and high water-holding capability, although there existed marked difference among them which could be ranked in the order of moss-Picea crassifolia, sub-alpine shrubs, shrub-Picea crassifolia, mid-low-mountain shrubs, Sabina przewalskii and grassland. The water-holding capability of Grey-drab forest soil was higher than that of Castanozem grassland soil in the same environment condition (water loss for e-vaporation) , the water loss curve of the former shaped in protruding and the latter was reversely, but the availability of soil water of the latter was higher while there were same water content level, and that played a more significant role to the life of forest especially in water deficient period. |
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| Keywords: | Qilian Mountains water conservation forest soil hydrology |
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