Soil Moisture and Its Influence on Seabuckthorn Growth in Semi-arid Loess Hilly Region

RUAN Chengjiang; LI Daiqiong

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Soil Moisture and Its Influence on Seabuckthorn Growth in Semi-arid Loess Hilly Region

- Soil Moisture and Its Influence on Seabuckthorn Growth in Semi-arid Loess Hilly Region
- Bulletin of Soiland Water Conservation Vol. 18, Issue 5, Pages: 27-30(1999)
- 作者机构：
  
  中国科学院水利部水土保持研究所, 陕西杨陵,712100
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- Published：1999
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RUAN Chengjiang, LI Daiqiong. Soil Moisture and Its Influence on Seabuckthorn Growth in Semi-arid Loess Hilly Region[J]. Bulletin of Soiland Water Conservation, 1999, 18(5): 27-30.
DOI：

RUAN Chengjiang, LI Daiqiong. Soil Moisture and Its Influence on Seabuckthorn Growth in Semi-arid Loess Hilly Region[J]. Bulletin of Soiland Water Conservation, 1999, 18(5): 27-30. DOI：

摘要

根据在安塞黄土丘陵沟壑区的观测资料，对5～7龄沙棘林地土壤水分及其对生长的影响进行了定量研究，为提高沙棘林地土壤水分利用率，改善其经营管理提供了科学依据。结果表明：（1）沙棘根系吸水范围可达2m土层以下，在0～2m土层内沙棘林地土壤水分的垂直变化特点为：随着土层深度的不断加深，土壤含水量呈减小的趋势，在30～50cm和80～100cm土层分别出现土壤水分强烈吸收层；（2）沙棘林地土壤水分的季节变化可分为3个时期：亏缺期、积累期和消退期，1998年全年雨量分配比较均匀，土壤水分有明显的干、湿季之分；（3）年生长季中，沙棘生长与其林地土壤水分间有显着的相关关系，且生长的季节动态滞后于土壤水分的季节变化

Abstract

According to the observed data from loess hilly region at Ansai county in 1998

soil moisture of 5～7 year seabuckthorn stands and its influence on seabuckthorn growth are studied．The experimental results showed that：(1) The absorption range of seabuckthorn roots can extend a depth of under 2 m layer

at the scope of 2 m layer

the characteristic of vertical variation of soil moisture of woodlands is that

soil moisture has a tendency of decreasing with the depth of layer increasing

there are two strong absorption layers of soil moisture at 30～50 cm and 80～100 cm layer; (2) The seasonal variation of soil moisture under seabuckthorn woodlands may be divided into three periods： deficient period

accumulative period and lessen period．In 1998

annual precipitation is much even

soil moisture has two obvious seasons of dry and humid; (3) In the annual growth season

the growth of seabuckthorn has marked correlation with soil moisture of woodlands

and seasonal variation of growth falls behind that of soil moisture．

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中国科学院水利部水土保持研究所

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