Change Pattern of Soil Water Content in Different Dunes and Grassland in Horqin Sandy Land

LI Yanqing; ZHANG Tonghui; LIU Xinping; TONG Xunzhang; TANG Xia; LIAN Jie

您当前的位置：

首页 >

文章列表页 >

Change Pattern of Soil Water Content in Different Dunes and Grassland in Horqin Sandy Land

- Change Pattern of Soil Water Content in Different Dunes and Grassland in Horqin Sandy Land
- Bulletin of Soiland Water Conservation Vol. 29, Issue 3, Pages: 31-35(2010)
- 作者机构：
  
  1. 中国科学院寒区旱区环境与工程研究所,甘肃,兰州,730000
  2. 中国科学院研究生院,北京,100049
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
移动端阅览
LI Yanqing, ZHANG Tonghui, LIU Xinping, et al. Change Pattern of Soil Water Content in Different Dunes and Grassland in Horqin Sandy Land[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 31-35.
DOI：

LI Yanqing, ZHANG Tonghui, LIU Xinping, et al. Change Pattern of Soil Water Content in Different Dunes and Grassland in Horqin Sandy Land[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 31-35. DOI：

摘要

于2005—2008年5—9月

利用中子水分仪对科尔沁沙地的流动沙丘、固定沙丘和沙质草地的不同深度(0—160cm)的土壤水分进行了为期4a的定期观测。采用方差分析和多重比较等方法

并采用变异系数对土壤水分的时空变异进行了分析。结果表明

可将土壤水分剖面的变化划分为3层:土壤水分剧变层(0—40cm)

稳定层(41—130cm)

活跃层(131—160cm)。在0—40cm土壤层

3种类型沙地土壤水分表现为随深度增加而增加

在41—130cm土壤层则随深度增加而减小

而在131—160cm土壤层流动沙丘表现为继续减小

但其它两种沙地的土壤水分则随深度增加而增加。同时土壤水分变异系数表现为:流动沙丘>固定沙丘>沙质草地。土壤水分在不同月份的变化表现为:7月>8月>6月>9月>5月

各月之间总体上差异性显著;各类型沙地土壤水分的年变化为:固定沙丘总体表现出逐年减小的趋势

沙质草地有变化但差异不大

而流动沙丘则随降雨的变化而变化。

Abstract

Soil water content in 0 —160 cm layers in mobile dune

fixed dune

and sandy grassland was monitored regularly in sit u with neutron probe (CNC100

Beijing) from 2005 to 2008. The relationships between soil moisture and environmental factors were analyzed with multiple comparison and ANOVA. Results showed that three layers can be identified according to the vertical changes of soil water content in each site. They were drastic change layer (0 —40 cm)

relative stable layer (41 —130 cm)

and activity layer (131 —160cm) . Soil water content was increased with the increase of sample depth in layer of 0 —40 cm

but decreased in layer of 41 —130 cm in all sites. However

soil water content was decreased continuously with the increase of sample depth in layer of 131 —160 cm in mobile dune only

but increased in other sites. By the coefficient variation of soil water content

landscape units presented the order of mobile dune > fixed dune > sandy grassland. There was a significant difference in soil water content in all sites in each month and by soil water content

months have the order of J uly > August > J une > May > September . Variation of soil water content between years showed that there were a decreasing trend in fixed dune

a bit of difference in sandy grassland

and a complex pattern in mobile dune as affected directly by rainfall.

关键词

Keywords

references

Views

1966

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Weathering characteristics of surface sediments in Horqin sandy land revealed by major chemical elements

Effects of Caragana microphylla Communities on Protection and Improvement of Soils in Horqin Sandy Land

Change of Landscape Pattern of Typicsl Area in Horqin Sand Land

Allocation of Soil Organic Carbon in Physical Fractions as Affected by Plantation in Mobile Sand Dune

Spatial and Seasonal Variability of Soil Water in Road Slopes

Related Author

Xu Chenglin

Wei Lulu

Shen Xueyan

Jia Feifei

LUO Yong-ming

JIANG De-ming

QIU Lan-lan

WANG Juan

Related Institution

Guinan Desert Ecosystem Positioning Observation and Research Station

Ministry of;Education Field Scientific Observation and Research Station for the Sanjiangyuan Ecosystem at Qinghai University

School of Geographical Sciences， Liaoning Normal University

CNPC Research Institute of Safety & Environment Technology

⁰