干旱区研究

干旱区研究 ›› 2012, Vol. 29 ›› Issue (4): 598-603.

• 水土资源 • 上一篇    下一篇

尕海4种湿地类型土壤水分特性研究

 王元峰1, 王辉1, 马维伟1, 冯宜明1, 李俊臻2   

    1.  甘肃农业大学林学院，甘肃 兰州 730070；
    2. 甘肃尕海则岔自然保护区管理局，甘肃 碌曲 747200
  • 收稿日期:2011-07-11 修回日期:2011-10-29 出版日期:2012-07-15 发布日期:2012-09-11
  • 通讯作者: 王辉.Email：wangh@gsau.edu.cn
  • 作者简介:王元峰（1986-），男，在读硕士，研究方向为湿地土壤理化性质和湿地功能评价.Email:dzwangyuanfeng@163.com
  • 基金资助:

    甘肃省教育厅科研项目“尕海湿地生态退化机理研究”（2008-3-26）

Soil Moisture Properties in Four Types of Wetland in Gahai

 WANG  Yuan-Feng1, WANG  Hui1, MA  Wei-Wei1, FENG  Yi-Ming1, LI  Jun-Zhen2   

  1. 1.   College of Forestry, Gansu Agricultural University, Lanzhou 730070, China;
    2.   Gahai Zecha National Nature Reserve Administration, Luqu County 747200, Gansu, China
  • Received:2011-07-11 Revised:2011-10-29 Online:2012-07-15 Published:2012-09-11

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被引次数

25

摘要： 对尕海草本泥炭地、沼泽湿地、高山湿地和洪泛湿地的土壤含水量、容重、孔隙度、持水量及贮水量等物理性质进行了研究。研究结果表明：① 草本泥炭地、沼泽湿地、高山湿地和洪泛湿地土壤含水量分别为225.13%、159.46%、179.47%、111.78%；② 4种湿地类型土壤的容重随土层深度的增加而增加，在0～80 cm土层，草本泥炭地、沼泽湿地、高山湿地和洪泛湿地的土壤容重平均值分别为0.89 g/cm3、1.17 g/cm3、1.11 g/cm3、1.18 g/cm3；③ 4种湿地类型土壤毛管孔隙度、非毛管孔隙度、饱和持水量、毛管持水量和贮水能力随土层深度增加而逐渐减小；④ 在草本泥炭地、沼泽湿地、高山湿地和洪泛湿地中，土壤的毛管持水量分别是土壤自身重量的2.50、1.51、1.00、1.78倍，饱和持水量分别是土壤自身重量的2.83、1.81、1.25、2.08倍；⑤ 4种不同湿地类型中，草本泥炭地的土壤较疏松、孔隙度大、通气性好、持水和蓄水能力强。

关键词: 湿地, 土壤水分, 土壤容重, 孔隙度, 土壤持水性, 尕海

Abstract:  In this paper, the soil moisture content, soil bulk density, soil porosity, retention capacity of soil water and soil water storage of peatland, marsh wetland, mountains wetland and flood wetland in Gahai were researched. The results are as follows: (1) The soil moisture contents in peatland, marsh wetland, mountains wetland and flood wetland were 225.13%, 159.46%, 179.47% and 111.78% respectively; (2) The soil bulk density of four types of wetland increased with the increase of soil depth. In soil layer of 0-80 cm, the soil bulk densities of peatland, marsh wetland, mountains wetland and flood wetland were 0.89 g/cm3, 1.17 g/cm3, 1.11 g/cm3and 1.18 g/cm3 respectively; (3) In four types of wetland, the soil capillary porosity, non-capillary porosity, retention capacity of saturated soil water, retention capacity of soil water and soil water storage were decreased gradually with the increase of soil depth; (4) In peatland, marsh wetland, mountains wetland and flood wetland, retention capacities of soil capillary water were 2.50, 1.51, 1.00 and 1.78 times of soil weight, and retention capacity of saturated soil water were 2.83, 1.81, 1.25 and 2.08 times of soil weight, respectively; (5) In four types wetland, soil in peatland was looser, its porosity was larger, its ventilation was better, and retention and storage of soil water storage was higher than those of others.

Key words: wetland, soil moisture content, soil porosity, bulk density, retention capacity of soil water, Gahai