| 孟秦倩,王健,吴发启.黄土高原坡面刺槐林土壤水分环境的研究[J].干旱地区农业研究,2008,(4):28~32 |
| 黄土高原坡面刺槐林土壤水分环境的研究 |
| Slope soil moisture environment of acacia-forestland of the Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2008.04.06 |
| 中文关键词: 刺槐林 黄土高原 土壤含水量 |
| 英文关键词:acacia-forest loess plateau soil moisture |
| 基金项目:中科院知识创新项目(KZCX2-XB2-05-01)； 西北农林科技大学青年科研专项 |
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| 中文摘要: |
| 在测定黄土高原淳化、延安和米脂坡面刺槐林以及坡面农田不同深度土壤含水量的基础上,分析了坡面刺槐林土壤水分环境特点。结果表明:淳化、延安和米脂刺槐林地土壤水分含量较农地分别低8.5%、31.2%和34.2%;淳化土壤水分含量高于米脂坡面土壤水分含量,延安介于二者之间;坡面土壤水分含量随林分密度、林龄的增加而降低,同时阴坡土壤水分含量明显高于阳坡,在连续干旱时仅有表层040 cm土壤水分含量受降水影响呈现出一定的波动,而100~200 cm土壤水分呈现持续消耗,深层几乎不受季节的影响。 |
| 英文摘要: |
| Based on the measurement of soil moisture in different depths for slope acacia-forestland and slope farmland of Chunhua County Yan’an Prefecture and Mizhi County of Shaanxi Province in China’a Loess Plateau the soil moisture environment characters for slope acacia-forestland is analyzed subsequently．The results show that the soil moisture content of slope forestland is less than slope-farmland from 8．5％， 31．2％ to 34．2％ separately in Chunhua Yan’an and Mizhi．The results indicate that the soil moisture content of Chunhua is little higher than Yan’an and Mizhi．With the increase of stand density and age slope soil moisture content gets lower．Also the soil moisture of shadow side is obviously higher than that of the sunny side．Only the soil moisture in 0～40 cm depth from the soil surface should be influenced and fluctuated by the precipitation in the satiation of a continual drought season while the 100～200 cm depth soil moisture under soil surface takes on a successive depletion and the depth can not be influenced. |
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