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| Water storage capacity of different forested lands in Liupan Mountains in Ningxia |
| Zhang Yongli<sup>1</sup>,Wei Wenjun<sup>2</sup>,Leng Ling<sup>3</sup> |
| 1.Department of Science and Technology,State Forestry Administration,China,100714,Beijing;2.Forestry College,Inner Mongolia Agricultural University,010019,Hohhot;3.Institution of Forest Ecology,Environment and Protection,CAF,Forestry Ecology Environment Main Laboratory,State Forestry Administration,100091,Beijing:China |
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Abstract In order to estimate water conservation function of different forests in Liupan Mountains,researches on the characteristics of water storage capacity of forest litter and soil are carried out,they are <i>Larix principis-rupprechtii</i> pure plantation,<i>Quercus liaotungensis</i> pure natural forest,<i>Betula platyphylla</i> and <i>Populus davidiana</i> mixed natural forest,Pinus armandii and Betula albo-sinensis and Betula platyphlla mixed natural forest.Litter storage quantity is determined by square samples and its water retention capacity is determined by soaking in water.Soil physical properties related to water are measured by cutting ring and soaking in water.As to amount of water contained in litters,it showed that Pinus armandii and Betula albo-sinensis and Betula platyphlla mixed natural forest is the largest,<i>Larix principis-rupprechtii</i> pure plantation is larger,then is <i>Quercus liaotungensis</i> pure natural forest,finally is <i>Betula platyphylla</i> and <i>Populus davidiana</i> mixed natural forest.Undecomposed litters of <i>Larix principis-rupprechtii</i> pure plantation and half-decomposed litters of Pinus armandii and Betula albo-sinensis and Betula platyphlla mixed natural forest become saturated after 6 hours dripping in water and others all are 3 hours.As to maximum soil water storage amount,results showed that Pinus armandii and Betula albo-sinensis and Betula platyphlla mixed natural forest is the largest,<i>Quercus liaotungensis</i> pure natural forest is larger,then is <i>Larix principis-rupprechtii</i> pure plantation,finally is <i>Betula platyphylla</i> and <i>Populus davidiana</i> mixed natural forest.
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Received: 09 March 2007
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