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| Effect of temperature on water content and vegetation growing in coal waste pile: A case study in Yangquan City of Shanxi Province |
| Zheng Guoqiang<sup>1</sup>,Zhang Chengliang<sup>2</sup>,Zhang Hongjiang<sup>1</sup>,Wang Wei<sup>1</sup>,Li Meisheng<sup>3</sup>,Zhang Yong<sup>3</sup> |
| 1.College of Soil and Water Conservation,Beijing Forestry University,Key Lab.of Soil & Water Conservation and Combating Desertification,Ministry of Education,100083,Beijing;2.Shanxi Lvbao Garden Institute,030006,Taiyuan;3.Shanxi Guoyang New Energy Co.Ltd,045000,Yangquan,Shanxi: China |
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Abstract Based on the methods of field survey,experiment,sampling and the laboratory analyzes in coal waste piles in Yangquan of Shanxi Province,the effect of temperature on water content and vegetation growing was studied.The results showed that temperature in vertical direction increased by depth,opposited to natural land,which changed larger in coal waste pile covered by soil than nature restoration coal waste pile.The temperature increase of adjacent two levels(10 cm) in vertical direction from 0-80 cm in natural restoration,earth-sheltered 50 cm and 100 cm coal waste piles are 0.68 ℃,2.20 ℃ and 2.97 ℃.The water content is decreasing with the temperature increasing in vertical direction in earth-sheltered coal waste pile,which is higher 10%-15% than natural restoration in average.The vegetation which suit grow in coal waste pile in Yangquan of Shanxi Province contain <i>Chenopodium glaucum</i>,<i>Artemisia capillaries</i>,<i>Tribulus terrestris</i>,<i>Portulaca oleracea</i>,<i>Artemisia hedinii</i>,<i>Setaria viridis</i>,<i>Astragalus adsurgens & Bidens bipinnata</i>.The descending order of sensitivity to temperature of four vegetation is <i>Amorpha fruiticos</i>,<i>Robinia pseudoacacia</i>,<i>Ailanthus alltissima</i>,and <i>Platycladus orientalis</i>.
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Received: 17 October 2007
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