| 不同因素影响下突发性强降雨对沙拐枣的危害——以塔里木沙漠公路防护林生态工程为例 |
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| 引用本文： | 张建国,徐新文,雷加强,李生宇.不同因素影响下突发性强降雨对沙拐枣的危害——以塔里木沙漠公路防护林生态工程为例[J].干旱区地理,2009,32(3). |
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| 作者姓名： | 张建国 徐新文 雷加强 李生宇 |
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| 作者单位： | 1. 中国科学院新疆生态与地理研究所,新疆,乌鲁木齐,830011;中国科学院研究生院,北京,100039
2. 中国科学院新疆生态与地理研究所,新疆,乌鲁木齐,830011 |
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| 基金项目： | 中国科学院重要方向性项目，国家科技攻关西部开发行动项目，国家自然科学基金，中国科学院两部之光人才培养计划项目 |
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| 摘 要： | 塔里木沙漠公路防护林生态工程全长436 km,造林树种以抗逆性较强的沙拐枣(Calligo-num L.)、柽柳(Tamarix L.)、梭梭(Haloxylon Bunge)等优良防风固沙灌木为主,采用高矿化度地下水滴灌.2005年5月,公路沿线出现了罕见的突发性强降雨,由此引起的表层土壤盐分淋溶造成了沙拐枣大量死亡.本研究采用线路调查和随机抽样方法,在突发性强降雨后对塔里木沙漠公路防护林带内沙拐枣死亡率进行了调查,并对调查结果及其原因进行了分析,结果表明:沙拐枣死亡率(1)随林龄的增加而减小;(2)随矿化度的升高而增大;(3)垄间平沙地>过渡区>高大沙垄垄体;(4)林带中央>公路旁>林带外围.
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| 关 键 词： | 突发性强降雨 咸水滴灌 盐分淋溶 沙拐枣死亡率 |
Injury of unexpected strong precipitation to Calligonum under different factors:a cast of the shelterbelt eco-project along the Tarim Desert highway |
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| ZHANG Jian-guo,XU Xin-wen,LEI Jia-qiang,LI Sheng-yu.Injury of unexpected strong precipitation to Calligonum under different factors:a cast of the shelterbelt eco-project along the Tarim Desert highway[J].Arid Land Geography,2009,32(3). |
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| Authors: | ZHANG Jian-guo XU Xin-wen LEI Jia-qiang LI Sheng-yu |
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| Institution: | ZHANG Jian-guo~(1,2),XU Xin-wen~1,LEI Jia-qiang~1,LI Sheng-yu~1 (1 Xinjiang Institute of Ecology and Geography,CAS,Urumqi 830011,Xinjiang,China,2 Graduate University of Chinese Academy of Sciences,Beijing 100039,China) |
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| Abstract: | The shelterbelt eco-project along the Tarim Desert highway is 436 kilometers long,which is drip-irrigated with high saline groundwater.Its main afforestation species are Tamarix,Calligonum,and Haloxylon,which are good windbreak and sand fixation trees with strong salt-resistance,strong drought-resistance,blown-sand-resistance, et al.Because of strong soil evaporation and strong capillarity in such extreme arid environment in the Taklimakan Desert,soil salt from irrigation moves upwards with soil water and a... |
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| Keywords: | the shelterbelt eco-project along the Tarim Desert Highway unexpected strong precipitation drip-irrigation with saline water salt leaching mortality of Calligonum |
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