| 河西走廊干旱荒漠区盐碱化土地修复与调控研究--以石羊河灌区为例 |
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| 引用本文： | 刘金荣,谢晓蓉,金自学,秦嘉海.河西走廊干旱荒漠区盐碱化土地修复与调控研究--以石羊河灌区为例[J].中国地质灾害与防治学报,2005,16(4):89-92. |
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| 作者姓名： | 刘金荣 谢晓蓉 金自学 秦嘉海 |
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| 作者单位： | 1. 河西学院生物系,西部资源环境化学重点实验室,甘肃,张掖,734000
2. 绍兴文理学院生物系,浙江,绍兴,312000;河西学院生物系,西部资源环境化学重点实验室,甘肃,张掖,734000 |
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| 基金项目： | 国家自然科学基金资助项目（40235053） |
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| 摘 要： | 近年来，由于自然因素和人为因素的共同作用，石羊河灌区盐碱化土地面积逐年增加，盐碱化程度不断加深，严重影响到该区国民经济、社会和生态环境的可持续发展。文章分析了造成石羊河灌区盐碱化的自然因素和人为因素．认为自然因素主要是：①．气候干旱，降水稀少，蒸发量强烈；②．水资源量逐年减少；③．地势上位于我国现代地形的第二阶梯，为内陆河流；④．地下水质矿化度高。人为因素是：①．过度开荒，灌区大量超采地下水；②．植被大量减少，加剧了土地盐碱化；③．灌溉技术落后，有灌无排。同时从四个方面探索建立了科学合理的石羊河灌区盐碱化土地综合调控措施：①．水资源合理配置；②．以水盐平衡理论为指导，调控地上水位和盐分的时空分布；③．加强以节水灌溉为核心的灌区配套建设，推广节水防盐的灌水技术；④．扩大牧草种植，逐步实现农业三元结构。
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| 关 键 词： | 石羊河灌区 土地盐碱化 修复 综合调控措施 甘肃省 节水防盐灌溉技术 |
| 文章编号： | 1003-8035（2005）04-0089-04 |
| 收稿时间： | 2004-12-23 |
| 修稿时间： | 2005-01-21 |
Study on the recovery and control of the saline-alkali lands in irrigated area --an example in Shiyang River irrigated area, Gansu Province |
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| Liu jin-rong,XIE xiao-rong,JIN zi-xue,QIN Jia-Hai.Study on the recovery and control of the saline-alkali lands in irrigated area --an example in Shiyang River irrigated area, Gansu Province[J].The Chinese Journal of Geological Hazard and Control,2005,16(4):89-92. |
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| Authors: | Liu jin-rong XIE xiao-rong JIN zi-xue QIN Jia-Hai |
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| Abstract: | In recent years,due to the natural and human coactivities,the proportion of saline-alkali land kept increasing and the salinization became more and more serious,which disturb the sustainable development of the local economy,society and ecological environment.This article provides a detailed analysis on the natural and human factors which caused the salinization of Shiyang River irrigated area.The main natural factors are: 1.the dry weather,low rainfall and high eveporation;2.decreasing water resources;3.ShiYang River is a continental river;4.there is a high content of mineral elements in the groundwater.The man made factors are:1.over reclaiming of wasteland,the over-exploitation of groundwater.2.the decrease of vegetation makes the salinization more serious;3.the backward irrigating techniques,only irrigating but no drainage.Finally,the authors provides four sythetical and feasible measuers for the control of salinization in ShiYang irrigating area: 1.reasonable disposition of water resources;2.take the water-saline balance theory as guiding theory,control the temporal and spatial distribution of water and saline in the surface water;3.strengthen the auxiliary constructions,in irrigation to save water,and spreading the water-saving and saline-resistant irrigation techniques;4.enlarge the area of grassland,and realize the trialism in agriculture. |
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| Keywords: | Shiyang River Irrigated Area land salinization recovery synthecicol control measure Gansu Province watersaving and saline-controlhng irrigation lechnique |
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