浙江慈溪慈东滨海区盐碱地绿化技术与成效分析研究
发布时间：2018-07-24 15:23
【摘要】：盐碱地作为中国一种分布较为广泛的土壤类型,主要分布在东北、华北、西北内陆地区及中国沿海区域。因其土壤的特殊性质,盐碱地的利用率相对较低,但在土地资源日益稀缺的今天,加快盐碱地的开发利用显的尤为重要。对于盐碱地绿化,目前国内外尚未完全攻克这一难题,而国内针对盐碱地绿化也提出了许多盐碱地绿化改良技术,但不同地区对相同的改良方法都表现出了不同的效果。本文以具有典型杭州湾沿岸盐碱地特性的慈溪慈东滨海区为研究对象,针对慈东滨海区近年来在盐碱地绿化施工技术上所做的尝试,选择具有可比性的样本,对客土回填抬基,添加土壤改良介质和增加土壤隔离层这三种盐碱地绿化施工技术进行分析比较。作者本人通过实地调查与数据采集比较后发现,采用了隔离法的绿化工程,在工程竣工后的几年内,无论是乔木、灌木以及土壤的理化性质均要优于未采用的隔离层法的其它两项工程。在对土壤pH与TDS值的测量比较中,增加了隔离层法的绿化工程土壤未出现明显的返碱返盐现象,而其它两项工程都发生了次生盐碱化现象,特别是返碱现象尤为突出。本文通过对于慈东滨海区工程实地的试验与分析,结合其它地区在盐碱地绿化上的成功案例与实际经验,建议慈东滨海区在重要景观节点处的绿化工程采用隔离层法作为改良方法,并按照景观要求选择适宜的改良方法。此外,建议有着大面积绿化需求的滨海区能够设立自己的盐碱地引种筛选试验场并培育盐碱地原生苗。希望这些建议能够提高慈东滨海区盐碱地绿化的景观形象,同时为有着类似滨海盐碱成因的环杭州湾地区的盐碱地绿化造景提供参考与借鉴。
[Abstract]:As a widely distributed soil type in China, saline-alkali land is mainly distributed in Northeast China, North China, the inland areas of Northwest China and the coastal areas of China. The utilization rate of saline-alkali land is relatively low because of its special soil properties, but it is particularly important to accelerate the exploitation and utilization of saline-alkali land in the present day when land resources are increasingly scarce. At present, the problem of saline-alkali land greening has not been solved completely at home and abroad, and many improvement techniques for saline-alkali land greening have been put forward in our country, but different areas have different effects on the same improvement methods. In this paper, the typical saline-alkali land along the coast of Hangzhou Bay is taken as the research object. In view of the attempts made in recent years in the construction technology of saline-alkali land in the coastal area of Cixi, a comparative sample is selected to carry the base back to the guest soil. The greening construction techniques of saline-alkali soil were analyzed and compared by adding soil improvement medium and increasing soil isolation layer. Through the field investigation and data collection comparison, the author found that the greening project adopted the isolation method, in the years after the completion of the project, no matter the tree, The physicochemical properties of shrub and soil were superior to those of the other two projects. In the comparison of soil pH and TDS value, no obvious phenomenon of soil salinization occurred in the greening project with the addition of isolation layer method, while the secondary salinization phenomenon occurred in the other two projects, especially the phenomenon of returning alkali. Based on the field test and analysis of the Cidong Binhai area project, this paper combines the successful cases and practical experiences of other areas in the greening of saline-alkali land. It is suggested that the isolation layer method should be used in the greening project at the important landscape nodes in the Cedong Binhai area, and the suitable improvement method should be selected according to the landscape requirements. In addition, it is suggested that the coastal area with large green demand should set up its own test ground for introduction and screening of saline-alkali soil and cultivate the original seedlings in saline-alkali land. It is hoped that these suggestions can improve the landscape image of saline-alkali land in the coastal area of Cidong, and provide reference and reference for the greening and landscaping of the saline and alkaline land in the Huanzhou Bay area similar to the origin of the coastal salinization and alkali-alkali at the same time.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S728.5
本文编号：2141808
[Abstract]:As a widely distributed soil type in China, saline-alkali land is mainly distributed in Northeast China, North China, the inland areas of Northwest China and the coastal areas of China. The utilization rate of saline-alkali land is relatively low because of its special soil properties, but it is particularly important to accelerate the exploitation and utilization of saline-alkali land in the present day when land resources are increasingly scarce. At present, the problem of saline-alkali land greening has not been solved completely at home and abroad, and many improvement techniques for saline-alkali land greening have been put forward in our country, but different areas have different effects on the same improvement methods. In this paper, the typical saline-alkali land along the coast of Hangzhou Bay is taken as the research object. In view of the attempts made in recent years in the construction technology of saline-alkali land in the coastal area of Cixi, a comparative sample is selected to carry the base back to the guest soil. The greening construction techniques of saline-alkali soil were analyzed and compared by adding soil improvement medium and increasing soil isolation layer. Through the field investigation and data collection comparison, the author found that the greening project adopted the isolation method, in the years after the completion of the project, no matter the tree, The physicochemical properties of shrub and soil were superior to those of the other two projects. In the comparison of soil pH and TDS value, no obvious phenomenon of soil salinization occurred in the greening project with the addition of isolation layer method, while the secondary salinization phenomenon occurred in the other two projects, especially the phenomenon of returning alkali. Based on the field test and analysis of the Cidong Binhai area project, this paper combines the successful cases and practical experiences of other areas in the greening of saline-alkali land. It is suggested that the isolation layer method should be used in the greening project at the important landscape nodes in the Cedong Binhai area, and the suitable improvement method should be selected according to the landscape requirements. In addition, it is suggested that the coastal area with large green demand should set up its own test ground for introduction and screening of saline-alkali soil and cultivate the original seedlings in saline-alkali land. It is hoped that these suggestions can improve the landscape image of saline-alkali land in the coastal area of Cidong, and provide reference and reference for the greening and landscaping of the saline and alkaline land in the Huanzhou Bay area similar to the origin of the coastal salinization and alkali-alkali at the same time.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S728.5
【参考文献】
相关期刊论文 前2条
1 刘贞;董文宇;周广柱;周燕;;滨海城市盐碱地园林绿化技术探讨[J];北方园艺;2008年04期
2 逄春浩，程维新，，张兴权，李运生，刘恩民;“强排强灌”改良重盐碱地及其人工生态系统稳定性的维持[J];地理学报;1996年01期
本文编号：2141808
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