基于遥感的咸海盆地土地利用、土壤和植被状况、作物生产和灌溉系统用水评估。回顾

Q1 Earth and Planetary Sciences
Christopher Conrad , Muhammad Usman , Lucia Morper-Busch , Sarah Schönbrodt-Stitt
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引用次数: 21

摘要

咸海盆地(ASB)的灌溉农业通常以其高用水量,低效的水管理和功能失调的灌溉和排水基础设施而闻名。自1991年以来,有6个国家在咸海盆地(ASB)、阿富汗、哈萨克斯坦、吉尔吉斯斯坦、塔吉克斯坦、土库曼斯坦和乌兹别克斯坦开展了集约化灌溉农业。在该地区,灌溉农业普遍以耗水量高、水管理效率低、灌溉和排水基础设施功能失调而闻名。广泛的土地退化(例如土壤盐碱化)被认为是灌溉部门管理不善的主要结果,迫切需要可持续的解决办法。本研究分析了基于卫星遥感(RS)产品和方法的国际同行评议的科学研究,探讨了非洲东部地区灌溉用水和土地管理的潜在改进。以2015年至2019年在德国中亚水倡议(CAWa)框架下开发的在线工具WUEMoCA为例,讨论了将基于rs的知识转化为实践的方法。在2008-2019年期间,共有49项研究提供了关于非洲沙漠地区土地利用、土壤和植被、作物生产和灌溉用水的知识。RS的使用揭示了农业生产多样化程度的增加、土地退化的时空格局以及不同水分有效性对种植强度的影响。不同尺度(即从农场到省的尺度)的作物产量和蒸散量模型强调了ASB相对中等的水分生产力。一个相关的未来研究任务是集中收集现场数据进行验证和二次数据,从而减轻这种情况。特别是,改善社会生态和经济信息有助于更好地了解土壤和土地退化的空间差异驱动因素。最终,本研究为决策提供了相关的信息和数据来源,并要求使用WUEMoCA等在线工具更好地将RS-based信息整合到实践中。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Remote sensing-based assessments of land use, soil and vegetation status, crop production and water use in irrigation systems of the Aral Sea Basin. A review

Irrigated agriculture In the Aral Sea Basin (ASB) is commonly known for its high water consumption, inefficient water management, and dysfunctional irrigation and drainage infrastructure. Since 1991, six states have been engaged in intensive irrigated agriculture in the Aral Sea Basin (ASB), Afghanistan, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan. In this region, irrigated agriculture is commonly known for its high water consumption, inefficient water management, and dysfunctional irrigation and drainage infrastructure. Extensive land degradation (e.g., soil salinization) is considered as the main result of mismanagement in the irrigation sector and sustainable solutions are urgently required. This study analysed international peer-reviewed scientific studies based on satellite remote sensing (RS) products and methods addressing potential improvements of irrigation water and land management in the ASB. Ways to transfer RS-based knowledge into practice were discussed using the example of the online tool WUEMoCA that was developed from 2015 to 2019 within the German Water Initiative in Central Asia (CAWa). For the period 2008–2019, a total of 49 studies contributed knowledge about land use, soils and vegetation, crop production and use of irrigation water in the ASB. The use of RS revealed increased diversification of agricultural production, spatial-temporal patterns of land degradation, and effects of varying water availability on cropping intensity. Modelling of crop yields and evapotranspiration at varying scales (i.e., farm to provincial scale) underlined the comparably moderate water productivity in the ASB. One relevant future research task is to intensively collect in-situ data for validation and secondary data and hence to mitigate the situation. In particular, improved socio-ecological and economic information could help to better understand the spatially differing drivers of soil and land degradation. Eventually, this study provides relevant information and data sources for decision-making and requirements for better integration of RS-based information into practice using online-tools like WUEMoCA.

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来源期刊
Water Security
Water Security Earth and Planetary Sciences-Oceanography
CiteScore
8.50
自引率
0.00%
发文量
17
期刊介绍: Water Security aims to publish papers that contribute to a better understanding of the economic, social, biophysical, technological, and institutional influencers of current and future global water security. At the same time the journal intends to stimulate debate, backed by science, with strong interdisciplinary connections. The goal is to publish concise and timely reviews and synthesis articles about research covering the following elements of water security: -Shortage- Flooding- Governance- Health and Sanitation
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