Subjects: Other Disciplines >> Synthetic discipline submitted time 2017-02-10 Cooperative journals: 《中国科学院院刊》
Abstract：三江源区地处青藏高原腹地，是长江、黄河、澜沧江的发源地，被誉为“中华水塔”。近几十年，由于受到气候变化与人类活动的共同影响，三江源区生态系统持续退化，严重威胁着三大江河中下游地区的生态安全与可持续发展。为了遏制生态系统的持续恶化，我国于2005年开始实施三江源区生态保护和建设一期工程。文章针对三江源生态保护和建设一期工程规划目标，开展了三江源区生态系统状况与变化趋势及其驱动机制的监测评估，以及生态工程生态成效的综合评估。结果表明：通过三江源生态保护和建设一期工程的实施，区域生态系统总体表现出“初步遏制，局部好转”的态势，取得了显著生态成效，预期目标基本实现。然而，区域生态系统的健康状况远未达到理想的状态，必须扩大范围，长期坚持，方能实现“整体恢复，全面好转，生态健康，功能稳定”的最终目标。
Subjects: Statistics >> Social Statistics submitted time 2024-03-27 Cooperative journals: 《中国科学院院刊》
Abstract： The demographic reality of a large population and limited land resources in China necessitates the implementation of the world’s most stringent cultivated land protection system. Effective, timely, and accurate monitoring of the status of cultivated land protection red line is essential to ensuring cultivated land protection and food security. The development of cutting-edge technologies such as remote sensing big data, cloud computing, and artificial intelligence has provided new opportunities for cultivated land control and monitoring. This article systematically elaborates on the current research status and challenges in the field of cultivated land protection redline control and monitoring, including the establishment of the monitoring object system, the availability of remote sensing data, the accuracy, and timeliness of monitoring results, and other related issues. It introduces advanced technologies and prospects for big data technology in cultivated land redline monitoring and proposes innovative technical solutions for cultivated land redline monitoring. The article also discusses the challenges faced in achieving this paradigm shift in research and provides corresponding recommendations on the connotations of cultivated land protection, delineation of basic land units, and the construction of monitoring networks for implementing national land spatial planning.
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