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报道江苏里下河地区农业科学研究所

深化南北科技协作 共促智慧节水农业发展——河北省水资源研究与水利技术试验推广中心一行到江苏里下河所调研交流

9-21 河北省水资源研究与水利技术试验推广中心(河北省灌溉中心试验站)副主任贾志军一行3人来江苏里下河地区农业科学研究所调研交流。调研组一行在资源与环境研究室主任寇祥明等陪同下,实地考察樊川基地,现场观摩智慧灌溉、虫情监测及土壤墒情在线监测等智慧农业应用场景。双方围绕农业水资源高效利用、智慧灌溉技术研发及科研基地建设等主题进行深入交流,重点围绕深化南北区域农业节水科技协作达成共识,一致认为应充分发挥各自在农业水资源利用、稻麦栽培和智慧农业等方面的科研与平台优势,协同开展黄淮海地区和里下河地区稻麦高效节水智慧灌溉技术研究,探索构建适应不同生态区的智慧灌溉技术模式与技术标准。

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论文Sustainability一手来源

Influence of Water Body Change Drivers Using Boosted Regression Trees: Songhua Water Resource Region

This study analyzed the spatiotemporal evolution of water areas based on land use data interpreted from remote sensing imagery of the Songhua Water Resource Region from 1980 to 2020. The Boosted Regression Tree model was employed to evaluate the relative influence (RI) and partial dependence (PD) of four categories of factors: hydrometeorological fluctuations, hydraulic engineering construction, agricultural development intensity, and socioeconomic changes. The results showed that: (1) The water area exhibited an overall shrinking trend, decreasing by 26,573 km2 over 40 years, with a dynamic rate of −31.10%. All sub-regions experienced shrinkage, with the Sanjiang Plain suffering the largest loss and the Heilongjiang Mainstream Basin showing the greatest relative decline. (2) Agricultural development intensity had the highest comprehensive RI (41.7%), and sown area had the highest single-factor RI (26.6%). Among sub-regions, the highest RI values were observed for hydraulic engineering in the Erguna River Basin region, agricultural development in the Changbai Mountain Basin region, and socioeconomic factors in the Heilongjiang Mainstream Basin region. (3) Cultivated land area, temperature, grain yield, the proportion of primary industry GDP, and levee length all exhibited inflection points, beyond which they positively drove water area shrinkage; reference evapotranspiration and urbanization rate showed opposite trends. This study can provide a reference for aquatic ecological protection and rational water resource utilization in the Songhua Water Resource Region.

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该研究用提升回归树量化四类驱动因子,发现农业开发强度综合相对影响达41.7%、播种面积单因子达26.6%,并给出耕地面积、气温、粮食产量等因子的驱动方向拐点,可作为松花江流域水域保护优先序的参考,但结论限于该区域。

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报道农业农村部发展规划司

甘肃省:先行先试 探索新路 扎实推进新一轮农业资源区划

甘肃以金昌为先行点推进新一轮农业资源区划,形成《甘肃省农业资源调查与评价技术规程》等省级规程标准,统一数据口径与评价程序,并已启动武威、定西等地先行先试。区划成果与节水抗旱、农田质量提升、面源污染治理衔接,为全国推开积累经验。

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