气候变化对黄土高原丘陵区制干红枣适生区影响预估
发布时间:2018-03-01 21:29
本文关键词: 红枣 气候变化 适生区 GIS 黄土高原丘陵区 出处:《西北农林科技大学学报(自然科学版)》2017年01期 论文类型:期刊论文
【摘要】:【目的】预估未来黄土高原丘陵区红枣种植气候资源与适生区空间分布的变化,为气候变化对陕晋黄河沿岸红枣生产的影响和产业可持续发展提供科学依据。【方法】基于GIS技术,利用RCP4.5和RCP8.5排放气候情景下气候变化预估数据,对未来35年(2016-2050年)黄土高原丘陵区红枣种植气候资源和适生区空间分布的变化进行预估,并与基准期(1985-2014年)进行对照分析。【结果】与基准期相比,预计未来黄土高原红枣产区增温明显,年平均气温升高1℃左右;年平均降水量和红枣脆熟-采收期降水量均有所增加,大部分地区增幅为100mm和20mm左右;红枣花期降水量除南部地区增加较明显外,大部地区为持平略增;黄土高原丘陵区红枣气候适宜种植区面积明显减少,次适宜区面积增加,其中南部区域可能变为气候不适宜区。【结论】陕晋黄河沿岸北部适宜区可根据地形特点,充分挖掘气候资源潜力,适当扩大适应本地发展的制干红枣栽植面积;中部黄河两岸次适宜区应及时进行抗裂果品种改良,采取提前或推迟枣果成熟期、枣果套袋等措施减轻灾害性天气的影响与危害;南部次适宜区应及时进行产业结构调整,促进地方特色农业产业可持续发展。
[Abstract]:[objective] to estimate the changes of planting climate resources and spatial distribution of jujube in hilly region of Loess Plateau in the future. This paper provides a scientific basis for the influence of climate change on the production of jujube and the sustainable development of industry along the Yellow River. [methods] based on GIS technology, the predicted data of climate change under RCP4.5 and RCP8.5 emission climate scenarios are used. The changes of planting climate resources and spatial distribution of jujube in hilly region of the Loess Plateau from 2016 to 2050 in the next 35 years were estimated and compared with those in the base period (1985-2014). [results] compared with the base period, It is estimated that the annual average temperature will increase by 1 鈩,
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