Spatiotemporal differentiation of changes in wheat phenology in China under climate change from 1981 to 2010
Spatiotemporal differentiation of changes in wheat phenology in China under climate change from 1981 to 2010
复制标题
1981-2010年气候变化下中国小麦物候变化的时空分异
DOI：
10.1007/s11430-017-9149-0
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发表时间：
2018-06
期刊：
影响因子：
--
通讯作者：
Dai Junhu
中科院分区：
文献类型：
--
作者：
Liu Yujie;Chen Qiaomin;Ge Quansheng;Dai Junhu
物候是反映气候变化的可靠生物指标。对作物物候变化及其驱动机制的研究对于指导区域农业活动适应气候变化至关重要。由于缺乏基于连续长期观测的记录，在全国范围内对整个生长季多个连续物候期变化的研究很少，特别是关于物候变化的时空分异。利用中国48个农业气象台站1981-2010年的小麦物候资料，对10个物候期的时空变化和小麦生育期长度进行了定量分析。结果表明，1981 - 2010年，气候和小麦物候在生长季发生了显著变化。平均而言，在全国范围内，播种日期（0.19 d a-1），羽化（0.06 d a-1），三叶草（0.05 d a-1），乳熟（0.06d a-1）表现出延迟趋势，而分蘖期则表现出延迟趋势（-0.02 d a-1）、拔节期（-0.15 d a-1）、孕穗期（-0.21 d a-1）、抽穗期（-0.17 d a-1）、开花期（-0.19 d a-1）、成熟期（-0.10 d a-1）呈提前趋势。此外，营养生长期和生长季节分别缩短了0.23和0.29 d a-1，而生殖生长期延长了0.06 d a-1。在小麦种植区，物候期或生长期长度的日期变化趋势各不相同。此外，春小麦和冬小麦生长季长度（GSL）对生长季气候因子变化的敏感性时空差异显着。春（冬）小麦的GSL随生长季平均气温的升高而降低（升高）。在所有小麦种植区，生长季总降水量和日照时数的增加都使小麦的总光合速率增加。尤其是春小麦GSL对降水的敏感性弱于冬小麦，而对日照时数的敏感性强于冬小麦。认识物候变化的时空分异及其对各种气候因子的响应，将为农业生产决策提供科学依据。
Phenology is a reliable biological indicator for reflecting climate change. An examination of changes in crop phenology and the mechanisms driving them is critical for guiding regional agricultural activities in attempts to adapt to climate change. Due to a lack of records based on continuous long-term observation, studies on changes in multiple consecutive phenological stages throughout a whole growing season on a national scale are rarely found, especially with regard to the spatiotemporal differentiation of phenological changes. Using a long-term dataset (1981-2010) of wheat phenology collected from 48 agro-meteorological stations in China, we qualified the spatiotemporal changes of 10 phenological stages as well as the length of wheat growth phases. Results showed that climate and wheat phenology changed significantly during the growing seasons from 1981 to 2010. On average, on a national scale, dates of sowing (0.19 d a-1), emergence (0.06 d a-1), trefoil (0.05 d a-1), and milk ripe (0.06 d a-1) showed a delaying trend, whereas dates of tillering (-0.02 d a-1), jointing (-0.15 d a-1), booting (-0.21 d a-1), heading (-0.17 d a-1), anthesis (-0.19 d a-1), and maturity (-0.10 d a-1) showed an advancing trend. Furthermore, the vegetative growth phase and growing season were shortened by 0.23 and 0.29 d a-1, respectively, whereas the reproductive growth phase was lengthened by 0.06 d a-1. Trends in dates of phenological stages or length of growing phases varied across wheat-planting regions. Moreover, spatiotemporal differentiation of sensitivity in growing season length (GSL) to variations in climatic factors during the growing season between spring and winter wheat were remarkable. The GSL of spring (winter) wheat decreased (increased) with an increase in average temperature during the growing season. In all wheat-planting regions, the GSL increased with the increasing of total precipitation and sunshine duration during the growing season. In particular, the sensitivity of GSL to precipitation for spring wheat was weaker than for winter wheat, while the sensitivity of GSL to sunshine duration for spring wheat was stronger than for winter wheat. Recognition of the spatiotemporal differentiation of phenological changes and their response to various climatic factors will provide scientific support for decision-making in agricultural production.
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影响因子：
6.2
作者：
S. Siebert;F. Ewert
通讯作者：
S. Siebert;F. Ewert
影响因子：
6.2
作者：
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通讯作者：
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影响因子：
4.8
作者：
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通讯作者：
Jen-Yu Wang
影响因子：
--
作者：
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李正国 Li Zhengguo;杨鹏 Yang Peng;唐华俊 Tang Huajun;吴文斌 Wu Wenbin;陈仲新 Chen Zhongxin;刘佳 Liu Jia;张利 Zhang Li;谭杰扬 Tan Jieyang;唐鹏钦 Tang Pengqin
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影响因子：
5.2
作者：
Tao, Fulu;Zhang, Shuai;Zhang, Zhao
通讯作者：
Zhang, Zhao