DOI: 10.1002/joc.5833
Scopus记录号: 2-s2.0-85052915274
论文题名: Extended warm temperate zone and opportunities for cropping system change in the Loess Plateau of China
作者: Liu Z. ; Liu Y. ; Li Y.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 2 起始页码: 658
结束页码: 669
语种: 英语
英文关键词: annual accumulated temperature
; climate warming
; cropping systems
; land use
; Loess Plateau
Scopus关键词: Crops
; Land use
; Landforms
; Sediments
; Water resources
; Accumulated temperatures
; Agricultural management
; Agriculture development
; Climate warming
; Cropping systems
; Increased temperature
; Loess Plateau
; Loess plateau of chinas
; Climate change
; agricultural development
; air temperature
; climate change
; cropping practice
; land use
; seasonal variation
; warming
; China
; Loess Plateau
英文摘要: Thermal condition changes largely affect crop phenology, cropping systems and crop field. In this study, we used long-term (1961–2015) annual accumulated temperature ≥10 °C (AAT10) derived from daily gridded air temperature to investigate the potential implication of AAT10 changes for regional agriculture development in the Loess Plateau (LP). Results showed that an elevation-dependent spatial pattern of AAT10 was observed. Southeastern LP with low elevation had higher AAT10 and western LP with high elevation had lower AAT10. Across the LP, the start date of 5-day moving average temperature ((Formula presented.)) ≥10 °C (SDT10) showed significantly advanced trends (p < 0.05), and length of durations of (Formula presented.) ≥ 10 °C (LDT10) and AAT10 both showed significantly increased trends (p < 0.05) in the past 55 years. Yet significantly delayed end date of (Formula presented.) ≥ 10 °C (EDT10) was not observed. Compared with EDT10, STD10 contributed more to variations of LDT10 (R 2 = 0.76, p < 0.01) and AAT10 (R 2 = 0.64, p < 0.01). Besides, this study found that increased temperature in corresponding LDT10 was also responsible for AAT10 increase. Spring temperature contributed more to AAT10 increase relative to autumn and summer temperature. Importantly, area of warm temperate zone (AAT10 ranging 3,400–4,500 °C·day) across LP increased from 21.0% in 1960s to 50.3% in 2000–2015 due to climate change. These findings suggest that most LP, especially in regions with good soil conditions and sufficient water resources, had a large potential to develop new cropping systems with two crops per year, which will be helpful for optimizing regional land use and providing decisions on agricultural management. © 2018 Royal Meteorological Society
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116590
Appears in Collections: 全球变化的国际研究计划
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作者单位: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Liu Z.,Liu Y.,Li Y.. Extended warm temperate zone and opportunities for cropping system change in the Loess Plateau of China[J]. International Journal of Climatology,2019-01-01,39(2)