Effects of climate variability and change on Chinese agriculture: a review

文献类型： 外文期刊

第一作者： Conway, Declan

作者： Conway, Declan;Li, Yue;Xiong, Wei;Gao, Qingzhu;Wu, Yanjuan;Wan, Yunfan;Li, Yan;Zhang, Silong

作者机构：

关键词： Climate variability;Climate change;Climate impacts;Agriculture Economic impacts;China

期刊名称：CLIMATE RESEARCH （ 影响因子：1.972； 五年影响因子：2.609 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Evidence is reviewed from Chinese and international sources on the impacts of observed climate trends and extremes and of potential future climate change on agriculture. Recent climate behaviour in China shows progressive warming and complex patterns of precipi-tation variability and frequency of extreme events. Agricultural production data highlight sub-stantial economic impacts from extreme climate events, with droughts causing the greatest effects on production. Observed warming has contributed to northward and northeastward expansion of winter wheat and maize cultivation, respectively. Multi-model climate change projections consis-tently predict warming throughout China and, with reasonable consistency, increases in precipi-tation across most of the country (averaging +5 % to +7 % by 2050, compared with 1961-1990). Studies of future climate change impacts on crops in China show a wide range of results, primarily due to differences among climate model projections, the methods used to assess crop impacts and whether the effects of CO_2 fertilisation are included. Because of China's large size and range of agro-ecological conditions, sensitivity and exposure can vary considerably, leading to complex spatial patterns of response. Crop type and variety, and whether a crop is irrigated or rain-fed also affect yield. The review highlights research priorities, which include the need to systematically monitor, retrieve and analyse observed data on climate-yield behaviour, compare results of differ-ent modelling approaches and climate scenarios, and integrate climate effects within a broader framing of food systems.

分类号： P46

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