IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

谢云; 刘继东

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IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

谢云, 刘继东

文章导航 > Chinese Geographical Science > 1998 > 8(4): 309-316

谢云, 刘继东. IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992[J]. 中国地理科学, 1998, 8(4): 309-316.

引用本文:

谢云, 刘继东. IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992[J]. 中国地理科学, 1998, 8(4): 309-316.

Xie Yun, Liu Jidong. IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992[J]. Chinese Geographical Science, 1998, 8(4): 309-316.

Citation:

Xie Yun, Liu Jidong. IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992[J]. Chinese Geographical Science, 1998, 8(4): 309-316.

IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

谢云,
刘继东

The Department of Resource and Environmental Science, Beijing Normal University, The Open Research Laboratory of Environmental Change and Natural Disasters of the State Education Commission, Beijing 100875, P. R. China

IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

Xie Yun,
Liu Jidong

The Department of Resource and Environmental Science, Beijing Normal University, The Open Research Laboratory of Environmental Change and Natural Disasters of the State Education Commission, Beijing 100875, P. R. China

摘要: The grain yield per unit area in China has been increasing from 1949 to 1992 with annual fluctuations, which was caused by both policies and monsoon climate. The total grain yield is divided into trend yield, which reflects the influence of economic factors, and climate yield, which reflects the impact of climate factors. The results of grain and climate yield by EOF (empirical orthogonal function) method show that the grain yield in the eastern China is higher and more fluctuating than that in the western region. The spatial and temporal distributions of climate yield were divided into four patterns. Regional unanimity of climate yield variation is the first and main spatial pattern, and then there are the spatial patterns of north-south difference and east-west difference in some years. Generally, climate conditions are good for grain yield during the 1950s and 1980s all over the country.
- grain yield /
- climate yield /
- empirical orthogonal function /
- spatial and temporal distribution
Abstract: The grain yield per unit area in China has been increasing from 1949 to 1992 with annual fluctuations, which was caused by both policies and monsoon climate. The total grain yield is divided into trend yield, which reflects the influence of economic factors, and climate yield, which reflects the impact of climate factors. The results of grain and climate yield by EOF (empirical orthogonal function) method show that the grain yield in the eastern China is higher and more fluctuating than that in the western region. The spatial and temporal distributions of climate yield were divided into four patterns. Regional unanimity of climate yield variation is the first and main spatial pattern, and then there are the spatial patterns of north-south difference and east-west difference in some years. Generally, climate conditions are good for grain yield during the 1950s and 1980s all over the country.
- grain yield /
- climate yield /
- empirical orthogonal function /
- spatial and temporal distribution

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IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

谢云,
刘继东

The Department of Resource and Environmental Science, Beijing Normal University, The Open Research Laboratory of Environmental Change and Natural Disasters of the State Education Commission, Beijing 100875, P. R. China

刊出日期: 1998-12-20

关键词:

grain yield /

climate yield /

empirical orthogonal function /

spatial and temporal distribution

摘要: The grain yield per unit area in China has been increasing from 1949 to 1992 with annual fluctuations, which was caused by both policies and monsoon climate. The total grain yield is divided into trend yield, which reflects the influence of economic factors, and climate yield, which reflects the impact of climate factors. The results of grain and climate yield by EOF (empirical orthogonal function) method show that the grain yield in the eastern China is higher and more fluctuating than that in the western region. The spatial and temporal distributions of climate yield were divided into four patterns. Regional unanimity of climate yield variation is the first and main spatial pattern, and then there are the spatial patterns of north-south difference and east-west difference in some years. Generally, climate conditions are good for grain yield during the 1950s and 1980s all over the country.

English Abstract

谢云, 刘继东. IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992[J]. 中国地理科学, 1998, 8(4): 309-316.

引用本文:

谢云, 刘继东. IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992[J]. 中国地理科学, 1998, 8(4): 309-316.

Xie Yun, Liu Jidong. IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992[J]. Chinese Geographical Science, 1998, 8(4): 309-316.

Citation:

Xie Yun, Liu Jidong. IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992[J]. Chinese Geographical Science, 1998, 8(4): 309-316.

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IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

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IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

The Department of Resource and Environmental Science, Beijing Normal University, The Open Research Laboratory of Environmental Change and Natural Disasters of the State Education Commission, Beijing 100875, P. R. China

English Abstract

IMPACT OF CLIMATE ON GRAIN YIELD PER UNIT AREA IN CHINA DURING THE YEARS OF 1949-1992

The Department of Resource and Environmental Science, Beijing Normal University, The Open Research Laboratory of Environmental Change and Natural Disasters of the State Education Commission, Beijing 100875, P. R. China

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