Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China
China policies and Grain-for-Green Project have led to changes in farmland area and grain production. Climate change was also occurring during this period. To analyze the effects of land use and climate change on grain production, the area of farmland in northern China during 1988–2008 was determine...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2014/606787 |
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| author | Qingshui Lu Zhiqiang Gao Xinliang Xu Jicai Ning Xiaoli Bi |
| author_facet | Qingshui Lu Zhiqiang Gao Xinliang Xu Jicai Ning Xiaoli Bi |
| author_sort | Qingshui Lu |
| collection | DOAJ |
| description | China policies and Grain-for-Green Project have led to changes in farmland area and grain production. Climate change was also occurring during this period. To analyze the effects of land use and climate change on grain production, the area of farmland in northern China during 1988–2008 was determined from remote sensing images, a moisture index (MI) was calculated from daily meteorological data obtained from weather stations, and unit grain production was obtained from statistical yearbooks. Using statistical and spatial analyses, we determined that MI decreased across most of the study area during this period. This decrease in humidity caused humid zones to decrease and semiarid areas to increase. Combined effects of decreased humid area and conversion of farmland resulted in a decrease in agricultural land in humid areas and an increase in semiarid and arid areas. Increases in unit grain production, machine power, and irrigated farmland area led grain production to increase from 122,799,081 to 188,532,597 ton in humid areas, from 28,875,900 to 115,976,814 in semiarid areas, and from 7,622,100 to 15,490,026 in arid areas, respectively. Increased unit grain production and farmland resulted in increased importance of semiarid areas for grain production. |
| format | Article |
| id | doaj-art-bab2561cb29f44e0b8f8628bb83e13dd |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-bab2561cb29f44e0b8f8628bb83e13dd2025-02-03T01:12:59ZengWileyAdvances in Meteorology1687-93091687-93172014-01-01201410.1155/2014/606787606787Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern ChinaQingshui Lu0Zhiqiang Gao1Xinliang Xu2Jicai Ning3Xiaoli Bi4Yantai Institute of Coastal Zone Research, CAS, Yantai, Shandong 264003, ChinaYantai Institute of Coastal Zone Research, CAS, Yantai, Shandong 264003, ChinaState Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, ChinaYantai Institute of Coastal Zone Research, CAS, Yantai, Shandong 264003, ChinaYantai Institute of Coastal Zone Research, CAS, Yantai, Shandong 264003, ChinaChina policies and Grain-for-Green Project have led to changes in farmland area and grain production. Climate change was also occurring during this period. To analyze the effects of land use and climate change on grain production, the area of farmland in northern China during 1988–2008 was determined from remote sensing images, a moisture index (MI) was calculated from daily meteorological data obtained from weather stations, and unit grain production was obtained from statistical yearbooks. Using statistical and spatial analyses, we determined that MI decreased across most of the study area during this period. This decrease in humidity caused humid zones to decrease and semiarid areas to increase. Combined effects of decreased humid area and conversion of farmland resulted in a decrease in agricultural land in humid areas and an increase in semiarid and arid areas. Increases in unit grain production, machine power, and irrigated farmland area led grain production to increase from 122,799,081 to 188,532,597 ton in humid areas, from 28,875,900 to 115,976,814 in semiarid areas, and from 7,622,100 to 15,490,026 in arid areas, respectively. Increased unit grain production and farmland resulted in increased importance of semiarid areas for grain production.http://dx.doi.org/10.1155/2014/606787 |
| spellingShingle | Qingshui Lu Zhiqiang Gao Xinliang Xu Jicai Ning Xiaoli Bi Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China Advances in Meteorology |
| title | Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China |
| title_full | Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China |
| title_fullStr | Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China |
| title_full_unstemmed | Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China |
| title_short | Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China |
| title_sort | trends in moisture index farmland area and their combined effects on grain production in northern china |
| url | http://dx.doi.org/10.1155/2014/606787 |
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