Land use change in rice, wheat and maize production in China (1961–1998)

Tong, Chengli; Hall, Charles A. S.; Wang, Hongqing

doi:10.1016/s0167-8809(02)00182-2

Cited by 158 publications

(93 citation statements)

References 15 publications

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“…More importantly, more of the reduction in arable land has occurred in areas with fertile soils (Tong et al, 2003). This reduction in arable land was largely caused by the construction of new buildings and roads and by reforestation on marginal arable land.…”

Section: Key Trends Working Against An Increase In Rice Production Inmentioning

confidence: 99%

Current Status and Challenges of Rice Production in China

Peng

Tang

Zou

2009

Plant Production Science

634

310

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: Rice production in China has more than tripled in the past fi ve decades mainly due to increased grain yield rather than increased planting area. This increase has come from the development of high-yielding varieties and improved crop management practices such as nitrogen fertilization and irrigation. However, yield stagnation of rice has been observed in the past ten years in China. As its population rises, China will need to produce about 20% more rice by 2030 in order to meet its domestic needs if rice consumption per capita stays at the current level. This is not an easy task because several trends and problems in the Chinese rice production system constrain the sustainable increase in total rice production. Key trends include a decline in arable land, increasing water scarcity, global climate change, labor shortages, and increasing consumer demand for high-quality rice (which often comes from low-yielding varieties). The major problems confronting rice production in China are narrow genetic background, overuse of fertilizers and pesticides, breakdown of irrigation infrastructure, oversimplifi ed crop management, and a weak extension system. Despite these challenges, good research strategies can drive increased rice production in China. These include the development of new rice varieties with high yield potential, improvement of resistances to major diseases and insects, and to major abiotic stresses such as drought and heat, and the establishment of integrated crop management. We believe that a sustainable increase in rice production is achievable in China with the development of new technology through rice research.

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Section: Key Trends Working Against An Increase In Rice Production Inmentioning

confidence: 99%

Current Status and Challenges of Rice Production in China

Peng

Tang

Zou

2009

Plant Production Science

634

310

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“…As noted above, large areas of arable land have come under wheat and maize production in China since 1961 (Dyson 2001;Tong et al 2003). Most arable land is in areas prone to humidity in the summer or is water-limited.…”

Section: Exposure To Maize and Wheat Borne Toxins Is Increasingmentioning

confidence: 99%

“…For food, wheat is nearly equal to rice, a well-established food crop since the 6th century (Myer 1978). The ratio of rice to wheat þ maize production has changed from 1.2:1 to 0.8:1 (Tong et al 2003). Fusarium head blight epidemics have been greatly increasing in frequency in recent years (Chen et al 2001) and, as noted above, there is exposure to DON in China from both wheat and maize, although it is not well documented (Canady et al 2001;Meky et al 2003).…”

Section: Exposure To Maize and Wheat Borne Toxins Is Increasingmentioning

confidence: 99%

Mycotoxins in small grains and maize: Old problems, new challenges

Miller

2008

Food Additives & Contaminants: Part A

204

135

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This paper reviews the challenges relating to chronic contamination of small grains and maize with deoxynivalenol and related compounds, fumonisin and the use of ensiled cereals in cool dairy areas. Uncertainties in the tolerable daily intakes for deoxynivalenol and fumonisin are discussed as they have the potential to affect current regulatory limits. In addition, climate change is resulting in more extreme rainfall and drought events which favour formation of deoxynivalenol and fumonisin, respectively. The development and refinement of models for predicting mycotoxin accumulation from weather data will become an essential tool for managing these events. Such models are also important for providing timely food aid to developing countries, which experience increased occurrence of acute toxicities, especially in children. Chronic contamination of silage in some areas with some Penicillium toxins deserves more attention in terms of their economic effects and possible implications for the purity of milk.

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“…8). The changes in Year the area of cereal harvest were influenced mainly by government policy (Tong et al 2003), market price fluctuations, and climate variability (Tao et al 2004). Our results suggest that H/C will have to increase to satisfy the food demand of the increasing population.…”

Section: Discussionmentioning

confidence: 99%

Climate change, land use change, and China’s food security in the twenty-first century: an integrated perspective

et al. 2008

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Food security in China, the world's most populous country, has long been a concern because of the challenges of population growth, water shortages, and loss of cropland through urbanization, soil degradation, and climate change. Here, we present an integrated analysis of China's food demand and supply under IPCC Special Report on Emissions Scenarios A1, A2, B1, and B2 in 2020, 2050, and 2080, based on official statistics and future development scenarios. Our analysis accounts for future socioeconomic, technological, and resource developments, as well the impact of climate change. We present a covariant relationship between changes in cereal productivity due to climate change and the cereal harvest area required to satisfy China's food demand. We also estimated the effects of changing harvested areas on the productivity required to satisfy the food demand; of productivity changes due to climate change on the harvest area required to satisfy food demand; and of productivity and land use changes on the population at risk of undernutrition. China could be able to feed herself without disturbing the global food market in the twenty-first century, but whether the government will choose self-sufficiency or increased food imports may depend on the cost of change, which remains unknown.

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Land use change in rice, wheat and maize production in China (1961–1998)

Cited by 158 publications

References 15 publications

Current Status and Challenges of Rice Production in China

Current Status and Challenges of Rice Production in China

Mycotoxins in small grains and maize: Old problems, new challenges

Climate change, land use change, and China’s food security in the twenty-first century: an integrated perspective

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