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Study about the Least Cultivated Areas Based on the Dynamic Balance of Productivity

Author: WuXiaoLi
Tutor: ChenWenBo
School: Jiangxi Agricultural University,
Course: Soil
Keywords: Yongxiu County Arable land Capacity accounting Food Security Amount of cultivated land Dynamic equilibrium
CLC: F323.211
Type: Master's thesis
Year: 2011
Downloads: 55
Quote: 0
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Abstract

Food security issues for a long time. Dwindling arable land, resulting in China's grain sown area show a downward trend, the most direct is the food problem. Arable land as the material basis of people depend on the production and development of the most fundamental human access to food and other agricultural products indispensable production, plays a fundamental role in the sustainable development of agriculture and the national economy. Therefore, to maintain a certain number and quality of arable land resources and basic food supplies directly related to economic development, social stability and national security. Farmland protection research is an important research content of a new round of land-use planning involves the determination of the amount of cultivated land. Special study of farmland protection of farmland quality research is weak. In this context, Yongxiu County, a new round of land use planning, combined Yongxiu County farmland capacity accounting results, the farmland protection of Yongxiu County. The content of their research is mainly based on the amount of cultivated land to determine the capacity dynamic equilibrium. In the planning of land use, introduction of capacity accounting concept has always been to keep local a certain amount of arable production can as the planning of the hard indicators, in order to ensure food security for the lower limit carry out control, and keep the local arable production can not reduce, avoid the simple protection of arable land and lead to a decline in quality. Obtained by analyzing the following basic conclusions: (1) Through the analysis of Yongxiu County's farmland scale changes since 1996 and found that with the rapid development of the national economy Yongxiu County, arable land resources in the use of the process to increase speed less than to reduce the speed, the downward trend of the total area of ??arable land, reducing the whereabouts of cropland conversion program, of course, some farmland for construction. Therefore, the amount of cultivated land has a very important significance. (2) the use of arable production capacity accounting results mainly 1:50,000 Yongxiu County farmland production database, summarized from the database of the theoretical capacity of the various townships, capacity and actual capacity. The arable production capacity accounting results show that, as long as the increase of investment in agriculture, including the construction of infrastructure and investment in science and technology, in the next several years, Yongxiu County farmland capacity yields will have a lot of yield potential. Jiujiang City, issued to Yongxiu County new construction land occupation of cultivated land indicators of 788.83 hectares additional land indicators 2448.28 hectares 40,144.44 hectares, the amount of cultivated land. Calculated in accordance with the Yongxiu County average effective yield of 9254.37 kg / ha (standard grain yield), 2006-2020 Yongxiu County Farmland productivity control indicators of the amount of at least 371,500 tons. Therefore, it is very important to guarantee a certain amount of capacity for grain output. (3) during the planning Yongxiu County farmland reduction was mainly caused by the construction land occupation and ecological returning farmland to forest lake. Farmland increased mainly through land consolidation, development and reclamation. By subtracting the planning period Yongxiu County farmland reduction and an increase in the amount of arable land plus the planning period forecast county the amount of cultivated land in 2020. Yongxiu County planning period to determine the amount of cultivated land must ensure food security in the region. The actual total production capacity of 362,700 tons for 2007 Yongxiu County farmland, and planning during the final arable land total production capacity to 376,600 tons, to meet the food demand Yongxiu County, greater than the Jiujiang City issued farmland total capacity of 371,500 tons. Cultivated land planning period to determine the amount of 39,007.26 hectares 1137.18 hectares less, than Jiujiang City, \capacity, capacity and actual total capacity reached a total production capacity of the higher authorities, cultivated capacity to control the total amount of dynamic equilibrium, and provides a reference index for the rational use of arable land resources. In addition, faced with the pressure of the current world food crisis, China is not only the urbanization rate increased as the only goal of the economic development, but to ensure that a certain number and quality of the amount of cultivated land to achieve food security. This is truly implement a concrete manifestation of the concept of scientific development, so as to achieve sustainable development of economy and society.

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CLC: > Economic > Agricultural economy > China 's agricultural economy > Construction and development of agricultural economy > Agricultural resources development and utilization of > Types and evaluation of agricultural resources > Land, arable land resources
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