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Analysis & Evaluation of Sustainability of Beijing Urban Agriculture

Author: QiuHuaZuo
Tutor: ChengXu
School: China Agricultural University
Course: Crop Cultivation and Farming System
Keywords: Urban Agriculture Ecological Agriculture Sustainability
CLC: F327
Type: PhD thesis
Year: 2005
Downloads: 1720
Quote: 28
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Abstract

Urban agriculture must be sustainable, ecological agriculture should become the development direction of urban agriculture, which has gradually become the consensus. But urban agriculture to achieve sustainable development, in the development of strategies, resource utilization, leading industries and evaluation system and other aspects to be strengthened research. In this study, the outskirts of Beijing as an example for this to unfold. Urban agriculture is one of the most important features of a particularly high degree of intensification, especially investment intensive, often due to improper investment of resources causing serious pollution. In the water sector: Beijing urban high proportion of agricultural water and groundwater mainly agricultural activities in some areas has caused serious water pollution and groundwater funnel. Beijing 2003 production of agricultural products containing virtual water 8,779,000,000 m ~ 3, which accounts for more than animal products accounted for 71%; to achieve well-off standard, Beijing still missing virtual water 22,740,000,000 m ~ 3. In the land resource areas: agricultural land significantly reduced in recent years, although the increase in the amount of fertilizer and yield improved soil fertility, but also cause serious pollution; Ota 0-20cm and 20-50cm soil profile of the total nitrogen content between The correlation coefficient of 0.9703; Beijing in 2003 the demand for ecological footprint is 2.30507, while Beijing's ecological capacity currently only 0.26715. A threat to sustainable development. Because of its special geographic conditions, urban agriculture the leading industry in rural areas in general are very different and can not be taken for granted subjectively determined. A few years ago, Beijing in horticulture and animal husbandry as a pillar industry of urban agriculture, with a certain blindness. Mainly without taking into account their highly intensive use of water resources, especially without taking into account their potential serious non-point source pollution. Shunyi District and Miyun County on a case study. Shunyi District, Beijing suburbs strong area of ??agriculture representatives, NUTMON model analysis showed that almost all of the current Shunyi land use types are aggregated nutrients. Miyun County is the contradiction between environmental protection and economic development, representatives of the county's agricultural weak, because of the extraordinary development of animal husbandry and livestock manure is not properly handled and other reasons, there are also serious pollution, in 2003 2,891 tons of nitrogen remaining livestock, Phosphorus 384 tons; proposed the \has accounted for 0.01% -1.78% of GDP. Functions of urban agriculture on the basis of proposed future direction of development of urban agriculture in Beijing is ecological agriculture, and should be a new form - \full use of agricultural energy. In the comparative advantage theory under discussion to determine the ecological agriculture the leading industry in Beijing is: there are high-end models of vegetables, fruits and other horticulture and cattle, sheep and other herbivorous livestock and poultry products production, processing, logistics and service and other components of industrial clusters and biomass energy utilization. And designed a specific form of ecological agriculture in the future - \Sustainable development of urban agriculture need to continue to strengthen its monitoring and evaluation. This study constructed a new urban agriculture sustainability evaluation system, including ecological health, economic viability and social acceptability of the three sub-levels of a total 13 indicators proposed a complete algorithm system and analytical methods. It also constructed a new measure of the overall social situation of sustainable development indicator system - Rank Index System.

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