| The world sustainable development has been a consensus to all countries and areas.Agriculture, as the infrastructural industry directly using natural resources to produce, playsan indispensable role in human and nature's material communication, and it is the biggestindustry that people influence and rely on natural resources and eco-environment, whosesustainable development, the foundation of human's economic social sustainable development,plays a very important and decisive role in the whole country and area's sustainabledevelopment. Circular economy supplies a theoretical model to agricultural sustainabledevelopment. To develop agricultural circular economy is gradually becoming a trend of thepresent world agricultural development, and also it is the inevitable choice for agriculturalsustainable development in Ningxia.Based on the characteristic that "agriculture is connected tightly with naturaleco-environment and is apt to incorporate into the material circular process harmoniously,"the study introduces circular economy into the undeveloped and weakly eco-environmentalagricultural development in Ningxia. By expounding the theories of circular economy andagricultural circular economy, setting up the frame of evaluation target system to analyze andevaluate the agricultural development level in Ningxia, according to the difference of thenatural environment, climate, resources and the economic social development level of everyregion in Ningxia, and then put forward various mode of agricultural circular economicdevelopment, and analyze the structure, function and benefit of the mode of agriculturalcircular economic development, further bring forward the specific measures of promoting theagricultural circular economic development in Ningxia. The goal is to let agriculturaldevelopment follow the law of ecology, reasonably and effectively use agricultural resourcesand environment capacity, promote circular utilization of agricultural productive resources,advance the harmonious union of agricultural economic system and natural ecological system,to achieve the agricultural sustainable development in Ningxia.This paper is divided into seven chapters.Chapter One: introduction. The author expounds the background of the project-selection,aim and importance of the study as well as the research methods, logical frame, innovativepoint and the present research situation both in home and abroad, and etc. Chapter Two: studies of the theory of circular economy and agricultural circulareconomy. This chapter is the logical starting point of the study. It gives a brief discussion anddescription of the theoretical basis, connotation, implement principle, operation mode, mainfeatures and development level of circular economy and agricultural circular economy, andthe difference between agricultural circular economy and traditional agricultural economy, allof which become the important theoretical foundation of the study.Chapter Three: strategic analysis of the present situation of agricultural development anddeveloping the agricultural economy. Adopting SWOT analyzing method to identify thepresent situation of agricultural development in Ningxia, it gives a qualitative analysis on theadvantages, disadvantages, opportunities and threats for Ningxia to develop the agriculturalcircular economic strategy. The result shows that Ningxia possesses four advantages ofgeography, agricultural resources, agricultural products' quality and agriculture with regionalcharacteristics to develop agricultural circular economy; the disadvantages are the weakeconomic strength and scientific power, the rather weak eco-environment, seriously shortenedwater resource and frail scientific management basis; the opportunities lie in a solid groundthat the circular thought and practice of traditional agriculture prepared for Ningxia to developthe agricultural circular economy, the intrinsic adaptability the natural properties ofagriculture make the mode of agricultural circular economy to possess, great attention to theproblem of "agriculture, rural areas and farmers" that Party Central Committee and StateCouncil pay and the characteristics of the historical stage that our nation's current economydevelops at, all of which provide unprecedented opportunities for agricultural circulareconomic development; and the threats include the problem of external and failed marketmechanism of agricultural circular economy, the lack of profit driving mechanism, theobstacle of cost, price and cognition, lagged laws and regulations, policies and plans as wellas criteria establishment, insufficient agricultural investment and the backward rural financialdevelopment. The quantitative defining of the stage that Ningxia social economicdevelopment is at shows that Ningxia is at the pre-stage of the middle-term industrialization;the quantitative study by using Klassen Classification to rank Ningxia in the whole country'seconomic development level shows that Ningxia in the rage of the whole country belongs tothe less developed region in the expanding process; therefore, it makes a quite completeanalysis of the social economic background of agricultural circular economic development inNingxia.Chapter Four: evaluation of agricultural circular economic development in Ningxia. Itraises the design idea, principle and construction method of the evaluation target system ofagricultural circular economy, gives a quantitative evaluation of agricultural circular economic development level in Ningxia and makes a quantitative analysis of the obstaclefactors. The result shows: from 1998 to 2007, agricultural circular economic developmentcomprehensive level in Ningxia goes up in this decade; agricultural circular economicdevelopment comprehensive evaluation value of 2007 is 1.5 times as high as that of 1998, andit reached the speed of rise to 4.61% per year. From the evaluation guideline we can see thatthe economy and social development, resource circular utilization and population system ishigher than the year 1998, and it's increasing. The guideline of environment safety present tobe first goes down and then climbing up, from 2006, the value is higher than 1998. Resourcedecreasing investment target goes down and then becomes steady, all the evaluate value islower than 1998. The evaluate value of 2007 is 58% of 1998. It shows that from 1998 to 2007,economy and social development and resource circular utilization promoted obviously theagricultural circular economic development in Ningxia, but resources decreasing investmentand environment safety became central obstacle factors. The impediment analysis shows thatthe main obstacle of the agricultural circular economic development in Ningxia in 2007mainly centralized in resources decreasing investment and environment safety, whichcoincidence with the analysis above.Chapter Five: construction of the mode of agricultural circular economic development inNingxia. It proposes the construction idea, content, methods and procedure of the mode ofagricultural circular economic development in Ningxia. To do the clustering analysis by usingthe SPSS analysis software, Ningxia was devised into five different part: the country farm belt,the dry framing region, the sand converting farm region, the yellow river irrigating region andthe salt-alkali farm land region. Based on this, according to the difference of nature, climate,environment, economic social development and agricultural productive structure of differentregions in Ningxia, it constructs economic industrial crop comprehensive exploitive mode,"crop farming-marsh gas-animal husbandry" mode, "hothouse-shed-marsh gas" trinity mode,rice-field cultivation stereoscopic mode, "grain-potato-bacterium-livestock-marsh gas"mode, desert animal and eco-sands industrial mode and "grain-vegetable-fruit-herd"mode, and etc, which should be extended chiefly in Ningxia.Chapter Six: quantitative analysis of the experiment of the mode of agricultural circulareconomic development in Ningxia. Taking the "hothouse-shed-marsh gas" trinity mode forexample, it gives a structural and functional analysis and comprehensive benefits pre-analysisof the constructed modes and tests the reasonability and feasibility of the draft plan. Bymeasuring the micro-climate, soil fertility, pigs' growth and feed, excrement, quantity ofmarsh gas and the output and nutrition of vegetable, it shows: compared with the open-airpigpen, the pigs in eco-house grow fast and consume less feed; compared with the household marsh gas pond, the marsh gas pond in eco-house can operate more days and produce moremarsh gas, especially in winter; compared with the vegetable in ordinary house, thecucumbers and tomatoes in eco-house not only have a obvious increase in output, but alsovitamin content. The structural analysis shows that this is a new productive mode with trinity(marsh gas pond, shed, eco-house) in form and five-combination (planting, cultivation,ecology, environmental protection and energy comprehensive utilization combine) in content.Livestock's excrement and urine fill substance in time in the marsh gas pond which offersmarsh gas, marsh residue and marsh liquid at any time: marsh gas is used for domestic energyand raising the temperature of the hothouse, while marsh residue and marsh liquid offerfertilizer with good quality to vegetable. The shed may be built on marsh gas pond, whichkeep livestock warm and allay the dampness. The carbon dioxide that livestock breathe outprovides the material condition for vegetable's photosynthesis, and the oxygen produced byvegetable's photosynthesis then refreshes the shed. The functional analysis shows that in thebeneficial circular eco-system established through growing vegetable, feeding pigs andproducing marsh gas, all kinds of nutrients, bio-energy and solar energy are put into effectiveuse. The assistant power produce and input ratio is 0.51:1 ; the power produce and input ratioof planting inferior system is 6.30:1, the utilization of light power utilization is 2.15%; thepower produce and input ratio of breeding sub system is 0.55:1; the power produce and inputratio of methane sub system is 0.42:1.The comprehensive benefits analysis shows thatagricultural circular economic mode has sound economic, ecological and social benefits.Chapter Seven: enforcement solution and security measures of the mode of agriculturalcircular economic development in Ningxia. That strengthening publicity force, enhancingleadership, establishing political system, improving laws and regulations, consummating thecirculate mechanism, promoting industrial structure adjustment, consolidating scientificsupport, increasing fund investment, strengthen carrier cultivation force, encouraging thesocial public's extensive participation, perfecting the socialized service system of agriculturalcircular economy and enhancing international cooperation, can ensure agricultural circulareconomic system develop according to the expected goal. |
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