A Study On The Development Potential Of Fast-growing And High-yielding Plantation In China

With the constant development of economy and people's living condition, the need of lumber in China is increasing continuously. Since the year of 1999, the average expense on import of lumber and its production to our country has exceeded over 10 billion dollars annually. In 2009, the total expense of the imported commercial timber, wood pulp, paper and paperboard was 20 billion dollars, which is second only to petrol and steel, as the third products costing the most foreign exchange.On the other hand, thanks to the reinforcement of environmental protection awareness, China imposed the ban on commercially felling for natural forest in ecologically fragile areas, limited the production and felling of state-owned forests. In this way, the production of woods decreased, causing the contradiction of lumber supply and demand. Out of the international development situation, it is very efficient to solve the contradiction of lumber supply and demand by means of developing forest featured in fast growing and high-yielding. However, the development of such forest is combined by natural resources and social-economic conditions, with low levels of development. Although since 2002, China has brought the development of fast growing and high-yielding forest into the six major forestry projects. This, to some extent, promotes the further development of plantation. However, the average increment of 9～12 m3/hm2 is much lower than the average level of approximately 30 m3 of New Zealand, Sweden, Brazil and other countries.Out of the natural resources and social-economic conditions that affect the development of fast growing and high-yielding forest, this dissertation, based on the theories of forestry economics, sociology and system theory, combined with field survey and literature research, quantitative and qualitative analysis, empirical research standardized research, makes a systematic and profound research on the potential of development of fast growing and high-yielding forest, with the purpose of establishing assessment model of comprehensive development potential for China's fast-growing and high-yielding forest by means of factor analysis, as well as discovering the methods of improving its potential and the proper layout. The following are some conclusions:(1) Based on the analysis of natural resource potential, as well as previous researches, this dissertation studies further and determines the standard of the ground of fast-growing and high-yielding forest. Taking the standard of the ground of fast-growing and high-yielding forest as scale, this dissertation analyzes the quality of forest and backup forest quantitatively and qualitatively. Besides, combined with different regions, the integrated model of relative climate, the dissertation analyzes the supply potential of fast-growing and high-yielding forest quantitatively and systematically. In this way, we can further estimate the possible supply potential of China's fast-growing and high-yielding forest land is 11.3442 million hm2, and the annual supply potential of China's fast-growing and high-yielding forest production is 187.7839 million m3, of which Eucalyptus takes up 30,990,200 m3, fir takes up 18,501,900 m3, and pine is12,488,700 m3.(2) Based on the analysis of socio-economic conditions potential, through empirical research, qualitative and quantitative research, this dissertation reveals the impact of seed breeding techniques, cultivation and management techniques, forest maintenance technology, processing and utilization technologies productivity on the fast growing and high-yielding forest, as well as the promotion effect of the promotion and application of science technology, the change of science technology into productivity by means of technological service system. In addition, from the aspects of the necessity of system reform and the promotion effect of fast growing and high-yielding forest, this dissertation describes the influence of collective forest right on peasants planting zeal. Using empirical case, the author quantitatively analyzes the promotion effect of collective forest right on unleashing the potential of fast growing and high-yielding forest. Moreover, based on the comparison of economic benefits of triploid white poplar and ordinary crops, this dissertation comes to the conclusion that planting poplar can earn much more than ordinary crops. This proves the economic possibility of changing the development potential of fast growing and high-yielding forest into virtual supply power.(3) Based on the analysis of natural resources and socio-economic potential, according to literature survey, statistical analysis, expert questionnaire and group discussion, the author builds an indicator assessment system. By using the method of factor analysis, this dissertation assesses quantitatively on the comprehensive development potential of the regions of China's fast growing and high-yielding forest. In this way, the 31 provinces and regions are divided into three parts, Class I Core Area as plantation area, Class II Area as ordinary area and Class III as improper area. The author divides these 13 provinces of Class I core area five major areas for fast growing and high-yielding forest development: Guangxi, Fujian and Guangdong as the core of the south east coastal areas, the Jiangsu, Jiangxi, Zhejiang and Hunan as the core of midstream and downstream of Yangtze River, Shandong as the core of midstream and downstream of Huang River, the Jilin, Heilongjiang and Liaoning as the core of northwest area, Sichuan, Yunnan as the core of west area. Since the development potential of fast growing and high-yielding forest in southeast coastal area is great, this area should be the priority, in order to realize the development potential of fast growing and high-yielding forest and to promote its scientific and healthy development.The main innovations of this paper are as follows. First, based on the previous research methods, this paper systematically measures the forest supply potential and wood supply potential of fast growing and high-yielding forests, and the wood supply potential of the main types of tress in southeast coast. Second point is the comprehensive natural resource potential and socio-economic potential, which build a scientific assessment system of the comprehensive production potential of China's fast growing and high-yielding forest. Third, this dissertation applies the factor analysis method to analyze the production potential of the fast growing and high-yielding forest in each province and region. Based on this, the core development areas and the priorities of development are settled.