| With the convening of the Copenhagen conference, estimate of carbon stock has become an important concern by home and abroad. And forest as the main body of absorbing CO2, whose carbon sink function has been gradually paid more and more attention by the people.Moso Bamboo (Phyllostachys heterocycla) is uneven-aged forest, with fast growth, and high production efficiency, so Bamboo can play an important role in the mitigation of global climate change due to its powerful carbon sink. Fujian Province, with its superior natural conditions becomes China's main focus on the production areas of bamboo. At present, the research about Moso Bamboo ecosystem in Fujian province of carbon storage, the spatial and temporal variation characteristics and carbon function is less. This paper adopts the research methods of field investigation with Moso Bamboo survey data in Fujian province, for estimating Carbon stock in the Moso Bamboo ecosystem as counties for scale, analyzing the spatial distribution pattern and carbon storage dynamic change characteristics in different period, and preliminarily discussing the relationship among the social, economic and environmental factors with carbon storage.(1)Through measuring carbon density and storage of Bamboo ecosystem , the results show that:①Carbon density in Moso bamboo plantation ecosystem is 164.750t·hm-2.Among them, the largest Carbon density is Soil layer of 124.815 t·hm-2, which accounted for 75.76% of total carbon density , Second is the tree layer of 39.180 t·hm-2, accounted for 23.78%, Undergrowth and litter layer respectively is 0.161 t·hm-2 and 0.594 t·hm-2 ,accounted for 0.10% and 0.36% separately. The ratio of the ground part (tree layer and Shrub layer,Herbal layer) and underground part (litter layer and soil layer) is 1:3.18.②The average carbon density in different organs of the tree layer were 1.512 t·hm-2-19.638 t·hm-2. In the distribution, the distributing sequence of the carbon density is trunk>root> branch > underground truck > leaf. Utilize the multiple linear regression model to analyze the relationship of tree layer carbon density and environmental factors (slope bits, slopes, altitude), The results show that the effect of altitude on the carbon density is larger than the slope aspect, slope position.③soil organic carbon content and organic carbon density in Moso bamboo plantation Showed an obvious level change rule, which decreased with the increase of soil depth. The carbon content and carbon storage of soil layer (0-60cm) are unevenly distributed. 0-20cm layer of soil carbon content and carbon storage are the highest, the carbon content is 24.051g/kg, carbon storage is 47.125 t/hm2, which accounted for 41.11% of total soil carbon storage. In addition, 0-20cm of soil organic carbon density is 1.22 times and 1.66 times respectively of 20-40cm layer and 40-60cm layer. 0-40cm soil organic carbon density is 75.33% of total soil organic carbon density of, which explains t he soil surface. (0-40cm) is the larger contribution to soil organic carbon .(2)By analyzing carbon storage and its vertical distribution structure, spatial and temporal variation of Fujian Bamboo ecosystem in the 1985, 1996, 2006,the results show that:①In three periods, carbon storage in Moso bamboo plantation of Fujian is 1136.792-3016.532Mt in tree layer, which account for 13.26%-19.50% of the total carbon storage, 9.530-15.969 Mt in Undergrowth layer of 0.10 %- 0.11%, 35.162 -58.917 Mt in litter layer of 0.38% -0.41%, 7388.427 -12379.957 Mt in soil layer of 80.02 % - 86.21%. Three periods of carbon storage vertical distribution structure are basic similar, The tree layer carbon reserves is an upward tendency and the proportion is slightly higher, thus the carbon function of Bamboo ecosystem is being enhanced.②Carbon storage in Moso bamboo ecosystem of Fujian increased 6901.463Mt from 8569.912Mt in 1985 to 15471.375Mt in 2006 by 2.85% of annual increment rate over the past 21 years. From 1985 to 2006, carbon storage in Moso bamboo ecosystem of Fujian is on the rise.From the spatial distribution ,the distribution pattern of Carbon storage in Moso bamboo ecosystem of Fujian in 1985, 1996, 2006 has its similarities, both the performance of the western high and eastern low. The decreasing order of average carbon storage in Moso bamboo ecosystem of Nine cities is as follows: the nanping, sanming, longyan, quanzhou, fuzhou, ningde, xiamen, zhangzhou, putian. Carbon storage in western cities is obviously higher than the eastern. Among all counties, the largest carbon reserve is JianOu Shi , followed by Wing and the Wuyi Mountain City. The city Which carbon stocks over 1 Mt is of a total of 33, ten counties in Nanping, eight in Sanming, seven in Longyan.From the time perspective, in nine cities of Fujian Province, carbon storage in Moso bamboo ecosystem of xiamen is growing the fastest, followed by longyan and quanzhou, putian is only 0.27% of annual increment rate, which is the slowest. The growth rate of carbon stocks in the rest of the cities are increasing steadily.The pattern of growth of Various counties are continuous growth, except putian, which present the trend of increased again to reduce.(3)By calculating the global relevance index of Carbon storage in Moso bamboo ecosystem of Fujian in 1985, 1996, 2006, the results of Global Moran's I were 0.36,0.38,0.41, were greater than zero. Z values were tested, whose values respectively were 4.98,5.32,5.57, outside the range of (-1.96,1.96), indicating that Carbon storage in Moso bamboo ecosystem of Fujian during the three periods showed a significant positive correlation, with a clear agglomeration. Moran's I is gradually increasing, the relevance of the carbon storage is more and more big.There are significant local spatial clustering phenomena in carbon storage in Moso bamboo ecosystem of Fujian, and the cities and counties which appear significant positive correlation was more than the others, which appear negatively correlated, in addition, the distribution relevance between most counties and surrounding area is not obvious. Nanping, sanming,longyan, which located in Northwest of Fujian manifested as "high-high" positive correlation, the southeast coastal areas expressed as"low-low"association, which are related to agglomeration characteristics, while a small number of counties in the gap compared with the surrounding counties is large, showing a significant "high-low"of negative association.(4)Using factor analysis to analyze the relationship among climatic factors (average annual temperature and rainfall), population density, GDP and carbon storage in Moso bamboo plantation. The results showed that rainfall was positively correlated with carbon storage, temperature appeared the negative relationship, population density and economic development level is inversely related to carbon storage. However, the rapid development of population density and GDP,carbon storage of Fujian Bamboo ecosystem is also increasing. It indicated that the economy has not affected the increase of Bamboo carbon stocks. It will contribute to protection and sustainable development of regional ecological environment as long as we are able to management forestry reasonably, plant bamboo appropriate and Maintain economic, social and environmental development.
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