Carbon Storage And Characteristics Of Carbon Pool Of Poplar Plantations In Heze Shandong

The poplar plantations in Heze City were studied in this research. On the basis of field survey and Landsat5TM data, the carbon storage, characteristics of carbon pool, carbon density and its spatial distribution of poplar plantations in2011were studied by GIS and ENVI. Furthermore, the spatial and temporal patterns of poplar plantations’carbon storage from the year2000to2011in Dongming County were analyzed. This study would lay the foundation of effective peforming of carbon sink of poplar plantations in Heze and the Yellow River Flood Plain in west Shandong, and also provided a reference for calculation regional poplar plantations’carbon storage. The results fully demonstrated huge capacity of carbon sinks of regional poplar plantations. With the development of poplar plantations, the forest carbon storage would be increased rapidly, and would enhance China’s international competitiveness.The main conclusions are as follows:1. Zhonghe NO.1, ZhongheNO.2and107were the preferred varieties of carbon sequestration in Heze. The order of carbon density of different varieties on the same age was Zhonghe NO.1> Zhonghe NO.2>107. The young forest of3～9year-old were the main part of carbon sequestration. Under the premise of ensuring the area of timber forest, extending the rotation to13or14years and developing more farmland shelterbelts, road shelterbelts and riparian forests were suggested to improve the level of poplar plantation’s carbon sequestration in Heze City.2. Model B=1765.412+7378.884ln(ρ4)+2113.781X(1/ρ4)+14.541X(1/ρl) was appropriate for estimating biomass of poplars in the target area. with its multiple correlation coefficient being0.754. The relative error was only7.65%between measured and simulated values. It could be acted as a reference for the study of poplar plantations’biomass on regional scale.3. Poplar plantation in Heze was the main part of the local forest carbon sinks. Meanwhile, it was an important part of forest vegetation carbon sinks in Shandong. In2011. the total area, carbon storage and carbon density of poplar plantation was317.900ha,13.93Tg, and43.82t/hm2respectively. In addition, the carbon density of73.22%of poplar plantations was lower than57t hm-2. and the poplar plantations presented a homogeneity in spatial distribution in Heze City.4. The carbon storage of state-owned poplar plantations was0.321Tg, and carbon density was74.74t/hm2. The vegetation and soil carbon storage were0.174and0.147Tg respectively. Poplar plantations’carbon storage accounted for97.9%of vegetation’s total values. The carbon density of4.5,6,7and9year-old poplar plantations were28.54,34.45,36.51,41.24and44.80t/hm2respectively. In addition, the carbon storage of single tree in state-owned forests, village woodlots. farmland shelterbelts, road sheltcrbclts and riparian forests were56.86,43.72,78.84.69.86and43.01kg respectively.5. From the year2000to2011. the area of poplar plantation in Dongming County were17542.62ha,22705.83ha,26019.27ha and27109.10ha. The carbon density and storage were52.15,40.36,23.26,27.98t/hm2and914847.63.916407.30,605208.22,758512.62t, respectively. In2011. the area and carbon storage of poplar plantation in Dongming accounted for8.53%and5.45%of the total values in Heze City.