A Study On Anyue County Farmland Crops Vegetation Carbon And Carbon Sequestration Measures

Increased concentrations of greenhouse gases in the atmosphere since the end of the 20 th century that produce the greenhouse effect,caused by the international community pay more and more attention to terrestrial ecosystem carbon libraries and their effects on global climate change.Farmland ecosystem carbon and carbon sequestration potential is an important part of the study of terrestrial ecosystem carbon cycle.Current research focus on farmland ecosystem in terms of farmland soil carbon cycle.Based on statistical yearbook data of anyue county,acquire the main economic crops production,farming area,such as statistics,to anyue county nearly six years(2007-2012)estimation of vegetation carbon,and in the small scale of villages and towns in the region is the difference between carbon and carbon density analysis,and put forward measures for carbon sequestration Hope to strengthen crops vegetation carbon and carbon sequestration measures regional case studies,to explore the scale conversion for different crops vegetation carbon space scale to contribute.Through this paper studies the following conclusions:(1)The characteristics of Anyue County agricultural economy:Agricultural production position important in GDP,gross agricultural productivity is not high,planting in the status of agriculture,agricultural infrastructure backwardness,characteristic agriculture begun to take shape,the trend is good.The characteristics of the farming:Planting is given priority to with food production,economic crops growth trend of cultivated land area showed a trend of decrease, water, dry land similar multi-cropping index is high,the small scale of planting industry,the traditional production way.(2)The Anyue County farmland crops vegetation carbon dynamics.Vegetation carbon fro m 59.10×104t in 2007 growth to 67.55×104t in 2012,carbon density from 6.18t/hm2 in 2007 growth to 7.44t/hm2 in 2012.In Anyue County in recent 6 years average crop vegetation carbon composition, average composition is given priority to with Da Chun crops.In rice c rops account for most,sweep potato roportion is relatively small,the rest of the crop in the proportion of the whole crop vegetation carbon from big to small in the order:rice(27.75%)>wheat(22.37%)>maize(20.03%)>rapeseed(12.16%)>other Da Chun crops(8.88%)>other Xi ao Chun crops(3.32%)>sweep potato(3.22%)>peanut(2.23%)>cotton(0.04%).(3)The Anyue County farmland crops vegetation carbon space differences.The 69 villages of anyue county in recent five years the average carbon density is the largest township Zi Zhi Township(9.60t/hm2),the average carbon density is the smallest towns in Hu Jian township(5.57t/hm2),a differential of 4.03t/hm2.Carbon density of 1.72 times the largest is the lowest towns.Each township crops vegetation carbon density obvious dynamic change.Space composition differences reason is more complex, with multiple crop index, the proportion of paddy field and dry land in the cultivated land and crop yield and related social and economic conditions.Multiple crop index,the higher the greater the township crops vegetation carbon density, paddy field area township crops such as that of high density vegetation carbon,crop yield significantly influence crop vegetation carbon.(4)For Anyue County farmland crops vegetation carbon reserves estimates,strengthen the carbon sequestration capacity of farmland ecosystem provides the following measures: Adjustment of farm land use structure;To strengthen the construction of basic farmland,To improve the agricultural production conditions;Continue to promote agricultural production technology and scientific and effective management.