The present study was conducted in Solan Forest Division of Himachal Pradesh covering an area of about 57,158 ha. The aim was to estimate and assess the temporal change in carbon stock of the Chil Working Circle, in t...The present study was conducted in Solan Forest Division of Himachal Pradesh covering an area of about 57,158 ha. The aim was to estimate and assess the temporal change in carbon stock of the Chil Working Circle, in two forest ranges of the Division, Solan and Dharampur, over the period of 1956-2011. The inventory data of the working plans of Solan Forest Division from 1956-1957, 1984-1985 and 2002-2003 were used in the present study while field data for biomass estimation was collected for the year 2011.The results showed a declining trend in carbon stock over 1956-1984 period, however, an increasing trend over 1984-2002 was observed, which showed a further increase for the period 2002-2011. These fluctuating trends in the forest carbon stock can be related to increasing anthropogenic pressure on forests and the subsequent introduction of a ban on green felling envisaging efficient forest management, both of which affect the forest carbon pool significantly.展开更多
Tea （Camellia sinensis）, an economically important crop grown in mountain regions, has been planted for thousands of years in South China. Tea plantations can potentially act as carbon （C） sink in local agrosystem...Tea （Camellia sinensis）, an economically important crop grown in mountain regions, has been planted for thousands of years in South China. Tea plantations can potentially act as carbon （C） sink in local agrosystems due to their high plant biomass and provide soil conservation service. To assess the contribution of tea plantations to C sequestration, the chronosequence variations of C storage were assessed in the plants and soils （0-20 cm） of tea plantations in China from 1950 to 2010, and then the inter-annual and decadal variabilities of total C storage were estimated. TotM C stocks in tea plants and soils in 2010 were 34.4 and 93.45 Tg, respectively. Carbon sequestration from 1950 to 2010 was 30.6 and 39.0 Tg in the plants and soils, respectively. The highest C sequestration happened during the 1980s and the lowest during the 1950s. The decadal average C sequestration rate ranged from 20.4 to 113.9 g m2 year-1 in the standing tea plants, and from 54.6 to 98.8 g m-2 year-1 in soils during the period of 1950 to 2010. The average ratio of C storage in soils to that in plants was 3.00 ± 0.35 before 1970 and 2.44 ±0.18 after 1970. The results suggested that tea plantation ecosystems made an important contribution to the C sinks in Chinese tea-producing regions.展开更多
文摘The present study was conducted in Solan Forest Division of Himachal Pradesh covering an area of about 57,158 ha. The aim was to estimate and assess the temporal change in carbon stock of the Chil Working Circle, in two forest ranges of the Division, Solan and Dharampur, over the period of 1956-2011. The inventory data of the working plans of Solan Forest Division from 1956-1957, 1984-1985 and 2002-2003 were used in the present study while field data for biomass estimation was collected for the year 2011.The results showed a declining trend in carbon stock over 1956-1984 period, however, an increasing trend over 1984-2002 was observed, which showed a further increase for the period 2002-2011. These fluctuating trends in the forest carbon stock can be related to increasing anthropogenic pressure on forests and the subsequent introduction of a ban on green felling envisaging efficient forest management, both of which affect the forest carbon pool significantly.
基金supported by the National Key Research & Development(R&D) Plan of China(No. 2016YFD0200900)the Scientific Research Foundation of Zhejiang University of Science & Technology,China(No.F701104F03)+2 种基金the Zhejiang Provincial Natural Science Foundation of China(No.LY14D010011)the Major Science and Technology Projects of Zhejiang Province,China(No.2015C02037)the China-EU Science and Technology Cooperation Program(No. 2014DFE90040)
文摘Tea （Camellia sinensis）, an economically important crop grown in mountain regions, has been planted for thousands of years in South China. Tea plantations can potentially act as carbon （C） sink in local agrosystems due to their high plant biomass and provide soil conservation service. To assess the contribution of tea plantations to C sequestration, the chronosequence variations of C storage were assessed in the plants and soils （0-20 cm） of tea plantations in China from 1950 to 2010, and then the inter-annual and decadal variabilities of total C storage were estimated. TotM C stocks in tea plants and soils in 2010 were 34.4 and 93.45 Tg, respectively. Carbon sequestration from 1950 to 2010 was 30.6 and 39.0 Tg in the plants and soils, respectively. The highest C sequestration happened during the 1980s and the lowest during the 1950s. The decadal average C sequestration rate ranged from 20.4 to 113.9 g m2 year-1 in the standing tea plants, and from 54.6 to 98.8 g m-2 year-1 in soils during the period of 1950 to 2010. The average ratio of C storage in soils to that in plants was 3.00 ± 0.35 before 1970 and 2.44 ±0.18 after 1970. The results suggested that tea plantation ecosystems made an important contribution to the C sinks in Chinese tea-producing regions.
