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[1]ZHANG Xuguang,MIAO Zhenghong,QIU Zhongjun,et al.Effect of Farmland Reclamation on Topsoil Soil Organic Carbon Storage in Jiamusi Area Based on GIS Technology[J].Research of Soil and Water Conservation,2019,26(01):82-85.

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Effect of Farmland Reclamation on Topsoil Soil Organic Carbon Storage in Jiamusi Area Based on GIS Technology

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 01 Page number: 82-85 Column: Public date: 2019-02-28

Title:: Effect of Farmland Reclamation on Topsoil Soil Organic Carbon Storage in Jiamusi Area Based on GIS Technology

Author(s):: ZHANG Xuguang¹, MIAO Zhenghong², QIU Zhongjun², WANG Zongming³; 1. City College of Science and Technology, Chongqing University, Chongqing 402160, China;
2. Jilin Province Water Resource and Hydropower Consultative Company of China, Changchun 130012, China;
3. Institute of Northeast Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130021, China

Keywords:: GIS; soil organic carbon; farmland; semi-variogram

CLC:: S153.6

DOI:: -

Abstract:: Based on GIS technology, soil organic carbon data of topsoil (0-30 cm) in Jiamusi in 1980 and 2010 were used to study the effects of different cropland reclamation methods on topsoil organic carbon storage and spatial distribution. The results showed that the topsoil organic carbon storage in Jiamusi area presented the decreasing trend in the past 30 years. From 1980 to 2010, the soil organic carbon storage decreased from 350.68 Tg C to 299.58 Tg C. Meantime, the cultivated land area increased by 6 790.44 km² in the 30 years, and the farmlands (wetland, woodland, grassland) was considered as the main factor which affected the soil organic carbon storage and spatial and temporal variation, and marsh reclamation resulted in the biggest change of reserves, and soil organic carbon of wetland reclamation changed at the rate of 107.21 t C/(km²·a). In conclusion, farmlands reclaimed to dry fields had a greater influence on the loss of soil organic carbon than paddy field. Reclamation of farmland was the main cause of the decrease of soil organic carbon.

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