Soil Organic Carbon Stock as Affected by Land Use/Cover Changes in the Humid Region of Northern Iran

作     者：Samereh FALAHATKAR Seyed Mohsen HOSSEINI Abdolrassoul SALMAN MAHINY Shamsollah AYOUBI WANG Shao-qiang 

作者机构：Faculty of Natural Resource and Marine Science Tarbiat Modares University Department of Environmental Sciences Gorgan University of Agricultural Sciences and Natural Resources Department of Soil Sciences College of Agriculture Isfahan University of Technology Key Lab of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2014年第11卷第2期

页      面：507-518页

核心收录：

学科分类：12[管理学] 082802[工学-农业水土工程] 081802[工学-地球探测与信息技术] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0303[法学-社会学] 1204[管理学-公共管理] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0828[工学-农业工程] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0705[理学-地理学] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 0706[理学-大气科学] 081602[工学-摄影测量与遥感] 0813[工学-建筑学] 0704[理学-天文学] 0833[工学-城乡规划学] 120405[管理学-土地资源管理] 0713[理学-生态学] 0834[工学-风景园林学（可授工学、农学学位）] 

主　　题：Soil organic carbon stocks Land cover Land use Iran 

摘      要：【Title】 【Author】 This study was conducted to determine the changes in the soil carbon stocks as influenced by land use in a humid zone of Deylaman district （10,876 ha）, a mountainous region of northern Iran. For this, land use maps were produced from TM and ETM＋ images for 1985, 2000 and 2010 years; and this was supplemented by field measurement of soil carbon in 2010. The results showed that the mean soil organic carbon （SOC） density was 6.7±1.8 kg C m-2, 5.2±3.4 kg C m-2 and 3.2±1.8 kg C m-2 for 0-20 cm soil layer and 4.8±1.9 kg C m-2, 3.1±2 kg C m-2 and 2.7±1.8 kg C m-2 for 20-40 cm soil layer in forest, rangeland and cultivated land, respectively. During the past 25 years, 14.4% of the forest area had been converted to rangeland; and 28.4% of rangelands had been converted to cultivated land. According to the historical land use changes in the study area, the highest loss of SOC stocks resulted from the conversion of the forest to rangeland （0.45×104 Mg C in 0-40 cm depth layer）; and the conversion of rangeland to cultivated land （0.37×104 Mg C in 0-40 cm）, which typically led to the loss of soil carbon in the area studied. The knowledge on the historical land use changes and its influence on overall SOC stocks could be helpful for making management decision for farmers and policy managers in the future, for enhancing the potential of C sequestration in northern Iran.