干旱区生态环境知识资源中心(Arid): Assessment of land use change and its effect on soil carbon stock using multitemporal satellite data in semiarid region of Rajasthan, India

Arid

DOI	10.1186/s13717-019-0193-5
	Assessment of land use change and its effect on soil carbon stock using multitemporal satellite data in semiarid region of Rajasthan, India
	Sharma, Garima 1; Sharma, L. K.1; Sharma, K. C.2
通讯作者	Sharma, Garima
来源期刊	ECOLOGICAL PROCESSES
EISSN	2192-1709
出版年	2019
卷号	8 期号:1
英文摘要	Background Land use change plays a vital role in global carbon dynamics. Understanding land use change impact on soil carbon stock is crucial for implementing land use management to increase carbon stock and reducing carbon emission. Therefore, the objective of our study was to determine land use change and to assess its effect on soil carbon stock in semi-arid part of Rajasthan, India. Landsat temporal satellite data of Pushkar valley region of Rajasthan acquired on 1993, 2003, and 2014 were analyzed to assess land use change. Internal trading of land use was depicted through matrices. Soil organic carbon (SOC) stock was calculated for soil to a depth of 30 cm in each land use type in 2014 using field data collection. The SOC stock for previous years was estimated using stock change factor. The effect of land use change on SOC stock was determined by calculating change in SOC stock (t/ha) by deducting the base-year SOC stock from the final year stock of a particular land use conversion. Results The total area under agricultural lands was increased by 32.14% while that under forest was decreased by 23.14% during the time period of 1993-2014. Overall land use change shows that in both the periods (1993-2003 and 2003-2014), 7% of forest area was converted to agricultural land and about 15% changes occurred among agricultural land. In 1993-2003, changes among agricultural land led to maximum loss of soil carbon, i.e., 4.88 Mt C and during 2003-2014, conversion of forest to agricultural land led to loss in 3.16 Mt C. Conclusion There was a continuous decrease in forest area and increase in cultivated area in each time period. Land use change led to alteration in carbon equity in soil due to change or loss in vegetation. Overall, we can conclude that the internal trading of land use area during the 10-year period (1993-2003) led to net loss of SOC stock by 8.29 Mt C. Similarly, land use change during 11-year period (2003-2014) caused net loss of SOC by 2.76 Mt C. Efforts should be made to implement proper land use management practices to enhance the SOC content.
英文关键词	Multitemporal satellite data Land use change dynamics Internal trading of land use SOC stock Stock change factor Change in SOC pool Land use management
类型	Article
语种	英语
国家	India
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000494818200001
WOS关键词	ORGANIC-CARBON ; SEQUESTRATION ; NITROGEN ; MITIGATE ; FOREST ; TEMPERATURE ; CULTIVATION ; MOUNTAINS ; DYNAMICS ; BUDGET
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311028
作者单位	1.Cent Univ Rajasthan, Dept Environm Sci, NH 8, Bandarsindri 305817, Rajasthan, India; 2.MDS Univ, Ajmer, Rajasthan, India
推荐引用方式 GB/T 7714	Sharma, Garima,Sharma, L. K.,Sharma, K. C.. Assessment of land use change and its effect on soil carbon stock using multitemporal satellite data in semiarid region of Rajasthan, India[J],2019,8(1).
APA	Sharma, Garima,Sharma, L. K.,&Sharma, K. C..(2019).Assessment of land use change and its effect on soil carbon stock using multitemporal satellite data in semiarid region of Rajasthan, India.ECOLOGICAL PROCESSES,8(1).
MLA	Sharma, Garima,et al."Assessment of land use change and its effect on soil carbon stock using multitemporal satellite data in semiarid region of Rajasthan, India".ECOLOGICAL PROCESSES 8.1(2019).