干旱区生态环境知识资源中心(Arid): Spatial and temporal variation of soil properties and soil organic carbon in semi-arid areas of Sub-Sahara Africa

Arid

DOI	10.1016/j.geodrs.2024.e00770
	Spatial and temporal variation of soil properties and soil organic carbon in semi-arid areas of Sub-Sahara Africa
	Suh, Celestine Neba; Tsheko, Rejoice
通讯作者	Suh, CN
来源期刊	GEODERMA REGIONAL
ISSN	2352-0094
出版年	2024
卷号	36
英文摘要	Land cover land use (LCLU) patterns play a crucial role in shaping the biosphere and global climate. This influence is especially pronounced in arid and semi-arid regions, where environmental vulnerabilities are heightened. Studies have shown that LCLU Change is a key concern in the scientific community, particularly regarding its influence on soil health. This study focuses on the Gaborone area in Botswana, which has experienced rapid population growth and LCLU changes from 2002 to 2022. Landsat 7 (2002) and Sentinel-2A (2022) from USGS datasets were used to detect LCLU changes and assess their impacts on soil properties, namely: soil organic carbon (SOC) content, bulk density, soil pH, and texture. Image classification was done using a supervised classification method based on a Maximum Likelihood classifier and accuracy assessment done via a contingency matrix. LCLU change detection was achieved using the post classification comparison approach. Moreover, soil properties analysis was done using the Walkley and Black method, core method, Bouyoucos hydrometric method, and a pH meter, respectively. The effects of LCLU on soil properties and SOC were studied using a Random Forest regression analysis. Water bodies, tree cover, cropland, shrubland, bare land, and build-up were identified as major LCLU classes in the study area, with shrubland being the dominant class during the study period. A significant variation in soil properties was found across the different LCLU types. SOC content, a key determinant of soil fertility and moisture retention, was found to be higher in the tree cover and shrubland classes compared to cropland and built-up areas. A Random Forest regression analysis showed a substantial influence of LCLU on soil properties, particularly SOC dynamics. The study concludes by highlighting the interconnectedness of LCLU changes and soil properties, advocating for integrated land management strategies to balance development and environmental preservation in this climate-vulnerable landscape.
英文关键词	Soil organic carbon Land cover land use Spatial variability Remotely sensed data Carbon sequestration Haplic lixisols Gaborone
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001175484200001
WOS关键词	LAND-USE CHANGE ; NITROGEN ; STOCKS ; AFFORESTATION ; VARIABILITY ; CATCHMENT ; HIGHLANDS ; MATTER ; GROWTH ; FOREST
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403926
推荐引用方式 GB/T 7714	Suh, Celestine Neba,Tsheko, Rejoice. Spatial and temporal variation of soil properties and soil organic carbon in semi-arid areas of Sub-Sahara Africa[J],2024,36.
APA	Suh, Celestine Neba,&Tsheko, Rejoice.(2024).Spatial and temporal variation of soil properties and soil organic carbon in semi-arid areas of Sub-Sahara Africa.GEODERMA REGIONAL,36.
MLA	Suh, Celestine Neba,et al."Spatial and temporal variation of soil properties and soil organic carbon in semi-arid areas of Sub-Sahara Africa".GEODERMA REGIONAL 36(2024).