Soil salinity prediction in the Lower Cheliff plain (Algeria) based on remote sensing and topographic feature analysis
文献类型: 外文期刊
第一作者: Yahiaoui, Ibrahim
作者: Yahiaoui, Ibrahim;Douaoui, Abdelkader;Ziane, Ahmed;Yahiaoui, Ibrahim;Douaoui, Abdelkader;Zhang Qiang
作者机构:
关键词: Landsat ETM;morphology;sampling;salinity;prediction;Lower Cheliff plain
期刊名称:JOURNAL OF ARID LAND ( 影响因子:2.299; 五年影响因子:2.459 )
ISSN: 1674-6767
年卷期: 2015 年 7 卷 6 期
页码:
收录情况: SCI
摘要: Soil salinity and ground surface morphology in the Lower Cheliff plain (Algeria) can directly or indirectly impact the stability of environments. Soil salinization in this area is a major pedological problem related to several natural factors, and the topography appears to be important in understanding the spatial distribution of soil salinity. In this study, we analyzed the relationship between topographic parameters and soil salinity, giving their role in understanding and estimating the spatial distribution of soil salinity in the Lower Cheliff plain. Two satellite images of Landsat 7 in winter and summer 2013 with reflectance values and the digital elevation model (DEM) were used. We derived the elevation and slope gradient values from the DEM corresponding to the sampling points in the field. We also calculated the vegetation and soil indices (i.e. NDVI (normalized difference vegetation index), RVI (ratio vegetation index), BI (brightness index) and CI (color index)) and soil salinity indices, and analyzed the correlations of soil salinity with topography parameters and the vegetation and soil indices. The results showed that soil salinity had no correlation with slope gradient, while it was significantly correlated with elevation when the EC (electrical conductivity) values were less than 8 dS/m. Also, a good relationship between the spectral bands and measured soil EC was found, leading us to define a new salinity index, i.e. soil adjusted salinity index (SASI). SASI showed a significant correlation with elevation and measured soil EC values. Finally, we developed a multiple linear regression for soil salinity prediction based on elevation and SASI. With the prediction power of 45%, this model is the first one developed for the study area for soil salinity prediction by the combination of remote sensing and topographic feature analysis.
分类号:
- 相关文献
作者其他论文 更多>>
-
Rapid Creation of New Photoperiod-/Thermo-Sensitive Genic Male-Sterile Rice Materials by CRISPR/Cas9 System
作者:Shen Lan;Dong Guojun;Zhang Yu;Hu Guocheng;Zhang Qiang;Hu Guanglian;Xu Bo;Ren Deyong;Hu Jiang;Zhu Li;Gao Zhenyu;Zhang Guangheng;Guo Longbiao;Zeng Dali;Qian Qian
关键词:
-
Multivariate analysis between meteorological factor and fruit quality of Fuji apple at different locations in China
作者:Zhang Qiang;Han Zhen-hai;Zhang Qiang;Zhou Bei-bei;Li Min-ji;Wei Qin-ping
关键词:Fuji apple; quality attribute; meteorological factor; partial least-squares regression (PLSR)
-
Dwarfing apple rootstock responses to elevated temperatures: A study on plant physiological features and transcription level of related genes
作者:Zhou Bei-bei;Sun Jian;Liu Song-zhong;Jin Wan-mei;Zhang Qiang;Wei Qin-ping
关键词:dwarfing apple rootstock;SH series rootstocks;heat stress;physiological features
-
Mapping of the heading date gene HdAey2280 in Aegilops tauschii
作者:Liu Guo-xiang;Zhang Li-chao;Xia Chuan;Jia Ji-zeng;Zhang Jun-cheng;Zhang Qiang;Dong Chun-hao;Kong Xiu-ying;Liu Xu
关键词:Aegilops tauschii;heading date;molecular markers;HdAey2280
-
Genetic Dissection of Low Phosphorus Tolerance Related Traits Using Selected Introgression Lines in Rice
作者:Xiang Chao;Ren Jie;Zhao Xiu-qin;Ding Zai-song;Zhang Jing;Wang Chao;Zhang Jun-wei;Joseph, Charles Augustino;Zhang Qiang;Pang Yun-long;Gao Yong-ming;Ren Jie;Zhang Jing;Wang Chao;Zhang Jun-wei;Shi Ying-yao;Ren Jie
关键词:rice;phosphorus tolerance;yield;introgression line;quantitative trait locus
-
Effect of Partial Root-Zone Irrigating Deuterium Oxide on the Properties of Water Transportation and Distribution in Young Apple Trees
作者:Liu Song-zhong;Zhang Qiang;Liu Jun;Sun Jian;Wei Qin-ping
关键词:apple;D2O;partial root-zone drying;relative abundance;transportation;distribution
-
Fine Mapping of qTGW3-1, a QTL for 1 000-Grain Weight on Chromosome 3 in Rice
作者:Zhang Qiang;Yao Guo-xin;Hu Guang-long;Chen Chao;Tang Bo;Zhang Hong-liang;Li Zi-chao;Zhang Qiang;Yao Guo-xin
关键词:rice;1 000-grain weight;QTL mapping;near isogenic line (NIL) population