scholarly journals A Quantifying Approach to Soil Salinity Based on a Radar Feature Space Model Using ALOS PALSAR-2 Data

2022 ◽  
Vol 14 (2) ◽  
pp. 363
Author(s):  
Nuerbiye Muhetaer ◽  
Ilyas Nurmemet ◽  
Adilai Abulaiti ◽  
Sentian Xiao ◽  
Jing Zhao
Keyword(s):  
Soil Salinity ◽  
Soil Management ◽  
Feature Space ◽  
Soil Salinization ◽  
Synthetic Aperture ◽  
Alos Palsar ◽  
Space Model ◽  
Sustainable Soil Management ◽  
Comparison Results ◽  
Extract Information

In arid and semi-arid areas, timely and effective monitoring and mapping of salt-affected areas is essential to prevent land degradation and to achieve sustainable soil management. The main objective of this study is to make full use of synthetic aperture radar (SAR) polarization technology to improve soil salinity mapping in the Keriya Oasis, Xinjiang, China. In this study, 25 polarization features are extracted from ALOS PALSAR-2 images, of which four features are selected. In addition, three soil salinity inversion models, named the RSDI1, RSDI2, and RSDI3, are proposed. The analysis and comparison results of inversion accuracy show that the overall correlation values of the RSDI1, RSDI2, and RSDI3 models are 0.63, 0.61, and 0.62, respectively. This result indicates that the radar feature space models have the potential to extract information on soil salinization in the Keriya Oasis.

scholarly journals The Applicability of Remote Sensing Models of Soil Salinization Based on Feature Space

2021 ◽  
Vol 13 (24) ◽  
pp. 13711
Author(s):  
Jing Liu ◽  
Li Zhang ◽  
Tong Dong ◽  
Juanle Wang ◽  
Yanmin Fan ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Soil Salinity ◽  
Feature Space ◽  
Soil Salinization ◽  
Coastal Areas ◽  
Future Research ◽  
Landsat 8 ◽  
Distribution Maps ◽  
Inversion Model ◽  
Yanqi Basin

Soil salinization is a major challenge for the sustainable use of land resources. An optimal remote sensing inversion model could monitor regional soil salinity across diverse geographical areas. In this study, the feature space method was used to study the applicability of the inversion model for typical salt-affected soils in China (Yanqi Basin (arid area) and Kenli County (coastal area)), and to obtain soil salinity grade distribution maps. The salinity index (SI) surface albedo (Albedo)model was the most accurate in both arid and coastal regions with overall accuracy reaching 93.3% and 88.8%, respectively. The sensitivity factors for the inversion of salinity in both regions were the same, indicating that the SI-Albedo model is applicable for monitoring salinity in arid and coastal areas of China. We combined Landsat 8 Operational Land Imager image data and field data to obtain the distribution pattern of soil salinity using the SI-Albedo model and proposed corresponding countermeasures for soil salinity in the Yanqi Basin and Kenli County according to the degree of salinity. This study on soil salinity in arid and coastal areas of China will provide a useful reference for future research on soil salinity both in China and globally.

SOIL SALINIZATION IN THE AGRICULTURAL AREAS OF ARMENIAN SEMI-ARID REGIONS: CASE STUDY OF MASIS REGION

2020 ◽  
Vol 54 (2 (252)) ◽  
pp. 159-167
Author(s):  
K.A. Ghazaryan ◽  
G.A. Gevorgyan ◽  
H.S. Movsesyan ◽  
H.E. Khachatryan
Keyword(s):  
Arid Regions ◽  
Agricultural Soils ◽  
Soil Management ◽  
Soil Salinization ◽  
Soil Productivity ◽  
Irrigation Season ◽  
Soluble Salts ◽  
Sustainable Soil Management ◽  
Agricultural Areas

Soil salinization processes in the agricultural lands of Masis region, Armenia, were investigated. Soil samples collected from these areas at the beginning (April) and end (October) of irrigation season in 2019 were analyzed for electrical conductivity as an indication of salinity. The results of the study demonstrated that irrigation caused an intensive accumulation of soluble salts in the upper horizons of these agricultural soils posing a risk of a decline in soil productivity and of soil degradation. All of this calls for an urgent need for sustainable soil management in this region.

scholarly journals The economic value of sustainable soil management in arable farming systems – A conceptual framework

2021 ◽  
Vol 129 ◽  
pp. 126334
Author(s):  
M.C. Kik ◽  
G.D.H. Claassen ◽  
M.P.M. Meuwissen ◽  
A.B. Smit ◽  
H.W. Saatkamp
Keyword(s):  
Conceptual Framework ◽  
Economic Value ◽  
Soil Management ◽  
Farming Systems ◽  
Sustainable Soil Management ◽  
Arable Farming

scholarly journals Linking Long-Term Changes in Soil Salinity to Paddy Land Abandonment in Jaffna Peninsula, Sri Lanka

Agriculture ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 211
Author(s):  
Tharani Gopalakrishnan ◽  
Lalit Kumar
Keyword(s):  
Sri Lanka ◽  
Soil Salinity ◽  
Agricultural Land ◽  
Sea Water ◽  
Land Use Changes ◽  
Soil Salinization ◽  
Landsat Images ◽  
Paddy Land ◽  
Semi Arid Region

Soil salinity is a serious threat to coastal agriculture and has resulted in a significant reduction in agricultural output in many regions. Jaffna Peninsula, a semi-arid region located in the northern-most part of Sri Lanka, is also a victim of the adverse effects of coastal salinity. This study investigated long-term soil salinity changes and their link with agricultural land use changes, especially paddy land. Two Landsat images from 1988 and 2019 were used to map soil salinity distribution and changes. Another set of images was analyzed at four temporal periods to map abandoned paddy lands. A comparison of changes in soil salinity with abandoned paddy lands showed that abandoned paddy lands had significantly higher salinity than active paddy lands, confirming that increasing salts owing to the high levels of sea water intrusion in the soils, as well as higher water salinity in wells used for irrigation, could be the major drivers of degradation of paddy lands. The results also showed that there was a dramatic increase in soil salinity (1.4-fold) in the coastal lowlands of Jaffna Peninsula. 64.6% of the salinity-affected land was identified as being in the extreme saline category. In addition to reducing net arable lands, soil salinization has serious implications for food security and the livelihoods of farmers, potentially impacting the regional and national economy.

An assessment of policies affecting Sustainable Soil Management in Europe and selected member states

2017 ◽  
Vol 66 ◽  
pp. 241-249 ◽  
Author(s):  
Nadine Turpin ◽  
Hein ten Berge ◽  
Carlo Grignani ◽  
Gema Guzmán ◽  
Karl Vanderlinden ◽  
...  
Keyword(s):  
Soil Management ◽  
Member States ◽  
Sustainable Soil Management

scholarly journals Sustainable Soil Management in Ski Areas: Threats and Challenges

2017 ◽  
Vol 9 (11) ◽  
pp. 2150 ◽  
Author(s):  
Emanuele Pintaldi ◽  
Csilla Hudek ◽  
Silvia Stanchi ◽  
Thomas Spiegelberger ◽  
Enrico Rivella ◽  
...  
Keyword(s):  
Soil Management ◽  
Sustainable Soil Management ◽  
Ski Areas

scholarly journals Assessment and Governance of Sustainable Soil Management

2018 ◽  
Vol 10 (12) ◽  
pp. 4432 ◽  
Author(s):  
Katharina Helming ◽  
Katrin Daedlow ◽  
Bernd Hansjürgens ◽  
Thomas Koellner
Keyword(s):  
Driving Forces ◽  
Interdisciplinary Approach ◽  
Soil Management ◽  
Research Field ◽  
Future Research ◽  
Soil Functions ◽  
Special Issue ◽  
Arable Soils ◽  
Sustainable Soil Management ◽  
Production Conditions

The globally increasing demand for food, fiber, and bio-based products interferes with the ability of arable soils to perform their multiple functions and support sustainable development. Sustainable soil management under high production conditions means that soil functions contribute to ecosystem services and biodiversity, natural and economic resources are utilized efficiently, farming remains profitable, and production conditions adhere to ethical and health standards. Research in support of sustainable soil management requires an interdisciplinary approach to three interconnected challenges: (i) understanding the impacts of soil management on soil processes and soil functions; (ii) assessing the sustainability impacts of soil management, taking into account the heterogeneity of geophysical and socioeconomic conditions; and (iii) having a systemic understanding of the driving forces and constraints of farmers’ decision-making on soil management and how governance instruments may, interacting with other driving forces, steer sustainable soil management. The intention of this special issue is to take stock of an emerging interdisciplinary research field addressing the three challenges of sustainable soil management in various geographic settings. In this editorial, we summarize the contributions to the special issue and place them in the context of the state of the art. We conclude with an outline of future research needs.

Sign in / Sign up

Export Citation Format

Share Document