Impacts of Some Climatic Factors on Soil Quality of Tropical Acid-Sand Soils

Nwosu, Nkem Joseph; Okon, Paul B.

doi:10.1007/978-3-319-93336-8_72

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…The physiographic condition of the earth surface create various physio-chemical soil types LIu, Pan, Bao, Liang, Jiang, Tu, Nong and Huang (2020) and climatic factor also play a vital role to develop various soil properties Nwosu and Okon (2020). The table 3 shows the soil variation according to various physio climatic conditions.…”

Section: Discussionmentioning

confidence: 99%

Soil Distribution in Nepal

Gurung

2020

NUTA Jnl

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Soil is the important natural recourse for living things of the world and regulates its ecosystem. Soil types are depending on physiographic and climatic factors. The study discussed soil types of Nepal prepared by Land Resource Mapping Project (LRMP) based on world reference base developed by Food and Agriculture Organization of the United States (FAO) and Soil and Terrain (SOTER) soil type of Nepal by ISRIC-World soil Information based on universal soil classification system developed by United State Department of Agriculture (USDA) using Geographic information system (GIS). According to LRMP the soil types of Nepal are as follow: Dystrochrepts Haplumbrepts Haplustalfs, Dystrochrepts Haplustalfs Rhodustalfs, Haplumbrepts Dystrochrepts Cryumbrepts, Udipsamments Dystrochrepts Rhodustalfs, Glaciated Mountain, Haplaquents Haplaqepts Eutrocrepts, Udorthents Ustorthents Haplaquents, Dystrochrepts Halpumbrepts Haplustalfs-calcarious Materials, Rhodustalfs Dystrochrepts Haplustalfs, Dystrochrepts Eutrochrepts Argiudolls, Dystrochrepts Hapludalfs Haplustalfs-Calcarious Materials, Haplaquents Psammaquents Ustorthents, Haplaquents Eutrocrepts Heplaquents-calcareous Materials and Haplaquepts Dystrochrepts Haplaquents covering four soil order i.e. Entisols, Inseptisols. Mollisols and Alfisols. According the SOTER map, the soil types are as follow: Gelic LEPTOSOLS, Eutric CAMBISOLS, Eutric REGOSOLS, Humic CAMBISOLS, Chromic CAMBISOLS, Dystric REGOSOLS, Eutric GLEYSOLS Calcaric, PHAEOZEMS, Gleyic CAMBISOLS, Haplic PHAEOZEMS, Calcaric FLUVISOLS and other are glacier, ice, rock croup, lake and water. These types of soils are controlled by physiography and climatic factors. The SOTER soil types are more familiar than LRMP soil map although in LRMP soil map is useful to understand the soil characteristics and soil forming processes of Nepal. The soil degradation mitigation and adaptive strategies should consider the soil diversity types and its controlling factors such as physiography and climate.

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Section: Discussionmentioning

confidence: 99%

Soil Distribution in Nepal

Gurung

2020

NUTA Jnl

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“…Selected soil physical indicators were categorized on the basis of critical levels from none to extreme limitation on a scale of 1 to 5, respectively, by using a relative weighting factor (RWF) based on the limitations for crop production (Landon, 1984;Lal, 1994;Nwosu and Okon, 2020). Finally, the physical soil sustainability values for each site and soil depth were calculated by summing the RWFs (Table 2).…”

Section: Estimated Soil Physical Propertiesmentioning

confidence: 99%

“…Relative weighting factors (RWF) based on threshold values of soil physical indicators by using the cumulative rating (CR) approach; adapted fromLandon (1984),Lal (1994),Cass (1999),Hazelton and Murphy (2016),Nwosu and Okon (2020) …”

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Physical assessment of a Mollisol under agroecological managements at Quillota valley. Mediterranean Central Chile

Casanova

Ticona

Salazar

et al. 2020

IJANR

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A number of agroecological practices have been proposed for assessing soil quality. Several physical soil properties have been shown to be important for determining soil quality by using the sustainability index (SI) and the cumulative rating approach. The main aim of the study was to determine the effects of different agroecological managements on the physical properties of a Mollisol in the Mediterranean central Chile. In addition, some physical properties were selected to compare the soil quality among different agroecological management practices and highly mechanized intensive systems by using the SI and cumulative rating approaches. An experimental field was defined in an area of 3.5 ha in 2014. Four sites with different agroecological practices were selected in 2019 to assess soil physical properties: rainfed Mediterranean annual prairie - no tillage (1-S), irrigated perennial prairie with deep-root species - no tillage (2-N), irrigated annual and perennial prairie - conventional tillage (4-S), irrigated vegetables and flowers - minimum tillage (4-N); an avocado orchard with traditional management was used as the control. Soil organic carbon and the following soil physical properties were selected to assess SI and CR: bulk density, total porosity, void ratio, air capacity, fast-drainage pores, relative field capacity, hydraulic conductivity, structural stability index and unavailable water pores. The applicability of the selected physical indicators to the SIs of agroecological management practices compared with the control was demonstrated. The cumulative rating index (CR) for each land use showed that all agroecological practices constituted sustainable soil management (25≤CR<30), whereas the avocado orchard showed the least sustainable management (30≤CR<40), and a change in soil use is recommended.

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Impacts of Some Climatic Factors on Soil Quality of Tropical Acid-Sand Soils

Cited by 2 publications

References 10 publications

Soil Distribution in Nepal

Soil Distribution in Nepal

Physical assessment of a Mollisol under agroecological managements at Quillota valley. Mediterranean Central Chile

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