Effects of Land Use on Soil Physical and Chemical Properties in Akokwa Area of Imo State, Nigeria

The diversity and community distribution of soil bacteria in different land use types in Yangtze River Basin, Chongqing Municipality were studied by using Illumina MiSeq analysis methods. Soil physical and chemical properties were determined, and correlation analyses were performed to identify the key factors affecting bacterial numbers and α-diversity in these soils. The results showed that the soil physical and chemical properties of different land use types decrease in the order: mixed forest (M2) > pure forest (P1) > grassland (G3) > bare land (B4). There were significant differences in bacterial diversity and communities of different land use types. The diversity of different land use types showed the same sequence with the soil physical and chemical properties. The abundance and diversity of bacterial in M2 and P1 soils was significantly higher than that in G3 and B4 soils. At phylum level, G3 and B4 soils were rich in only Proteobacteria and Actinobacteria, whereas M2 and P1 soils were rich in Proteobacteria, Actinobacteria and Firmicutes. At genus level, Faecalibacterium and Agathobacter were the most abundant populations in M2 soil and were not found in other soils. Pearson correlation analysis showed that soil moisture content, pH, AN, AP, AK and soil enzyme activity were significantly related to bacterial numbers, diversity and community distribution.

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Influences of Land Use/ Cover Changes on Soil Properties in Rib Watershed, Ethiopia

10.21203/rs.3.rs-94151/v1 ◽

2020 ◽

Author(s):

Fentanesh Haile Buruso ◽

Zenebe Admasu Teferi

Keyword(s):

Land Use ◽

Soil Properties ◽

Chemical Properties ◽

Temporal Variations ◽

Natural Forest ◽

Physical And Chemical Properties ◽

Natural Forests ◽

Significant Difference ◽

Physical And Chemical ◽

And Chemical Properties

Abstract BackgroundThe decrease in the area under natural vegetation and its conversion into other types of use has resulted in resource degradation including soil quality loss. Soil properties response to changes in land use/ cover has shown spatial and temporal variations. Hence this study was carried out to examine the influence of land use/ cover changes on physical and chemical properties of the soils in Rib watershed. Soil samples were taken over three selected land use/ covers (natural forest, grazing and cultivated lands) in two agro- ecological zones (Dega and High Dega). Multivariate analysis of variance (MNOVA) and Pearson’s correlation was computed. ResultsThe study revealed that land use/ cover and altitude have influenced physical and chemical properties of the soil in the study watershed. Significant difference in distribution of soil texture, BD, OC, TN and pH among land use/ covers have been observed. Natural forest had higher OC, OC stock and TN than grazing and cultivated lands. The mean OC stock ranged from 188.32 t/ha in natural forest to 72.75t/ha in cultivated lands. Soil pH was slightly higher for natural forests and lower in the soils of grazing and cultivated lands. Significant difference (P<0.05) among the two agro ecologies were also observed in OC, Ca2+, clay, and silt.. ConclusionTherefore, land use/ cover changes have affected the concentration of TN, OC, increase soil acidity and compaction that can affect productive of soils and production of crops.

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Effect of Land Use Change on Selected Soil Physical and Chemical Properties in North Highlands of Iran

Journal of Applied Sciences ◽

10.3923/jas.2008.496.502 ◽

2008 ◽

Vol 8 (3) ◽

pp. 496-502 ◽

Cited By ~ 23

Author(s):

Mostafa Emadi ◽

Mehdi Emadi ◽

Majid Bagherneja ◽

Hamed Fathi ◽

Mahboub Saffari

Keyword(s):

Land Use ◽

Land Use Change ◽

Chemical Properties ◽

Physical And Chemical Properties ◽

Physical And Chemical ◽

And Chemical Properties

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Assessment of Basalt Soil Quality under Different Land Use Types in Bao Loc - Di Linh Area, Lam Dong Province

VNU Journal of Science Earth and Environmental Sciences ◽

10.25073/2588-1094/vnuees.4117 ◽

2017 ◽

Vol 33 (3) ◽

Author(s):

Thủy Nguyễn Thị ◽

Anh Thế Lưu

Keyword(s):

Land Use ◽

Chemical Properties ◽

Natural Forest ◽

Physical And Chemical Properties ◽

Forest Land ◽

Land Use Types ◽

Physical And Chemical ◽

Soil Unit ◽

And Chemical Properties

Basaltic soil is considered as the most advantageous soil unit in comparison with other units of the Central Highlands, that distributed mainly in the plateaus of Kon Plong, Kon Ha Nung, Pleiku, Buon Ma Thuot, M'Drak, Dak Nong and Di Linh - Bao Loc. Much of the basaltic soil in the Central Highlands has been used for cultivation of long-term industrial crops. Currently, due to massive forest destruction for developing long-term industrial trees in the basaltic soil in Bao Loc - Di Linh, the natural fertility of the basaltic soil has been remarkably reduced. The physical and chemical properties of the basaltic soil under different land use types have decreased sharply compared to basaltic soil under the natural forest. The average rate of decline of total organic matter content of plantation forest land is 16%, overused forest land is 44%, tea land is 46%, coffee land is 60% compared to the same soil unit under the natural forest. The cation exchange capacity (CEC), content of total nutrients and plant available nutrients under the land use types were also decreased significantly compared to the soil unit under the natural forest. The changes of physical and chemical properties of the basaltic soil with coffee cultivation was highest in comparison with other land use types. The organic matter and potassium are two limiting factors of the nutrients in the basaltic soil of the study area, especially for tea cultivation.

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