Short-term effects of bench terraces on selected soil physical and chemical properties: landscape improvement for hillside farming in semi-arid areas of northern Ethiopia

2018 ◽  
Vol 77 (11) ◽  
Author(s):  
Shimbahri Mesfin ◽  
Gebeyehu Taye ◽  
Yohannes Desta ◽  
Birikti Sibhatu ◽  
Hintsa Muruts ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Northern Ethiopia ◽  
Arid Areas ◽  
Physical And Chemical Properties ◽  
Short Term ◽  
Physical And Chemical ◽  
Semi Arid ◽  
And Chemical Properties ◽  
Short Term Effects

scholarly journals Effects of short-term grazing prohibition on soil physical and chemical properties of meadows in Southwest China

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11598
Author(s):  
Guiqing Zhu ◽  
Chaoxiang Yuan ◽  
Hede Gong ◽  
Yanling Peng ◽  
Changjiang Huang ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Southwest China ◽  
Chemical Properties ◽  
Total Carbon ◽  
Average Height ◽  
Physical And Chemical Properties ◽  
Short Term ◽  
Subalpine Meadow ◽  
Physical And Chemical ◽  
And Chemical Properties

Background Grassland plays an important role in the ecosystem, but overgrazing harms the grassland system in many places. Grazing prohibition is an effective method to restore grassland ecosystems, and it plays a great role in realizing the sustainable development of grassland systems. Therefore, it is necessary to carry out research on the influence of regional grazing prohibition on the physical and chemical properties of different grassland systems. Methods In Potatso National Park, Southwest China, we selected experimental plots in the artificial grazing meadow area to study the effects of grazing prohibition on plant and soil indexes in subalpine meadows and swamp meadows. We investigated the biomass and species diversity of grazing prohibition treatment and grazing treatment plots and sampled and tested the soil index. The variation percentage was used to remove the original heterogeneity and yearly variation, allowing us to compare differences in plant index and soil index values between grazing prohibition and grazing treatments. Results Grazing prohibition increased the aboveground biomass, total biomass, total meadow coverage, average height, richness index, Shannon diversity index and evenness index and reduced the belowground biomass and root/shoot ratio in the subalpine meadow and swamp meadow. Additionally, grazing prohibition reduced the pH and soil bulk density and increased the soil total carbon, soil organic carbon, soil total nitrogen, soil hydrolyzable nitrogen, soil total phosphorus and soil available phosphorus in the subalpine meadow and swamp meadow. Nonmetric multidimensional scaling (NMDS) analysis showed that both plant indexes and soil indexes were significantly different between grazing and grazing prohibition treatments and between meadow types. Short-term grazing prohibition had a great impact on improving the fertility of meadow soil in the study area. We suggest that long-term and extensive research should be carried out to promote the restoration and sustainable development of regional grassland systems.

scholarly journals Short-Term Changes in Physical and Chemical Properties of Soil Charcoal Support Enhanced Landscape Mobility

2017 ◽  
Vol 122 (11) ◽  
pp. 3098-3107 ◽  
Author(s):  
Lacey A. Pyle ◽  
Kate L. Magee ◽  
Morgan E. Gallagher ◽  
William C. Hockaday ◽  
Caroline A. Masiello
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Short Term ◽  
Soil Charcoal ◽  
Physical And Chemical ◽  
Properties Of Soil ◽  
And Chemical Properties

Removal of Woody Debris from Logging Gaps Influences Soil Physical and Chemical Properties in the Short Term: A Study Case in Central Amazonia

2021 ◽  
Author(s):  
Alex de Sousa Trindade ◽  
João Baptista Silva Ferraz ◽  
Daniel DeArmond
Keyword(s):  
Coarse Woody Debris ◽  
Woody Debris ◽  
Chemical Properties ◽  
Energy Generation ◽  
Physical And Chemical Properties ◽  
Short Term ◽  
Debris Removal ◽  
Physical And Chemical ◽  
The Impact ◽  
And Chemical Properties

Abstract Generally, woody residues generated from logging remain on site, although recently, forest managers have been harvesting this material for energy generation. We evaluated the impact on an Oxisol’s physical and chemical properties after removal of residues (coarse woody debris, CWD) from logging-created gaps. The logging operations occurred on private timberland in the Central Amazon. Eighteen months after creation of the gaps, soil samples were taken up to 150 cm depth in each treatment: mature undisturbed forest (FOR), gaps with residues retained on site (RET), and gaps with removal of large branches greater than 10 cm in diameter that were from logging (REM). Clay content, up to 20 cm depth, was higher in RET and REM soils than in FOR soils. Soil bulk density values increased progressively from areas of FOR to RET and REM at 0–5 cm. The highest carbon and nutrient contents were observed in the 0–5 and 5–10 cm soil layers of RET. In the 10–30 cm depth, the contents of all nutrients, except phosphorus, were higher in REM soils. According to these short-term results, it is not possible to affirm categorically that the removal of CWD has a negative impact on the nutrient status of soils in gaps created by logging operations. Study Implications: This study aimed to investigate the influence of coarse woody debris removal for energy generation on soil nutrients in a logging area in the Amazonas state, Brazil. We compared three areas, one in which the residues were removed from the gaps, another where residues in gaps were retained, and one undisturbed natural forest as control. We found that coarse wood debris removal does not significantly change soil physical properties. On the other hand, removal accelerates leaching of nutrients to greater soil depths and leads to higher calcium contents in depths to 150 cm, although the soil phosphorus decreases after debris removal.

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