scholarly journals The Effect of Different Fire Regimes on Soil Properties in Wet Miombo woodlands of Zambia

2020 ◽  
Keyword(s):  
Soil Properties ◽  
Fire Regimes ◽  
Miombo Woodlands

scholarly journals Short-term responses of selected soil properties to clearing and cropping of miombo woodlands in central Zimbabwe

2013 ◽  
Vol 129 ◽  
pp. 75-82 ◽  
Author(s):  
F. Mapanda ◽  
S. Munotengwa ◽  
M. Wuta ◽  
P. Nyamugafata ◽  
J. Nyamangara
Keyword(s):  
Soil Properties ◽  
Miombo Woodlands ◽  
Short Term

Fire effects on geomorphology: what can we expect with climate change?

2020 ◽  
Author(s):  
Cathelijne Stoof
Keyword(s):  
Climate Change ◽  
Debris Flow ◽  
Soil Properties ◽  
Overland Flow ◽  
Complex Function ◽  
Fire Behavior ◽  
Fire Regimes ◽  
Fire Effects ◽  
Natural Process ◽  
Streamflow Generation

<p>Climate change is expected to alter fire regimes but also rainfall patterns. Fire is a natural process that removes vegetation and may affect soil properties, resulting in changes in overland flow and streamflow generation. Some fires cause erosion and may even cause destructive debris flow and other events, which can not only threaten lives and property but also leave lasting imprints in landscapes. The geomorphological response after fire events is a complex function of pre-fire landscape and vegetation properties, fire behavior and effects, and post-fire rainfall timing, duration and intensity. In this talk, I highlight these processes using examples of past events, and explore geomorphological response to fires in a future where both fire and rainfall may be be rather different.</p><p> </p>

Prediction of forest parameters and carbon accounting under different fire regimes in Miombo woodlands, Niassa Special Reserve, Northern Mozambique

2021 ◽  
Vol 133 ◽  
pp. 102625
Author(s):  
N.S. Ribeiro ◽  
Amanda Hildt Armstrong ◽  
Rico Fischer ◽  
Yeon-Su Kim ◽  
Herman Henry Shugart ◽  
...  
Keyword(s):  
Fire Regimes ◽  
Carbon Accounting ◽  
Miombo Woodlands

Vegetation responses to fire history and soil properties in grazed semi-arid tropical savanna

2018 ◽  
Vol 40 (3) ◽  
pp. 271 ◽  
Author(s):  
Gabrielle Lebbink ◽  
Rod Fensham ◽  
Robyn Cowley
Keyword(s):  
Soil Properties ◽  
Fire History ◽  
Fire Regimes ◽  
Fire Season ◽  
Individual Plant ◽  
Vegetation Composition ◽  
Mixed Effect ◽  
Total Species Richness ◽  
Floristic Patterns ◽  
Semi Arid

A long-term (1993–2016) fire experiment in the grazed semi-arid savanna of the Northern Territory was used to investigate the relative impacts of soil properties and fire history on vegetation composition and diversity in grassland and woodland habitats. Subtle variation in soil texture influenced vegetation composition and abundance independently of fire variables and was generally a more important control on floristic patterns. Total species richness, lifeform richness and the abundance and presence of many individual plant species declined with increasing clay content. Linear mixed effect models with combined habitat data, showed total richness and richness of annual and perennial forbs, annual grasses and legumes increased with more frequent fire. Perennial grass abundance and richness was not influenced by fire. Total and lifeform mean richness did not vary between two and four yearly or early and late burnt treatments. Richness and abundance was generally significantly higher on burnt blocks than unburnt blocks regardless of fire season or interval. These results suggest greater diversity after burning is a result of an increase in ephemeral species. However, the overall influence of fire on floristic patterns is relatively moderate and fire regimes may therefore be manipulated for other management imperatives, such as fauna conservation, carbon sequestration and pastoral productivity without substantial impacts on botanical values in semi-arid tropical savannas.

Applying the Method of Lagrange Multipliers to Derive an Estimator for Unsampled Soil Properties

2014 ◽  
Vol 11 (1) ◽  
pp. 15
Author(s):  
Set Foong Ng ◽  
Pei Eng Ch’ng ◽  
Yee Ming Chew ◽  
Kok Shien Ng
Keyword(s):  
Soil Properties ◽  
Lagrange Multipliers ◽  
Unbiased Estimator ◽  
Soil Property ◽  
Minimum Variance ◽  
Distance Method ◽  
True Value ◽  
A Site ◽  
Method Of Lagrange Multipliers ◽  
Inverse Distance

Soil properties are very crucial for civil engineers to differentiate one type of soil from another and to predict its mechanical behavior. However, it is not practical to measure soil properties at all the locations at a site. In this paper, an estimator is derived to estimate the unknown values for soil properties from locations where soil samples were not collected. The estimator is obtained by combining the concept of the ‘Inverse Distance Method’ into the technique of ‘Kriging’. The method of Lagrange Multipliers is applied in this paper. It is shown that the estimator derived in this paper is an unbiased estimator. The partiality of the estimator with respect to the true value is zero. Hence, the estimated value will be equal to the true value of the soil property. It is also shown that the variance between the estimator and the soil property is minimised. Hence, the distribution of this unbiased estimator with minimum variance spreads the least from the true value. With this characteristic of minimum variance unbiased estimator, a high accuracy estimation of soil property could be obtained.

AVAILABLE WAYS TO OPTIMIZE SOIL PROPERTIES IN APPLE ORCHARDS

2020 ◽  
Vol 16 (2) ◽  
pp. 41-63
Author(s):  
V.L. Zakharov ◽  
◽  
G.N. Pugachev ◽  
Keyword(s):  
Soil Properties ◽  
Apple Orchards

Geospatial comparison of three models to predict soil properties in semi-humid region of West Bengal, India

2018 ◽  
Vol 32 (5) ◽  
pp. 37
Author(s):  
Rajaram Majhi ◽  
Gouri Sankar Bhunia ◽  
Tapan Kumar Das ◽  
Pravat Kumar Shit ◽  
Rabindranath Chattopadhyay
Keyword(s):  
Soil Properties ◽  
West Bengal ◽  
Humid Region
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