Land Science https://j.ideasspread.org/index.php/ls <p><em>Land Science </em>is an international and crossdisciplinary open access journal of land use/land change, land management, land system science and landscape, etc, published by&nbsp;IDEAS SPREAD. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.</p> en-US <p>Copyright for this article is retained by the author(s), with first publication rights granted to the journal.<br>This is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).</p> ls@ideasspread.org (Lucas Williams) service@ideasspread.org (Technical Support) Fri, 15 Nov 2019 14:17:51 +0800 OJS 3.1.0.0 http://blogs.law.harvard.edu/tech/rss 60 Quantitative Assessment of Hab Watershed Using Geoinformatics https://j.ideasspread.org/index.php/ls/article/view/353 <p class="text"><span lang="EN-US">Morphometric assessment of the watersheds is considered highly critical to appraise its hydrological characteristics, such as, general geology, structure, geomorphology and climate conditions. In this study, morphometric analysis of Hab Watershed has been carried out through Geospatial Technology (RS &amp; GIS) in a systematic manner to examine its Geo-hydrological characteristics. The drainage network of Hab is typically dendritic and semi-dendritic indicating its heterogeneous lithology. Recent study reveals increase in stream order, substantially decreases the stream total length. drainage density of the Hab Watershed indicates the characteristics of its typical soil. Drainage texture value for Hab watershed is 0.18. Low drainage density value reveals that the region has a permeable and porous subsurface material with low relief. The shape of the basin has been observed as quite elongated. The findings of this study reveal that GIS based morphometric analysis is highly effective tool for geo-hydrological study of watersheds.</span></p> ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 https://j.ideasspread.org/index.php/ls/article/view/353 Fri, 15 Nov 2019 00:00:00 +0800 Geo-Spatial Heat Index and Comfort Analysis of Port Harcourt City: An Approach to Environmental Health Care Delivery https://j.ideasspread.org/index.php/ls/article/view/405 <p>This research examined the geo-spatial heat index and comfort analysis of Port Harcourt city as an approach to environmental health care delivery. Temperature data were generated from different land use types across days of the week in both wet (April to September) and dry (October to March) seasons. Heat index was derived when air temperature and dew point temperature of the locations were corresponded in the heat index chart or data logger calculator. Findings indicate that the city had experienced danger levels of discomfort above 41oC in the late dry season of January, February and March showing that heat cramps and heat exhaustion as well as heat stroke were probably to occur with continued activity of a person. On the other hand, early dry season of October, November and December had the best human comfort period of &lt; 26.7oC temperature except Thursday and Friday with caution level of 27 to 32°C in the city of Port Harcourt; though fatigue was possible as prolonged exposure could result to heat cramps. High residential/commercial and administrative/industrial land uses had the highest human discomfort indicating that those living in these land use types would suffer extreme hazard of heat stroke. However, recreation and rural sites were the most comfortable land use types. Young children and old people are generally in more danger to the heat effects as the city has exceeded the 27oC thermal comfort threshold. It is therefore recommended that city planners and development practitioners should implement urban green policy of tree planting with special attention to residential/commercial and administrative/industrial areas without further delay in order to cushion the deadly menace of urban heat in Port Harcourt city and its environs.</p> Nwaerema Peace, Bridget Edewede Diagi, Ajiere Suzan ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 https://j.ideasspread.org/index.php/ls/article/view/405 Thu, 12 Dec 2019 12:24:59 +0800 Effects of Piers on Water Recession on the Southern Shores of Winam Gulf, Homa- Bay County, Kenya https://j.ideasspread.org/index.php/ls/article/view/414 <p>Piers are important man-made water vessel landing facilities in lakes and seas. A study on the effects of piers on water recession was conducted on the Southern shores of Winam Gulf of lake Victoria, Homa Bay County in Kenya. It was conducted in three pier points namely Kendu Bay, Kowour/Homa Lime and Homa Bay. The study aimed at explaining a phenomenon whereby the Western side of the piers on the Southern shores of the gulf, having more water recession than on their Eastern side. This unique phenomenon has not been sufficiently researched on hence, instigated the research. It collected data on the length of recession at the sides of the piers, directions of water currents flow based on devised simple current simulator and empirical studies. Google map and Landsat map techniques were used for aerial data collection. Ground truthing was carried out to corroborate the findings of the aerial data based on physical ground measurement and observation. The result had it that the sides of the piers facing currents directly were more recessed than the opposite sides. Homa Bay pier had its Western side 38m shorter than the Eastern side which had only receded 2m. Kowuor/Homa Lime pier had its Northern side 32m more recessed than the Southern side. The drenching works at Kendu Bay pier at the time of study, made it impossible to accurately measure its sides under recession. However, it showed the same trend based on Landsat and Google maps data. The data were presented using photographs, ‘current rose,’ maps and diagrams.</p> Otieno, J., Otieno, A. C. ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 https://j.ideasspread.org/index.php/ls/article/view/414 Tue, 24 Dec 2019 00:00:00 +0800 Assessing Urban Growth Dynamics and Depletion of Agricultural Land Use in Akure Region, Nigeria https://j.ideasspread.org/index.php/ls/article/view/416 <p>This study examined the Akure urban growth dynamics and the impact on agricultural land use in the region between 1985 and 2014. It makes use of Aerial Imagery Interpolation (AII) of Landsat imagery of 1986, 2002, 2007 and 2014 to determine LULC change pattern, the extent and direction of the expansion. As at 1986, only 5.1% (6384 ha.) of land area was developed while over 90% were covered with thick (64.5%) and light (30.33%) vegetation which were lands used for agricultural purposes. By 2014, the built-up area had increased to 26.33% while the thick vegetation reduced drastically to 15.6%. Further investigation revealed that the growth dynamics and loss of agricultural land use in the region were products of increased population and continued urbanization process. There were incompatible conversions in LULC and unguided expansions leading to undue encroachment into green areas at the suburbs. With the aid of Markov chain model, the trend was predicted over a period of 20 years (2014-2034). Variability in this relationship suggests the need of concerted urban growth management efforts by different stakeholders in urban planning to check the shoddy expansion with a view to securing agricultural lands for sustainable food security in the region.</p> J.O. Owoeye ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 https://j.ideasspread.org/index.php/ls/article/view/416 Thu, 26 Dec 2019 00:00:00 +0800 Comparative Analysis of the Physical and Chemical Properties of Uzbekistan's Basalts and Ways of Solutions to the Problems of Choice of Raw Processing Directions https://j.ideasspread.org/index.php/ls/article/view/428 <p class="text"><span lang="EN-US">This article highlights the common use of petrographic processes in basalt processing. At present, basalt is being processed by liquefaction only. Heat fibers, tiles, cement, fittings, and nets are taken from the basalt. For this reason this article states that the range of products to be purchased is small. And to increase the assortment, it is proved by the fact that basalt basin should not be confined to liquefied processing. Chemical composition of basalt. Depending on the chemical composition of the basalt, the technology of their processing is selected and determined. The article is based on the same principle that the dry method of drying basalt without liquefaction is put forward. Below are the names of products that can be obtained on dry bases processing. This is justified by the fact that it increases the range of basalt products. However, it is advisable to follow two methods of basalt processing in the future. These methods, which are recommended by the authors, have undergone a production trial and received positive assessments; the test report has also been presented.</span></p> Nurmatov J. T., Kurbanov A. A., Rashidova R. K. ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 https://j.ideasspread.org/index.php/ls/article/view/428 Mon, 30 Dec 2019 00:00:00 +0800