Kondisi dan Pengelolaan Kawasan Hulu DAS Belawan Hubungannya dengan Tingkat Bahaya Erosi pada Lahan Budidaya di Kabupaten Deli Serdang

The Belawan watershed is located at Deli Serdang Regency and Medan City, with mountainous terrain (70.58%), hills (35.15%), and slopes (20.28%). This study aims to identify the risk of erosion of cropland, especially coffee, corn, and chocolate, to identify more appropriate erosion control measures to achieve regional protection objectives . The research was conducted in the upstream Belawan watershed in the Sibolangit, Bandar Baru, and Kutalimbaru regions from September 2020 to December 2020. The magnitude of the erosion hazard value is analysed using the USLE approach . The USLE method on the amount of erosion is determined by 5 (five) factors, these factors are the rainfall erosion factor (R); soil erodibility factor (K); vegetation factor (C); conservation factor (P) and topography factor (LS). The erosion rate valuefor land use types varies from 95.27 tons/Ha.yr to 232.43 tons/Ha.yr. The amount of erosion that can be tolerated in land use for coffee, corn, and cacao ranges from 19.94 tons/Ha.yr to 39.79 tons/Ha.yr. The risk level for erosion in coffee areas 4.83 and 10.86 with high criteria and very high criteria; in areas of corn event 6.29 and 8.38 with high criteria and in brown areas 5.24 and 3.88 with high criteria and medium criteria.

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Abundance and Distribution of Malaria Vectors in Various Aquatic Habitats and Land Use Types in Kakamega County, Highlands of Western Kenya

Ethiopian Journal of Health Sciences ◽

10.4314/ejhs.v31i2.7 ◽

2021 ◽

Vol 31 (2) ◽

Author(s):

Kitungulu Nicholas ◽

Guyah Bernard ◽

Ndenga Bryson ◽

Kipcho Mukabane ◽

Mark Kilongosi ◽

...

Keyword(s):

Land Use ◽

Vector Control ◽

Malaria Vector ◽

Control Measures ◽

Malaria Vectors ◽

Effective Control ◽

Aquatic Habitats ◽

Western Kenya ◽

Land Use Types ◽

Abundance And Distribution

BACKGROUND: Management of malaria transmission relies heavily on vector control. Implementation and sustenance of effective control measures require regular monitoring of malaria vector occurrences, species abundance and distribution. The study assessed mosquito larval species composition, distribution and productivity in Kakamega County, western Kenya.METHODS: A cross-sectional survey of Anopheline larvae was conducted in various aquatic habitats and land use types in Kakamega County, highlands of western Kenya between the month of March and June 2019.RESULTS: One thousand, five hundred and seventy six aquatic habitats were sampled in various land use types. The mean densities of An. gambiae s.l (46.2), An. funestus (5.3), An. coustani (1.7), An. implexus (0.13) and An. squamosus (2.0) were observed in fish ponds, burrow pits, drainage ditches, and tire tracks, respectively. High mean densities of An. gambiae s.l was reported in farmland (20.4) while high mean abundance of An.funestus s.l (8.2) and An. coustani s.l (4.0) were observed in artificial forests.CONCLUSION: The study revealed that the productivity of anopheles larvae varied across various habitat types and land use types. Therefore, treatment of potential breeding sites should be considered as an additional strategy for malaria vector control in Kakamega County, western Kenya.

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CHANGES AND CORRELATIONS IN LAND-USE STRUCTURE WITHIN THE ADMINISTRATIVE BOUNDARIES OF A TOWN – A CASE STUDY

Acta Scientiarum Polonorum Administratio Locorum ◽

10.31648/aspal.4935 ◽

2020 ◽

Vol 19 (1) ◽

pp. 61-68

Author(s):

Patrycja Szarek-Iwaniuk

Keyword(s):

Land Use ◽

Urban Space ◽

Urban Areas ◽

Geographic Location ◽

Spatial Change ◽

Land Use Types ◽

The Town ◽

Very High ◽

Made In

Urban areas continuously evolve. The main drivers of spatial change in towns and cities are urbanization processes. The aim of this study was to analyze changes in the process of urban development spanning a period of 30 years and to analyze the correlations between the distribution of various land-use types. The results were compared with the land use balance made in the 1970s. In the present study, the distribution of different land use categories in urban space was mapped with very high accuracy. The results of this study validate that areas with specific functions tend to coexist, whereas other areas exist separately in different parts of the town. Active urbanization processes were observed in the analyzed town. Developed and urbanized areas (mainly with residential functions) were significantly expanded in the analyzed period. The spatial and functional structure of the analyzed town and its development potential within the administrative boundaries are influenced by the geographic location, which significantly obstructs further expansion of developed areas. The proposed methodology can be used to improve land management in urban areas and can be implemented in other spatial units.

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LAND USE TYPES AND SOIL CHARACTERISTICTS: A CASE STUDY IN HUONG VINH COMMUNE, HUONG TRA TOWN, THUA THIEN HUE PROVINCE

HUE UNIVERSITY JOURNAL OF SCIENCE EARTH SCIENCE AND ENVIRONMENT ◽

10.26459/hujos-ese.v126i4b.4121 ◽

2017 ◽

Vol 126 (4B) ◽

Author(s):

Trần Thanh Đức

Keyword(s):

Land Use ◽

Sweet Potato ◽

Soil Analysis ◽

Soil Characteristics ◽

Low Ph ◽

Clay Loam ◽

Total N ◽

Land Use Types ◽

Total P

This research carried out in Huong Vinh commune, Huong Tra town, Thua Thien Hue province aimed to identify types of land use and soil characteristics. Results showed that five crops are found in Huong Vinh commune including rice, peanut, sweet potato, cassava and vegetable. There are two major soil orders with four soil suborders classified by FAO in Huong Vinh commune including Fluvisols (Dystric Fluvisols, Gleyic Fluvisols and Cambic Fluvisols) and Arenosols (Haplic Arenosols). The results from soil analysis showed that three soil suborders including Dystric Fluvisols, Gleyic Fluvisols and Cambic Fluvisols belonging to Fluvisols were clay loam in texture, low pH, low in OC, total N, total P2O5 and total K2O. Meanwhile, the Haplic Arenosols was loamy sand in texture, poor capacity to hold OC, total N, total P2O5 and total K2O

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Bat Community Responses to Structural Habitat Complexity Resulting from Management Practices Within Different Land Use Types — A Case Study from North-Eastern Germany

Acta Chiropterologica ◽

10.3161/15081109acc2018.20.2.010 ◽

2019 ◽

Vol 20 (2) ◽

pp. 387 ◽

Cited By ~ 4

Author(s):

Nicole Starik ◽

Thomas Göttert ◽

Emanuel Heitlinger ◽

Ulrich Zeller

Keyword(s):

Land Use ◽

Habitat Complexity ◽

Management Practices ◽

Community Responses ◽

Eastern Germany ◽

Land Use Types ◽

North Eastern ◽

Structural Habitat

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THE IMPACT OF DIFFERENT URBAN LAND USE TYPES ON AIR POLLUTION IN THE MEGACITY OF SÃO PAULO

Revista Presença Geográfica ◽

10.36026/rpgeo.v7i1.5366 ◽

2020 ◽

Vol 7 (1) ◽

pp. 91

Author(s):

Júlio Barboza Chiquetto ◽

Maria Elisa Siqueira Silva ◽

Rita Yuri Ynoue ◽

Flávia Noronha Dutra Ribieiro ◽

Débora Souza Alvim ◽

...

Keyword(s):

Land Use ◽

Air Pollution ◽

Urban Land ◽

Sao Paulo ◽

Urban Land Use ◽

São Paulo ◽

Land Use Types ◽

The Impact

A poluição do ar é influenciada por fatores naturais e antropogênicos. Quatro pontos de monitoramento (veicular, comercial, residencial e background urbano (BGU))da poluição do ar em São Paulo foram avaliados durante 16 anos, revelando diferenças significativas devidoao uso do solo em todas as escalas temporais. Na escala diurna, as concentrações de poluentes primários são duas vezes mais altas nos pontos veicular e residencial do que no ponto BGU, onde a concentração de ozonio (O3) é 50% mais alta. Na escala sazonal, as concentrações de monóxido de carbono(CO) variaram em 80% devido ao uso do solo, e 55% pela sazonalidade.As variações sazonais ede uso do solo exercem impactos similares nas concentrações de O3 e monóxido de nitrogênio (NO). Para o material particulado grosso (MP10) e o dióxido de nitrogênio(NO2), as variações sazonais são mais intensas do que as por uso do solo. Na série temporal de 16 anos, o ponto BGU apresentou correlações mais fortes e significativas entre a média mensal de ondas longas (ROL) e o O3 (0,48) e o MP10 (0,37), comparadas ao ponto veicular (0,33 e 0,22, respectivamente). Estes resultados confirmam que o uso do solo urbano tem um papel significativo na concentração de poluentes em todas as escalas de análise, embora a sua influência se torne menos pronunciada em escalas maiores, conforme a qualidade do ar transita de um sistema antropogênico para um sistema natural. Isto poderá auxiliar decisões sobre políticas públicas em megacidades envolvendo a modificação do uso do solo.

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