scholarly journals Alih Fungsi Lahan dan Curah Hujan terhadap Perubahan Hidrologi Sub Das Samin

2017 ◽  
Vol 1 (1) ◽  
pp. 13
Author(s):  
Nining Rahayu ◽  
Sutarno Sutarno ◽  
Komariah Komariah

<p>Samin sub-watershed is located in the district of Karanganyar and Sukoharjo regency. Every year an increasing number of people in Samin sub-watershed can inflict problems such as the seizure of land use and the amount of available water resources. This study purpose to analyzed the influence of land conversion and rainfall to hydrology conditions Samin sub-watershed in 2005-2015. This research used descriptive exploration method. The study population was the whole unit of land use in the Samin sub-watershed. Data collection techniques used collection of  secondary data from  BPS  Karanganyar-Sukoharjo regency and  watering hall.  Data  were analyzed using correlation analysis of land use and rainfall on hydrology conditions Samin sub-watershed. The results showed that the wetland and forest land decreased by an average of 44,76 ha-1year and 102,5 ha-1year. Residential land, fields and plantations increased by an average of 26,8ha-1year, 54,07ha-1year and 26,82ha-1year. In period 2005-2010 and 2011-2015, Samin sub-watershed has declined average on annual charge (-3.117,42 m3/second), value of coefficient run-off (-0,11), sedimentation (-0,01 mm) and increase average on value of  coefficient of river regime (+91,02) and CVcharge  (+0,35). Results of statistical analysis of correlation showed that, decline in wetland, forest and increased fields affect the increase coefficient of river regime. Decreased forest land also increased of fields land and plantations affect the  increase of  Coefficients of  Variants (CVcharge). Decreased forest land  affects decreased run-off coefficient, sedimentation and annual discharge.</p>

2022 ◽  
Vol 7 (2) ◽  
pp. 173-184
Author(s):  
Ani Apriani ◽  
Bayurohman Pangacella Putra

The occurrence of landslides can not be separated from conditions that are prone to landslide movements such as steep slopes and high rainfall. The occurrence of landslides is also exacerbated by the indiscipline of the community in using land according to its function, which is called land conversion which can be a trigger factor for landslides. Conducting research on land use change is important to see the impact caused by human activities. The purpose of this study was to analyze the effect of land conversion on landslide hazard levels in Samigaluh District, Kulon Progo Regency. The method in this research was descriptive quantitative using primary data, namely field surveys and secondary data collection. The steps on this research were conducting field observations about the occurrence of land conversion and then retrieving level of landslide hazard at the observation point of land use change. Data analysis was performed using ordinal logistic regression. The result of the analysis showed that the p value (0.036) <0.05 which meant H0 was rejected. Thus, at the 95% confidence level it could be said that the variable of land use change affected the level of landslide hazard in Samigaluh District, Kulon Progo Regency. This output could be considered for the community to use the land according to its function.  Key words: Land Function Change; Landslide; Ordinal


2014 ◽  
Vol 8 ◽  
pp. 21-30 ◽  
Author(s):  
Md Abdul Halim ◽  
Md Mizanoor Rahman ◽  
Md Zahidul Hassan

Bangladesh is a land scarce country where per capita cultivated land is only 12.5 decimals. It is claimed that every year about one percent of farm land in the country is being converted to non-agricultural uses. The study is based mainly on field survey covering 2 villages (Narikel Baria and Baze Silinda) from 10 sub-urban villages around Rajshahi City Corporation under Paba Upazila of Rajshahi district. The study area was selected purposively and the respondents of this research work were selected randomly. The major focus was on to mention the general land use pattern of the area, estimates the agricultural land conversion besides determining the causes and consequences affecting such conversion. Both Narikel Baria and Baze Silinda villages were selected as study area because of its relatively higher growth in infrastructure. In order to fulfill the goal of this study, primary and secondary data were collected from various sources and to analyze and process of collected data the SPSS, Excel and Arc GIS software were used. Different types of descriptive statistics were applied for representing the analyzed data. It is observed that the land conversion form agriculture to non-agriculture allied in recent time is more than the previous time due to gradually increasing land demand in housing and relevant services which invites adverse impact on agricultural land as well as its dependent population. So, it is necessary to take integrated land-use planning to offer better options for the fulfillment of land demand both of housing and agricultural sectors. DOI: http://dx.doi.org/10.3329/jles.v8i0.20136 J. Life Earth Sci., Vol. 8: 21-30, 2013


2020 ◽  
Vol 16 (3) ◽  
pp. 151
Author(s):  
Muhammad Iqbal Tawakkal ◽  
Akhmad Rizali ◽  
Anik Larasati ◽  
Adha Sari ◽  
Purnama Hidayat ◽  
...  

<p>Hymenoptera is one of the four largest insect orders in the world, one of which is its role as a natural enemy (parasitoids, predators). Land conversion can affect the diversity and composition of the parasitoid Hymenoptera and its ecological role. This study aims to examine the effect of land use types on the diversity and composition of hymenopterans parasitoid in Jambi. The study was conducted on various types of land use in the Harapan Forest landscape and Bukit Duabelas National Park (TNBD), Jambi Province including forests, rubber forests, oil palm plantations, and rubber plantations. Insect sampling was conducted from March to September 2013, using fogging techniques. A total of 14,258 hymenopteran parasitoid individuals consisting of 30 families were obtained from all study sites. Encyrtidae, Braconidae, Aphelinidae, Eulophidae, Scelionidae, Ceraphronidae, and Platigasteridae families are found in high abundance. Oil palm land use types are found to have different parasitoid compositions compared to other land use types, while forest and rubber forest land use types have high species composition. The results of this study indicate that the type of land use affects the diversity and composition of hymenopteran parasitoid species.</p>


Author(s):  
Aditya Dwifebri Christian Wibowo ◽  
Mahawan Karuniasa ◽  
Dwita Sutjiningsih

Changes in land use in the Cikapundung watershed, ie changes in forest land to built-up land, have an impact on the quantity of river water. Changes in land use in the Cikapundung River catchment are not ideal conditions for absorbing water. If land conversion is not controlled, it can have a large impact on reducing the availability of water resources for subordinate areas or what is called water scarcity. Analysis that takes into account land use and discharge can be done with several hydrological analysis methods, one of them is the Soil Conservation Service Curve Number (SCS-CN) method. Based on the calculation, the CN value was changed in 2014 from 57.275 to 62.591 where land cover changes began to occur.   Keywords: land use, river water, water scarcity, hydrology, CN value


2004 ◽  
Vol 13 (2) ◽  
Author(s):  
Su Ritohardoyo

Forest people land use pratices with economic and ecological orientation have been developed in the vicinity of forest areas. Nevertheless, policy makers view this development as detrimental to the forest it self. Forestry programs directed to accommodate public participation are uniformly designed and implemented, ignoring the physical and social variantion of rural areas. Thus there is a need for research on spatial variation of the social forestry program especially related to its success and impact on welfare. The research is carried out in Yogyakarta speial province employed a survei method and spatial approach. Stratified cluster sampling is used on the basis of variations in physiographic characteristics. Secondary data are also collected in forms of literatures and previous research in the field. Primary data are obtained through a structured interview using a set of questionnaires. Data are analyzed using simple tabulation method as well as statistical techniques.The research shows that in general people forest land use has been sucessfully implemented in the province. It is important to note that a more successfull implementation of people forest land use is found in the private rather than government initiated forest. In the less accessible areas people forest land use activities are much more successfull than in the accessible ones. Social forestry land use in the volcanic slope physiography is much better than that in either undulating or karst areas. Among important factors affecting the success of people forest land use are land ownership, education level, technology, land accessibility and percentage of plant growth. It is also confirmed that accessibility is the most important factor affecting the success of an people forest land use. The research also reveals that people forest land use has been very important in improving the farmers welfare. A composite indicator shows that the welfare of farmers is much improved after the adoption of people forest land use, with the highest achievement is obtained by farmers in the volcanic slopes.


2019 ◽  
Vol 16 (3) ◽  
pp. 269-279
Author(s):  
Vitor Hugo da Silva Vaz ◽  
Jorge Maikel Alves Batista ◽  
Ana Eleonora Almeida Paixão

Purpose This study aims to analyze the correlation between the investments in the Brazilian Space Agency (BSA) and the patenting process. Design/methodology/approach The methodology used was a statistical analysis through correlation and linear regression between the secondary data of investments made by the federal government, retrieved from the Transparency Portal, in the BSA and the patenting process, taking into consideration the number of invention, utility model and certificate of addition of invention. Findings After a brief presentation of the emergence of innovation and patent applications with the investments of governments in space agencies, this study presents the analysis of information in different times of investment that showed positive correlation between the two variables adopted. Originality/value One can point to the value of this study as strategic investments in space agencies to boost the filing of patents in a nation in the most diverse areas.


Widya Accarya ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 51-62
Author(s):  
I Made Kartika ◽  
I Gede Sujana ◽  
Alquinus Jehapu

Abstrak Canggu adalah sebuah desa yang terletak di kabupaten Kuta Utara, Kabupaten Badung sebagai Daerah Pengembangan Badung Tengah yang memiliki kebijakan mempertahankan Badung Tengah sebagai daerah pertanian dalam arti luas dan mencegah konversi sawah. Pertanyaan penelitian dari penelitian ini adalah tentang dampak pariwisata terhadap konversi lahan. Pemilihan desa Canggu sebagai lokasi penelitian karena desa Canggu berada di tengah-tengah wilayah Badung sebagai daerah pertanian, alam dan budaya sebagai semangat pariwisata desa Canggu, desa Canggu dipengaruhi oleh pembangunan fasilitas akomodasi. Jenis data dalam penelitian ini adalah sumber data kualitatif dan kuantitatif dari data primer dan sekunder. Data penelitian ini dikumpulkan melalui wawancara dan studi kepustakaan. Penentuan informan penelitian ini dimulai dengan menentukan informan pertama dan informan kunci. Teknik analisis data penelitian ini adalah analisis deskriptif kualitatif. Menurut hasil penelitian di desa Canggu didapat hasil sebagai berikut pengembangan pariwisata berdampak pada peningkatan konversi lahan pertanian, perubahan penggunaan lahan juga berdampak pada perubahan sosiokultural. Adapun lokasi penelitian ditentukan berdasarkan perkembangan pariwisata terhadap alih fungui lahan, hasil dari penelitian ini perkembangan pariwisata terhadap alih fungsi lahan berdampak pada kesejahtraan masyarakat Desa Canggu. Lahan yang dialih fungsikan dibangun Hotel, Homestay, Villa, Restoran, Laundry dan lain sebagainya yang menunjang ketertarikan wistawan, untuk berwisata ke Desa Canggu.  Alih fungsi lahan merupakan suatu tolok ukur untuk meningkatkan pendapatan ekonomi warga Desa canggu. Hal ini menyebabkan minat masyarakat menjadi meningkat untuk mengubah fungsi lahan mereka sebagai media penghubung perkembangan pariwisata tersebut. Faktor lain yang menyebabkan perubahan alih fungsi lahan di Desa Canggu adalah tingginya nilai permintaan dari wisatawan terhadap vasilitas yang disediakan. Kata kunci: Pariwisata dan alih fungsi lahan   Abstract Canggu is a village located in North Kuta district, Badung Regency as the Central Badung Development Area which has a policy of maintaining Central Badung as an agricultural area in the broad sense and conversion of rice fields. The research question of this research is about research on land conversion. The selection of the Canggu village as a research location is because the Canggu village is in the middle of the Badung area as an agricultural, natural and cultural area such as the spirit of tourism in the Canggu village, the Canggu village works with the construction of recreational facilities. The type of data in this study is the source of qualitative and quantitative data from primary and secondary data. Research data were collected through interviews and library research. The determination of the informants of this study begins with determining the first informant and key informant. The data analysis technique of this research is descriptive qualitative analysis. According to the results of research in the village of Canggu obtained the following results the development of tourism has an impact on increasing agricultural land conversion, land use changes also have an impact on sociocultural change. The research location is determined based on the development of tourism on land use change, the results of this study the development of tourism on land use change has an impact on the welfare of the people of Canggu Village. The land that has been converted has been built by hotels, homestays, villas, restaurants, laundry and others that support the interests of tourists, for a trip to Canggu Village. Transfer of land functions is a benchmark to increase the economic income of residents of Canggu Village. This causes the interest of the community to increase to change the function of their land as a media liaison with the development of tourism. Another factor causing changes in land use change in Canggu Village is the high value of requests from tourists for the facilities provided. Keywords: Tourism and land use change


Author(s):  
Sipei Pan ◽  
Jiale Liang ◽  
Wanxu Chen ◽  
Jiangfeng Li ◽  
Ziqi Liu

A sound ecosystem is the prerequisite for the sustainable development of human society, and the karst ecosystem is a key component of the global ecosystem, which is essential to human welfare and livelihood. However, there remains a gap in the literature on the changing trend and driving factors of ecosystem services value (ESV) in karst areas. In this study, Guizhou Province, a representative region of karst mountainous areas, was taken as a case to bridge the gap. ESV in the karst areas was predicted, based on the land use change data in 2009–2018, and the driving mechanisms were explored through the gray correlation analysis method. Results show that a total loss of CNY 21.47 billion ESV from 2009 to 2018 is due to the conversion of a total of 22.566% of the land in Guizhou, with forest land as the main cause of ESV change. By 2025 and 2030, the areas of garden land, water area, and construction land in Guizhou Province will continue to increase, whereas the areas of cultivated land, forest land, and garden land will decline. The total ESV shows a downward trend and will decrease to CNY 218.71 billion by 2030. Gray correlation analysis results illuminate that the total population and tertiary industry proportion are the uppermost, among all the driving factors that affect ESV change. The findings in this study have important implications for optimizing and adjusting the land use structure ecological protection and will enrich the literature on ESV in ecologically fragile areas.


2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Mohammed Adam A Hamad ◽  
Adam Elradi M Ali ◽  
Mohamed Atta Ali Abdallh

This study was conducted at Wad Medani Great Locality, Sudan- season 2016. The study attempts to assess the components that transferring agricultural extension services to the farmers involving services centers, also to assess the old components through the links between each other’s, type of the link, and information transferring cost. The primary data were collected from a field surveys using a well-structured questionnaire. Secondary data was collected from books and scientific journals. The quota sample technique was used and 322 farmers were selected as the study population. Statistical Package for Social Sciences was used for data analysis focusing on descriptive statistics and correlation analysis. Results indicated that 64% of the respondents have landowner, 70% of their agricultural experience less than 15 years, and 79% Invested in cotton, corn, wheat, and peanuts, and 76%, 68%, 75%, and 71% of the respondents their source of fertilizer, fertilizer information, pesticides, and pesticides information were service centers respectively. 71% of the farmers assess that their links with extension were strong- direct- official, 62% and 92% of the respondents stated the personal method was used for delivering information by extension is its and the service centers respectively. Services centers were quick response partners and extension was the less cost. Results of correlation analysis showed that the link with extension had high significant with the source of seeds (.011) (R=-.142), and highly significant with the source of fertilizer (.000) the value (R=.317), fertilizer information, pesticides, and pesticides information (.000) the value (R=.271). The result of the regression test of the farmers showed a high significant link with the extension (.487 beta). The research recommended information should be transferred to all agricultural partners; Training sessions have to be held to all extension officers and ASCs workers, using more than one approach for conducting the extension process.


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