scholarly journals KAJIAN KERUSAKAN DAN KERUNTUHAN TUBUH BENDUNGAN AKIBAT PENGARUH BANJIR (STUDI KASUS : BENDUNGAN CIPAMINGKIS KAB. BOGOR)

2021 ◽  
Vol 14 (2) ◽  
pp. 113
Author(s):  
Heri Suherlan
Keyword(s):  
Land Use ◽  
Carrying Capacity ◽  
Rainy Season ◽  
Water Discharge ◽  
The Body ◽  
Rice Fields ◽  
The Impact ◽  
Damage Study

Land use in the vicinity of Cipamingkis Sub-watershed is currently very intensive, so that damage to land which is feared has an impact on the level of fertility and carrying capacity of the land, resulting in the danger of flooding, erosion and landslides in the rainy season, as well as a decrease in water discharge and lack of groundwater in the season dry. The impact of these conditions Cipamingkis Weir in Sukasirna Village, Jonggol District on April 20, 2017 there was a breakdown of the lighthouse and the body of the weir which was built since 1982, the dam irrigated 4579 Ha of rice fields, unable to irrigate and in the lower reaches of the dam a lot of damage, including: eroded riverbanks, damaged river cliffs, and part of the land cracked and landslides.Seeing the condition needs to be made a research on Cipamingkis Dam Damage Study. This handling is urgently needed to reduce and reduce the consequences caused in the process of activities that cause erosion and flooding.

scholarly journals Spatial Pattern Analysis of a Water-Related Ecosystem Service and Evaluation of the Grassland-Carrying Capacity of the Heihe River Basin under Land Use Change

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2658
Author(s):  
Rui Luo ◽  
Shiliang Yang ◽  
Yang Zhou ◽  
Pengqun Gao ◽  
Tianming Zhang
Keyword(s):  
Land Use ◽  
Ecosystem Services ◽  
Land Use Change ◽  
River Basin ◽  
Carrying Capacity ◽  
Animal Husbandry ◽  
Heihe River Basin ◽  
Heihe River ◽  
The Impact ◽  
The Heihe River Basin

A key challenge to the sustainability and security of grassland capacity is the protection of water-related ecosystem services (WESs). With the change of land use, the supply of aquatic ecosystem services has changed, and the grassland-carrying capacity has been affected. However, the correlation mechanism between WESs and the grassland-carrying capacity is not clear. In this study, we used the InVEST(Integrated Valuation of Ecosystem Services and Tradeoffs) model to evaluate the impact of land-use change on WESs, and made a tradeoff analysis between WESs and grassland-carrying capacity. Considering that the Heihe River Basin (HRB) was an important grassland vegetation zone, which was a milestone for the development of animal husbandry in China, HRB was taken as a case. The main findings are as follows: (1) the spatial distribution of WESs shows the dissimilation rule, the upper reaches are the main water yield area, the soil retention is weakening in the middle and lower reaches, and the pollution has further increased in the middle and upper reaches. (2) The carrying capacity of animal husbandry decreased in the upper reaches, increased in Shandan County and Zhangye City in the middle reaches, and decreased sharply in other regions. (3) There was a positive correlation between the livestock-carrying capacity and nitrogen export in 2018, which was increasing. As the change of land use has changed the evapotranspiration structure, WESs have undergone irreversible changes. Meanwhile, the development of large-scale irrigated farmland and human activities would be the source of a further intensification of regional soil erosion and water pollution. Therefore, it is necessary to trade off the WESs and animal husbandry under land-use change. This paper revealed how WESs changed from 2000 to 2018, the characteristics of the changes in the spatial and temporal distribution, and the carrying capacity. It aims to provide a scientific basis for coordinating the contradiction between grassland and livestock resources, improving the regional ecological security situation, and carrying out ecosystem management.

scholarly journals Smart Irigasi Berbasis Arduino Sebagai Kontrol Air Subak untuk Mempertahankan Ketahanan Pangan

2018 ◽  
Vol 5 (2) ◽  
pp. 94
Author(s):  
I Kadek Agus Wahyu Raharja ◽  
Fachri Zamzami ◽  
I Gede Feryanda Fransiska ◽  
I Gusti Ngurah Janardana
Keyword(s):  
Monitoring System ◽  
Rainy Season ◽  
Water Distribution ◽  
Irrigation System ◽  
Water Discharge ◽  
Dry Season ◽  
Rice Fields ◽  
Traditional Leader ◽  
Value Of Water ◽  
Solar Powered

Agriculture in Bali generally using Subak system as an irrigation system. This irrigation system is regulated by a traditional leader who is also a farmer in Bali. Water distribution is carried out according to the area of farmers land. The problems that can be happened on this irrigation system, such as the community that opens the floodgates to the rice fields, are not in accordance with the time provided by traditional leaders, and that can break the unity in the area. In addition, during the dry season the distribution of water is sometimes uneven because the availability of water in the dam does not meet the needs. So that Arduino-based Solar Powered Smart Irrigation is designed as one of the tools to facilitate the management of subak water distribution. The modeling made is to simulate 3 pieces of rice fields that are drained by water with the main source being the river and the source of the reserve in the form of a reservoir. This system is controlled based on the programmed time on the RTC module and the monitoring system uses the GSM SIM900 module. The data obtained is the value of water discharge in the rainy season of 2.090 L / s, the dry season of 11.18 L / s, and 0 L / s in the hard dry season.

scholarly journals The impact of land use changes on carrying capacity of sampean watershed in Bondowoso Regency

2018 ◽  
Vol 207 ◽  
pp. 012005
Author(s):  
S Sugiyarto ◽  
B Hariono ◽  
R Wijaya ◽  
P Destarianto ◽  
A Novawan
Keyword(s):  
Land Use ◽  
Carrying Capacity ◽  
Land Use Changes ◽  
The Impact

scholarly journals Overtourism: residents’ perceptions of tourism impact as an indicator of resident social carrying capacity - case study of a Spanish heritage town

2018 ◽  
Vol 73 (3) ◽  
pp. 277-296 ◽  
Author(s):  
Vanessa Muler Gonzalez ◽  
Lluis Coromina ◽  
Nuria Galí
Keyword(s):  
Literature Review ◽  
Social Exchange ◽  
Carrying Capacity ◽  
Theoretical Perspective ◽  
Demographic Variables ◽  
The Body ◽  
Willingness To Accept ◽  
Content Type ◽  
Social Carrying Capacity ◽  
The Impact

Purpose This paper aims to assess the value of impact perceptions as an indicator of social carrying capacity in the heritage town of Besalú, Spain. Additionally, it assesses the impact tourism dependence and other socio-demographic variables have on this indicator. Design/methodology/approach A literature review on social exchange theory (SET) and carrying capacity related to impact perceptions is presented. The method was a survey, with a questionnaire based on the literature review and in-depth interviews. The results have been analyzed statistically to determine the links between perceptions and socio-demographic variables. Using statistical tools, perceptions are compared to three indicators that have been used to determine capacity in literature: willingness to accept more tourism, tourism pressure and the tourist function index. Findings The willingness of residents to enter into, and remain, in an exchange relationship is affected primarily by tourism dependence, and to a lesser extent by gender and education. Additionally, impact perceptions do not correspond to a willingness to accept more tourists. The impacts of tourism on conservation show greater consensus, while impacts on the availability of space for residents show links to other capacity indicators. Originality/value This study enhances the body of knowledge on social carrying capacity in heritage towns, by focusing on a regionally prominent day-tripper heritage town facing high tourism pressure which is Besalú. From a theoretical perspective, this study attempts to merge carrying capacity and SET, thus linking sustainability to social exchange. It also highlights the importance of a gender-based perspective in sustainability.

scholarly journals Quantifying the impact of land-use changes at the event and seasonal time scale using a process-oriented catchment model

2004 ◽  
Vol 8 (1) ◽  
pp. 62-78 ◽  
Author(s):  
B. Ott ◽  
S. Uhlenbrook
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Intensity Distribution ◽  
Water Discharge ◽  
Land Use Patterns ◽  
Flood Peak ◽  
Land Use Scenarios ◽  
Natural Land ◽  
The Impact ◽  
Catchment Model

Abstract. For optimal protection and integrated management of water resources, it is essential to quantify the impact of land-use change on hydrological regimes at various scales. Using the process-based catchment model TACD (tracer aided catchment model, distributed) two land-use scenarios were analysed for the rural and mountainous Dreisam basin (258 km2): (i) an increase in urban area from 2.5% to 5%) and (2) a change in a natural land-use to a different kind of forest. The first scenario was executed using the land-use change modelling kit LUCK, which takes into account the topology of land-use patterns in their true positions. The TACD model simulated all hydrological processes both spatially and temporally (200 m x 200 m grid, hourly mode). For this study, physically-based modules for interception and evapotranspiration (Penman and Monteith approach) were introduced. The model was applied to the Dreisam basin with minimal calibration. Both an independent validation period and discharge in four nested sub-basins were modelled well without recalibration. Evapotranspiration patterns were simulated, successfully, both temporally and spatially. Increased urbanisation had an insignificant effect on the modelled single events and on the yearly water balance. Simulations of discharge from forest assuming natural land-use conditions indicated an increase in transpiration, a decrease in groundwater recharge and, consequently, in groundwater discharge (–15%), in surface water discharge (–4%), and in flood peaks (–22.7% and –7.3% for convective and advective floods, respectively). Land-use impact was also investigated by applying rainfall scenarios of different durations (12, 24, 48, and 72 hours), magnitudes (recurrence intervals of 1, 5, and 10 years) and distributions of rainfall intensity, i.e. maximum intensity at the beginning, middle or end of the event. Clearly, the intensity distribution has a greater influence on the simulated events than different land use scenarios. This indicated the importance of careful determination of the temporal intensity distribution for flood peak predictions. The use of the process-based model enabled analysis of the altered composition of internal runoff components. This demonstrated the potentially significant local effects of land-use change on flood runoff and water quality. Keywords: land-use change, predictions, process-based catchment modelling, flood modelling, evapotranspiration modelling TACD model, LUCK

scholarly journals Assessment of Terrigenous Nutrient Loading to Coastal Ecosystems along a Human Land-Use Gradient, Tutuila, American Samoa

Hydrology ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 18 ◽  
Author(s):  
Christopher Shuler ◽  
Daniel Amato ◽  
Veronica Veronica Gibson ◽  
Lydia Baker ◽  
Ashley Olguin ◽  
...  
Keyword(s):  
Land Use ◽  
Nutrient Loading ◽  
Water Discharge ◽  
Nitrogen Isotope ◽  
Nutrient Flux ◽  
American Samoa ◽  
Nutrient Concentrations ◽  
Human Land Use ◽  
The Impact

Anthropogenic nutrient loading is well recognized as a stressor to coastal ecosystem health. However, resource managers are often focused on addressing point source or surface water discharge, whereas the impact of submarine groundwater discharge (SGD) as a nutrient vector is often unappreciated. This study examines connections between land use and nutrient loading through comparison of four watersheds and embayments spanning a gradient of human use impact on Tutuila, a high tropical oceanic island in American Samoa. In each study location, coastal radon-222 measurements, dissolved nutrient concentrations, and nitrogen isotope values (δ15N) in water and in situ macroalgal tissue were used to explore SGD and baseflow derived nutrient impacts, and to determine probable nutrient sources. In addition to sampling in situ macroalgae, pre-treated macroalgal specimens were deployed throughout each embayment to uptake ambient nutrients and provide a standardized assessment of differences between locations. Results show SGD-derived nutrient flux was more significant than baseflow nutrient flux in all watersheds, and δ15N values in water and algae suggested wastewater or manure are likely sources of elevated nutrient levels. While nutrient loading correlated well with expected anthropogenic impact, other factors such as differences in hydrogeology, distribution of development, and wastewater infrastructure also likely play a role in the visibility of impacts in each watershed.

Comprehensive Regionalization Based on Evaluation of Resources Carrying Capacity in Hubei

2014 ◽  
Vol 1073-1076 ◽  
pp. 1494-1498
Author(s):  
Sai Ma ◽  
Jiang Feng Li ◽  
Feng Juan Wei
Keyword(s):  
Land Use ◽  
Simulation Model ◽  
Economic System ◽  
Water Resource ◽  
Carrying Capacity ◽  
Earth System ◽  
Land Area ◽  
Local Resources ◽  
Capacity Index ◽  
The Impact

This study evaluated resources carrying capacity as a foundation to regionalize Hubei. Firstly, system dynamics was used to build the simulation model of resources carrying capacity to evaluate the population can be carried. We divided the man-earth system into four subsystem: land use, water resource, environmental and socio-economic system. It turns out that Hubei can carry a population of 76.43million in 2010, 105.92million in 2020. And water resource carrying capacity surpasses other carrying capacity in 11 municipalities among 17 districts of Hubei. Secondly, carrying capacity index and carrying capacity per hectare were put forward to revise the calculation, in order to eliminate the impact of land area and population and reveal local resources endowment. In addition, this research applied hierarchical clustering to class 17 municipalities of Hubei and brought out five comprehensive zones.

scholarly journals ANALISIA HIDROGRAF SATUAN DAN WIND ROSE PLOTS PADA DAERAH ALIRAN SUNGAI SEKANAK

Jurnal Tekno ◽  
2020 ◽  
Vol 17 (2) ◽  
pp. 32-43
Author(s):  
Henggar Risa Destania ◽  
Achmad Syarifudin
Keyword(s):  
Land Use ◽  
Soil Type ◽  
Surface Runoff ◽  
Rainy Season ◽  
Control Point ◽  
Storage Conditions ◽  
Unit Hydrograph ◽  
Wind Rose ◽  
Retention Ponds ◽  
The Impact

Sekanak watershed is a basin in Palembang which is often affected by flood during the rainy season. The characteristics of the watershed by the impact of changes in land-use  by economic and settlement developments. Sekanak watershed has 3 retention ponds which have the function of accommodating temporary discharge during floods. The catchment capacity of the watershed soil type, storage conditions etc. Therefore we need an analysis of the transformation of rainfall data in the watershed into a flow at the watershed control point and an analysis of the transformation of runoff volume (effective rain) into a surface runoff hydrograph (unit hydrograph). Hydrographs measured at a watershed control point are the response or output from rain that falls on a watershed system. The size of the watershed depend on the watershed system. This is closely related in analyzing the availability of water that occurs in the watershed system.

scholarly journals The Impact of The Land-Use Changes on The Water Carrying Capacity in Kajen, Indonesia: A Spatial Analysis

2021 ◽  
Vol 887 (1) ◽  
pp. 012018
Author(s):  
A. Pugara ◽  
B. Pradana ◽  
D. A. Puspasari
Keyword(s):  
Land Use ◽  
Spatial Analysis ◽  
Carrying Capacity ◽  
Agricultural Land ◽  
Land Use Changes ◽  
Development Planning ◽  
Land Conversion ◽  
Planning Period ◽  
Dry Land ◽  
The Impact

Abstract Kajen Sub-District is the Capital of the Pekalongan Regency. This area is the center of activity that grows to be the urban area with trading and services as the economic pole. The trading and services activity is escalating inherent with the existence of IAIN and UNDIP campuses. The new campus increasing the need for a dormitory or housing and facilities area. Its result of land conversion in vegetation and agriculture. This spatial and development planning above contain in the Pekalongan Regency spatial document years 2020 – 2040. According to that document, the built-up area is predicted to be 50 % growth by the end of the planning period. The study regarding the influence of the land-use changes on the water carrying capacity in Kajen is conducted with the deductive–quantitative method. The deductive is begin to form theoretical synthesis about the themes and then search the empirical fact to compare. The quantitative approach means the data of the study is can be count rationally. The analysis tools of the study are spatial analysis and correlation. The study aims to examine the influence of the land-use change on the water carrying capacity and the most significant land use which influences it. The result of the study it the most influencing land use in water carrying capacity is a settlement with an 8.7-point level of correlation. The settlement appears from the agricultural land conversion, especially dry land and paddy field.

The Impact of Shariah Governance and Corporate Governance on the Risk Management Practices: Evidence from Local and Foreign Islamic Banks in Malaysia

2018 ◽  
Vol 15 (2) ◽  
pp. 1-20
Author(s):  
Sabri Embi ◽  
Zurina Shafii
Keyword(s):  
Risk Management ◽  
Corporate Governance ◽  
Management Practices ◽  
Principal Component ◽  
T Test ◽  
The Body ◽  
Primary Data ◽  
Islamic Banks ◽  
Shariah Governance ◽  
The Impact

The purpose of this study is to examine the impact of Shariah governance and corporate governance (CG) on the risk management practices (RMPs) of local Islamic banks and foreign Islamic banks operating in Malaysia. The Shariah governance comprises the Shariah review (SR) and Shariah audit (SA) variables. The study also evaluates the level of RMPs, CG, SR, and SA between these two type of banks. With the aid of SPSS version 20, the items for RMPs, CG, SR, and SA were subjected to principal component analysis (PCA). From the PCA, one component or factor was extracted each for the CG, SR, and RMPs while another two factors were extracted for the SA. Primary data was collected using a self-administered survey questionnaire. The questionnaire covers four aspects ; CG, SR, SA, and RMPs. The data received from the 300 usable questionnaires were subjected to correlation and regression analyses as well as an independent t-test. The result of correlation analysis shows that all the four variables have large positive correlations with each other indicating a strong and significant relationship between them. From the regression analysis undertaken, CG, SR, and SA together explained 52.3 percent of the RMPs and CG emerged as the most influential variable that impacts the RMPs. The independent t-test carried out shows that there were significant differences in the CG and SA between the local and foreign Islamic banks. However, there were no significant differences between the two types of the bank in relation to SR and RMPs. The study has contributed to the body of knowledge and is beneficial to academicians, industry players, regulators, and other stakeholders.

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