Effects of land cover on runoff coefficient

Sriwongsitanon, Nutchanart; Taesombat, Wisuwat

doi:10.1016/j.jhydrol.2011.09.021

Cited by 167 publications

(100 citation statements)

References 33 publications

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“…In mountainous catchments the riparian zone dominates the runoff response and intercepts high amounts of nutrients but also contributes most to runoff during conditions of high soil saturation (von Freyberg et al 2014). Forests can store large amounts of water but during larger rainfall events forest areas in the tropics produce more runoff than non-forested areas because of quick soil saturation and increased base flow (Sriwongsitanon and Taesombat 2011).…”

Section: Review Resultsmentioning

confidence: 99%

Effects of landscape configuration on mapping ecosystem service capacity: a review of evidence and a case study in Scotland

et al. 2016

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Context Humans structure landscapes for the production of food, fibre and fuel, commonly resulting in declines of non-provisioning ecosystem services (ESs). Heterogeneous landscapes are capable of providing multiple ESs, and landscape configuration-spatial arrangement of land cover in the landscape-is expected to affect ES capacity. However, the majority of ES mapping studies have not accounted for landscape configuration. Objectives Our objective is to assess and quantify the relevance of configuration for mapping ES capacity. A review of empirical evidence for configuration effects on the capacity of ten ESs reveals that for four ESs configuration is relevant but typically ignored in ES quantification. For four ESs we quantify the relevance of configuration for mapping ESs using Scotland as a case study. Methods Each ES was quantified through modelling, respectively ignoring or accounting for configuration. The difference in ES capacity between the two ES models was determined at multiple spatial scales. Results Configuration affected the capacity of all four ESs mapped, particularly at the cell and watershed scale. At the scale of Scotland most local effects averaged out. Flood control and sediment retention responded strongest to configuration. ESs were affected by different aspects of configuration, thus requiring specific methods for mapping each ES. Conclusions Accounting for configuration is important for the assessment of certain ESs at the cell and watershed scale. Incorporating configuration in landscape management provides opportunities for spatial optimization of ES capacity, but the diverging response of ESs to configuration suggests that accounting for configuration involves trade-offs between ESs.

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Section: Review Resultsmentioning

confidence: 99%

Effects of landscape configuration on mapping ecosystem service capacity: a review of evidence and a case study in Scotland

et al. 2016

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“…The runoff coefficient associated with the occurrence of flood peaks decreases as agricultural and forest areas are disrupted. Forest areas tend to generate more runoff than non-forest areas [11]. Land use in the catchment area of Lake Toba is required to determine the runoff coefficient.…”

Section: E Water Availabilitymentioning

confidence: 99%

Analysis Water Balance of Lake Toba as Source an Integrated Water Regional Management (IWRM) North Sumatera

Wesli¹

2017

IJET

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-The needs of raw water in Medan city increases every year in line with the population growth, whereas the quality of hygienic water in the river is insufficient. Therefore, it needs another alternative source to meet the standard quality with low cost. One of the potential sources is Lake Toba. To meet the needs North Sumatera Provincial Government intends to use Lake Toba, but it is feared that the decline of normal water level will disrupt the cruise ship, especially when anchored at the port. The Government plans a water supply system in Integrated Water Regional Management (IWRM) to be used collectively to be efficient in construction and operation. This study aims to determine the water balance of Lake Toba if used as a regional water supply and impact on normal water levels. In this paper, the normal water levels were analyzed by inflow and outflow, not based on elevations above sea level. The method of analysis is water balance analysis done in two parts, analysis of water debit requirement (output) and analysis of water supply (input) in a hydrological analysis. Comparison of the water balance is a consideration for conclusions. The results showed that the required debit was 82.37 m3/ sec (output discharge) while the supply of rainfall as reliable discharge was 121.79 m3/sec. In addition, the supply of rivers around Lake Toba contributed 87.3 m3/sec, resulting in total discharge to 209.09 m3/sec, it can be illustrated that the output discharge is less than the input discharge, so it can be concluded that Lake Toba can be used as a source of raw water and does not affect the normal water level. Keyword -Normal Water Level, Water Balance, Integrated Water Regional Management (IWRM) I. INTRODUCTION The need for raw water of North Sumatera increases every year, especially in Medan, while the condition of raw water supply is getting worse due to pollution in the river. The problems faced by Medan today are that the field that keeps the water demand increases along with the increase of population, the result has not been able to meet the water needs of the community both in quantity and quality, the impact of regional development is the provision of the community's raw water needs [1] The Government of North Sumatera intends to apply Integrated Water Regional Management (IWRM) to serve Medan City, Tebing Tinggi City, Pematang Siantar City, Simalungun Regency, Deli Serdang Regency and Serdang Bedagai Regency, but for Simalungun Regency, Deli Serdang and Serdang Bedagai Districts do not serve All areas cover only sub-districts which are only bypassed by pipelines. The government needs another alternative source that meets the quality standard of water and can be produced at low cost. One of the potential sources is Lake Toba which is located very far from the city of Medan about 175 km. To meet the needs until 2032, the North Sumatera Provincial Government intends to use Lake Toba, but it is feared that the decline of normal water level will disrupt the cruise ship, especially when anchored at the port...

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“…Apart from climatic causes, the extreme flood in 2011 also could have resulted from other factors that involve human activities and civil engineering, such as types of land cover, land-use change (Sriwongsitanon and Taesombat 2011;Jothityangkoon et al 2013), interactions between a river channel and its natural and/or constructed flood plain (Trigg et al 2013), and impacts of reservoir operation (Mateo et al 2014). Water Rakwatin et al 2013;Haraguchi and Lall 2014;Mateo et al 2014).…”

Section: Discussionmentioning

confidence: 99%

The 2011 Great Flood in Thailand: Climate Diagnostics and Implications from Climate Change

2015

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Severe flooding occurred in Thailand during the 2011 summer season, which resulted in more than 800 deaths and affected 13.6 million people. The unprecedented nature of this flood in the Chao Phraya River basin (CPRB) was examined and compared with historical flood years. Climate diagnostics were conducted to understand the meteorological conditions and climate forcing that led to the magnitude and duration of this flood. Neither the monsoon rainfall nor the tropical cyclone frequency anomalies alone was sufficient to cause the 2011 flooding event. Instead, a series of abnormal conditions collectively contributed to the intensity of the 2011 flood: anomalously high rainfall in the premonsoon season, especially during March; record-high soil moisture content throughout the year; elevated sea level height in the Gulf of Thailand, which constrained drainage; and other water management factors. In the context of climate change, the substantially increased premonsoon rainfall in CPRB after 1980 and the continual sea level rise in the river outlet have both played a role. The rainfall increase is associated with a strengthening of the premonsoon northeasterly winds that come from East Asia. Attribution analysis using phase 5 of the Coupled Model Intercomparison Project historical experiments pointed to anthropogenic greenhouse gases as the main external climate forcing leading to the rainfall increase. Together, these findings suggest increasing odds for potential flooding of similar intensity to that of the 2011 flood.

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Effects of land cover on runoff coefficient

Cited by 167 publications

References 33 publications

Effects of landscape configuration on mapping ecosystem service capacity: a review of evidence and a case study in Scotland

Effects of landscape configuration on mapping ecosystem service capacity: a review of evidence and a case study in Scotland

Analysis Water Balance of Lake Toba as Source an Integrated Water Regional Management (IWRM) North Sumatera

The 2011 Great Flood in Thailand: Climate Diagnostics and Implications from Climate Change

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