Assessing multi-year-drought vulnerability in dense Mediterranean-climate forests using water-balance-based indicators

The European rabbit (Oryctolagus cuniculus) introduced into New Zealand in the 183Os, has consistently flourished in Central Otago, the upper Waitaki, and inland Marlborough, all areas of mediterranean climate. It has proved difficult to manage in these habitats. The 'rabbit problem' is largely confined to 105,000 ha of low producing land mostly in semi arid areas of Central Otago. No field scale modifications of the natural habitat have been successful in limiting rabbit numbers. The costs of control exceed the revenue from the land and continued public funding for control operations appears necessary. A system for classifying land according to the degree of rabbit proneness is described. Soil survey and land classification information for Central Otago is related to the distribution and density of rabbits. This intormation can be used as a basis for defining rabbit carrying capacity and consequent land use constraints and management needs. It is concluded that the natural rabbit carrying capacity of land can be defined by reference to soil survey information and cultural modification to the natural vegetation. Classification of land according to rabbit proneness is proposed as a means of identifying the need for, and allocation of, public funding tor rabbit management. Keywords: Rabbit habitat, rabbit proneness, use of rabbit prone land.

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Dust to weevils, weevils to dust: Diatomaceous earth, weevil water balance, and personality

10.1603/ice.2016.107566 ◽

2016 ◽

Author(s):

Raul N.C. Geddes

Keyword(s):

Water Balance ◽

Diatomaceous Earth

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Water Balance for the City of Al-Najaf Al-Ashraf/Southern Iraq

Diyala Journal for Pure Science ◽

10.24237/djps.1304.352c ◽

2017 ◽

Vol 13 (4) ◽

pp. 186-197

Author(s):

Tariq Abed Hussain ◽

◽

Ghayda Yaseen AlKindi ◽

Rana Jawad Kadhim

Keyword(s):

Water Balance ◽

The City ◽

Southern Iraq

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Climatic Water Balance and Hydrogeological characteristics of Lailan Basin, Southeast Kirkuk - North of Iraq

Iraqi Journal of Science ◽

10.24996/ijs.2018.59.1a.13 ◽

2018 ◽

Vol 59 (1A) ◽

Keyword(s):

Water Balance ◽

Hydrogeological Characteristics

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HOUSEHOLD WATER BALANCE AND ASSESSMENT OF WATER VOLUME FOR IRRIGATION IN AGRO LANDSCAPES OF THE KYZYLSU-YUZHNAYA BASIN

Prirodoobustrojstvo ◽

10.26897/1997-6011-2020-5-102-109 ◽

2020 ◽

pp. 102-109

Author(s):

D.KH. DOMULLODZHANOV ◽

◽

R. RAHMATILLOEV

Keyword(s):

Water Balance ◽

River Basin ◽

Water Use ◽

Storage Systems ◽

Low Cost ◽

Field Studies ◽

Water Volume ◽

Land Productivity ◽

Household Water ◽

And Storage

The article presents the results of the field studies and observations that carried out on the territory of the hilly, low-mountain and foothill agro landscapes of the Kyzylsu-yuzhnaya (Kyzylsu-Southern) River Basin of Tajikistan. Taking into account the high-altitude location of households and the amount of precipitation in the river basin, the annual volumes of water accumulated with the use of low-cost systems of collection and storage of precipitation have been clarified. The amount of water accumulated in the precipitation collection and storage systems has been established, the volume of water used for communal and domestic needs,the watering of livestock and the amount of water that can be used to irrigate crops in the have been determined. Possible areas of irrigation of household plots depending on the different availability of precipitation have been determined. It has been established that in wet years (with precipitation of about 10%) the amount of water collected using drip irrigation will be sufficient for irrigation of 0.13 hectares, and in dry years (with 90% of precipitation) it will be possible to irrigate only 0.03 ha of the household plot. On the basis of the basin, the total area of irrigation in wet years can be 4497 ha, and in dry years only 1087 ha. Taking into account the forecasts of population growth by 2030 and an increase in the number of households, the total area of irrigation of farmlands in wet years may reach 5703 hectares,and in dry years – 1379 hectares. Growing crops on household plots under irrigation contributes to a significant increase in land productivity and increases the efficiency of water use of the Kyzylsu-yuzhnaya basin.

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PENDUGAAN EROSI DAN NERACA AIR EMBUNG DI WILAYAH PERBATASAN KABUPATEN BELU NUSA TENGGARA TIMUR

Jurnal Rekayasa Lingkungan ◽

10.29122/jrl.v4i1.1854 ◽

2018 ◽

Vol 4 (1) ◽

Author(s):

Wahyu Widiyono

Keyword(s):

Water Balance ◽

Water Resource ◽

Water Depth ◽

Rainy Season ◽

Water Reservoir ◽

Water Shortage ◽

Regional Government ◽

Environment Management ◽

Individual Number ◽

Rainfall Volume

Embung as a man made water reservoir is one of methods to overcome the water shortage in the border area, Belu District, East Nusa Tenggara Province. A number of 27 embungs were built by Regional Government in this area. Embung water and environment management is the main problem to sustain water resource. The research to inventory and identify of vegetation, to predict erosion, to monitor water balance, and to optimize water utilization were conducted, in 2005-2008. The research was undertaken in Embung Leosama. Methods were survey, observation, monitoring and analysis. Results were: (1). There were 7 species and 90 individual number of tree; (2). Prediction of erosion was 97.383 ton/ha/year; (3). Water depth as indicator of embung water balance was decrease due to a little rainfall volume in rainy season 2006/2007; but it was increase in 2007/2008; (4). Embung water can be optimized for drinking cattle, horticulture, nursery and regreening irrigation.Key Words: embung, erosion, water balance.

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