Tile Drainage on Agricultural Lands from North- East Romania - Experimental Variants and Technical Efficiency

Syntaxonomy of secondary communities formed instead of earlier agricultural lands in the middle and south taiga subzones of the European North-East of Russia

Turczaninowia ◽

10.14258/turczaninowia.24.4.14 ◽

2021 ◽

Vol 24 (4) ◽

pp. 140-156

Author(s):

Irina A. Likhanova ◽

Galina V. Zheleznova

Keyword(s):

Woody Plants ◽

Forest Edge ◽

Agricultural Lands ◽

Salix Caprea ◽

North East ◽

Anthriscus Sylvestris ◽

European North ◽

Elytrigia Repens ◽

Meadow Communities ◽

Grass Stand

We have identified the diversity of secondary communities formed instead of earlier agricultural lands (middle and south taiga subzones of the European North-East of Russia). The work describes 8 associations, 2 subassociations of the classes Papaveretea rhoeadis, Artemisietea vulgaris,Epilobietea angustifolii, Molinio–Arrhenatheretea, Vaccinio–Piceetea. 3 associations (Urtico dioicae–Chamaenerietum angustifolii, Centaureo phrygiae–Dactyletum glomeratae, Deschampsio cespitosae–Salicetum capreae), 1 subassociation (Galeopsietum bifidae galeopsietosum speciosae)were fixed for the first time. We noted a replacement of segetal communities (subass. Galeopsietum bifidae galeopsietosum speciosae) by meadow communities (аss. Centaureo phrygiae–Dactyletum glomeratae) through the domination stage of Cirsium setosum and Elytrigia repens (аss. Cirsio setosi–Elytrigietum repentis). Favorable conditions for development of woody plants (small size of study area, its close position to forest ecosystems, poorly sodded soil) respond for replacement of meadow succession stage by young woody plants towards the second decade of succession. Earlier agricultural lands are an appropriated place for formation of birch forests with a well-developed undergrowth of Salix caprea and herb layer of meadow and forest edge plants (аss. Deschampsio cespitosae–Salicetum capreae). Big-size study areas with a well-formed grass stand are dominated by meadow communities towards the second succession decade even in case of no haying. The highly competitive nitrophytes as Heracleum sosnowskyi, Chamaenerion angustifolium, Anthriscus sylvestris form the following communities as аss. Urtico dioicae–Heracleetum sosnowskyi, аss. Urtico dioicae–Chamaenerietum angustifolii, аss. Symphyto officinalis–Anthriscetum sylvestris. Being highly competitive, these species lead to degradation of first-formed meadow communities.

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THE INFLUENCE OF IMPROVEMENT PROCEDURES AND A TILE DRAINAGE SYSTEM ON SOIL PHYSICAL PROPERTIES IN A NORTH-EAST ROMANIAN EXPERIMENTAL SITE

Irrigation and Drainage ◽

10.1002/ird.653 ◽

2011 ◽

Vol 61 (3) ◽

pp. 386-397 ◽

Cited By ~ 1

Author(s):

Daniel Bucur ◽

Valeriu Moca

Keyword(s):

Physical Properties ◽

Drainage System ◽

Soil Physical Properties ◽

Tile Drainage ◽

Experimental Site ◽

North East ◽

Improvement Procedures

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Economic and technical efficiency of cassava production in Ika North East Local Government Area of Delta State, Nigeria

Journal of Development and Agricultural Economics ◽

10.5897/jdae2013.0541 ◽

2014 ◽

Vol 6 (10) ◽

pp. 429-436 ◽

Cited By ~ 3

Author(s):

A. V. Eze, ◽

S. U. Nwibo,

Keyword(s):

Local Government ◽

Technical Efficiency ◽

Local Government Area ◽

North East ◽

Cassava Production

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Technical Efficiency of the Subsurface Drainage on Agricultural Lands in the Moldova River Meadow

Current Perspective on Irrigation and Drainage ◽

10.5772/67258 ◽

2017 ◽

Author(s):

Oprea Radu ◽

Sorin Mihai Cimpeanu ◽

Razvan Ionut Teodorescu ◽

Daniel Bucur

Keyword(s):

Technical Efficiency ◽

Subsurface Drainage ◽

Agricultural Lands

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An empirical study on technological progress, technical efficiency change and economic growth in North-East of China

2011 International Conference on Business Management and Electronic Information ◽

10.1109/icbmei.2011.5917914 ◽

2011 ◽

Author(s):

Liu Ganzhou

Keyword(s):

Economic Growth ◽

Empirical Study ◽

Technical Efficiency ◽

Technological Progress ◽

Efficiency Change ◽

North East

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Technical efficiency of carp production in Pakistan

Aquaculture Economics & Management ◽

10.1046/j.1365-7313.1999.00040.x ◽

1999 ◽

Vol 3 (2) ◽

pp. 131 ◽

Cited By ~ 1

Author(s):

Khem R. Sharma

Keyword(s):

Technical Efficiency

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Ras al Khaimah: further archaeological discoveries

Antiquity ◽

10.1017/s0003598x00150070 ◽

1976 ◽

Vol 50 (200) ◽

pp. 216-222

Author(s):

Beatrice De Cardi

Keyword(s):

United Arab Emirates ◽

The State ◽

Focused Attention ◽

North East ◽

The North ◽

History Of ◽

The City

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.

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