Elephant invasion and escalated depletion of environmental resources in a semi arid tropical ecosystem

2009 ◽  
Vol 4 (3) ◽  
Author(s):  
M Awi
Keyword(s):  
Environmental Resources ◽  
Tropical Ecosystem ◽  
Semi Arid

Study on Constructing of Green Infrastructure and Riparian Wetland of Cities in Northwest Semi-Arid Area

2013 ◽  
Vol 357-360 ◽  
pp. 2085-2091
Author(s):  
Ding Huang Xu ◽  
Xiao Hui Ding ◽  
Hui Liu ◽  
Zhi Ying Zheng
Keyword(s):  
Green Infrastructure ◽  
Western China ◽  
Environmental Resources ◽  
Rapid Urbanization ◽  
Riparian Wetland ◽  
Natural Landscape ◽  
Counter Measures ◽  
Ecological Protection ◽  
Riparian Landscape ◽  
Semi Arid

Northwestern China is situated at the semi-arid climatic zone with a fragile eco-environmental condition. Natural landscape in this region has been largely impacted by development cities, and also has great contribution to culture implications of cities. At present, the way of urbanization, which emphases more on economic development rather than ecological protection, has jeopardized the natural landscape and environmental resources relied for survival by cities, and cities in Western China are facing even serious challenges of environmental degradation during rapid urbanization process. Green infrastructures of cities are guarantee of its citizens to get access to ecological services, and construction of green infrastructure is the major ecological counter measures for dealing with negative environmental impacts led by rapid urbanization, based on protecting environmental resources, ameliorating ecological process, and rebuilding natural landscape. Taken Xian as an example, it reviewed the construction of riparian wetland, which is one of the major components of green infrastructure in Xian. This research provided the methodology for riparian landscape constructing based on ecological and cultural characteristics of riparian landscape.

scholarly journals Agronomic Preliminary Performance of Two Radish Cultivars Intercropped With Coriander

2019 ◽  
Vol 11 (18) ◽  
pp. 173
Author(s):  
Janiquelle da Silva Rabelo ◽  
Marcelo de Almeida Guimarães ◽  
Antonio Vanklane Rodrigues de Almeida ◽  
Hozano de Souza Lemos Neto ◽  
Valsergio Barros da Silva ◽  
...  
Keyword(s):  
Experimental Design ◽  
Cropping System ◽  
Shoot Length ◽  
Environmental Resources ◽  
Main Crop ◽  
Number Of Leaves ◽  
Number Of Stems ◽  
Shoot Weight ◽  
Rural Producers ◽  
Semi Arid

Characterised as a traditional technique for the production of food and biomass, intercropping is a practice mainly used by small rural producers. In general, the practice has sought to maximise the use of environmental resources in an area, as well as to promote the ecological balance of different ecosystems. The aim of this study was to evaluate the performance of radish intercropped with coriander in a region of semi-arid climate. The experimental design was of randomised complete blocks, with five replications per treatment: 1) ‘Cometo’ radish intercropped with coriander, 2) monocropped ‘Cometo’ radish, 3) ‘Saxa’ radish intercropped with coriander, 4) monocropped ‘Saxa’ radish, and 5) monocropped coriander. The coriander and/or radish plants from each treatment were harvested 30 days after sowing. The following parameters were evaluated in the radish: number of leaves per plant, fresh shoot weight, shoot length, taproot length, taproot diameter, taproot weight and productivity; while in the coriander the following were evaluated: number of stems per plant, fresh shoot weight, shoot length and productivity. The Area Equivalence Efficiency (AEE) was also evaluated for the main crop. The ‘Saxa’ radish showed the highest productivity, both as a single crop and when intercropped (15.40 and 14.32 t ha-1 of root, respectively). AEE values were greater than 1 in both intercrops, 2.13 and 1.70 for the intercropped ‘Cometo’ and ‘Saxa’ radish respectively, showing this cropping system to be an important way of optimising coriander cultivation in the area of study.

Ferrihydrite dissolution at the root zone of crops under semi-arid condition controls the plant uptake of uranium and arsenic

2020 ◽  
Author(s):  
Arindam Malakar ◽  
Michael Kaiser ◽  
Daniel D. Snow ◽  
Harkamal Walia ◽  
Chittaranjan Ray
Keyword(s):  
Plant Uptake ◽  
Root Zone ◽  
Arid Condition ◽  
Semi Arid

THE CLASSIFICATION OF LAND ACCORDING TO THE DEGREE OF RABBIT INFESTATION IN CENTRAL OTAGO

1987 ◽  
pp. 65-70
Author(s):  
I.G.C. Kerr ◽  
J.M. Williams ◽  
W.D. Ross ◽  
J.M. Pollard
Keyword(s):  
Carrying Capacity ◽  
Mediterranean Climate ◽  
Natural Habitat ◽  
Public Funding ◽  
Soil Survey ◽  
European Rabbit ◽  
Cultural Modification ◽  
Classification Information ◽  
Semi Arid

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.

CASE STUDY: Evaluation of Different Cooling Systems in Lactating Heat-Stressed Dairy Cows in a Semi-Arid Environment

2007 ◽  
Vol 23 (5) ◽  
pp. 546-555 ◽  
Author(s):  
R. Burgos ◽  
L.J. Odens ◽  
R.J. Collier ◽  
L.H. Baumgard ◽  
M.J. VanBaale
Keyword(s):  
Dairy Cows ◽  
Arid Environment ◽  
Cooling Systems ◽  
Study Evaluation ◽  
Semi Arid
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