Establishment of Proper Land-use Assessment and Management Strategy for Deji Reservoir Catchment, Taiwan

2009 ◽  
Vol 9 (5-6) ◽  
pp. 323-338 ◽  
Author(s):  
Li-Fang Yu ◽  
Zue-Er Chen ◽  
Tang-Hao Guo
Keyword(s):  
Land Use ◽  
Author(s):  
Shibu Jose ◽  
Harold E. “Gene” Garrett ◽  
Michael A. Gold ◽  
James P. Lassoie ◽  
Louise E. Buck ◽  
...  

2006 ◽  
Vol 59 ◽  
pp. 266-270 ◽  
Author(s):  
M. Bell

Chilean needle grass (Nassella neesiana) is a containment pest in the Regional Pest Management Strategy for Marlborough It is of concern because it has sharptipped seeds that bore into the eyes and pelts of livestock Discovered in Marlborough in the 1930s it now infests 4311 ha In 1987 18 properties were infested increasing to 53 by 2000 and 96 by December 2005 In addition both the range and density of Chilean needle grass has increased significantly since 1987 and to date no infestations have been eradicated Failure to stop this spread is due to the difficulty of both identification and control Effective control and land management methods for this weed are urgently needed The probability of this weed spreading further both within and beyond Marlborough appears to be high This conclusion along with land use changes has implications for the review of the Regional Pest Management Plan


Hydrology ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 53
Author(s):  
Muhammad Atiq Ur Rehman Tariq ◽  
Zohreh Rajabi ◽  
Nitin Muttil

Agricultural damage due to floods in the Indus basin’s fertile land has been the most damaging natural disaster in Pakistan so far. Earthen dikes are protecting the vast areas of the floodplain from regular flooding. However, the floodplain is attractive to farmers due to its fertility and experiences regular crop production within and out of the dike area. This paper evaluates the flood risk in a floodplain of the Chenab river in Pakistan and recommends land-use changes to reduce the flood risk for crops and associated settlements within the study area. The objective of the land-use change is not just to reduce flood losses but also to increase the overall benefits of the floodplain in terms of its Economic Rent (ER). This preliminary study analyses the economic impacts of the risk-based land-use improvements on existing floodplain land uses. Expected Annual Damage (EAD) maps were developed using hydrodynamic models and GIS data. The developed model identified the areas where maize can be economically more productive compared to rice under flood conditions. Promising results were obtained for the settlement relocations. It was also observed that the infra-structure, running parallel to the river, plays a significant role in curtailing the extent of floods. The results show that a combination of structural and non-structural measures proves more effective. The study also recommends the inclusion of social and environmental damages as well as other types of non-structural measures to develop the most effective flood management strategy.


1991 ◽  
Vol 1 (4) ◽  
pp. 361-392 ◽  
Author(s):  
M. Neil McCulloch

SummaryThe St Helena Wirebird, a sand plover, is the last surviving endemic bird on the South Atlantic island of St Helena. Census work carried out during 1988–1989 located a maximum of 495 individuals. This is thought to be close to the true size of the population and i s more than 50% higher than the most recent previous estimate. Population trends remain unknown, however. Breeding success appears to be low. A maximum survival rate from egg to independence of 19% was estimated. Predation and disturbance of Wirebirds is discussed. Wirebirds occur in grassland and semi-desert. Highest densities are found in relatively dry, flat pastures. Wetter upland pastures hold few Wirebirds, possibly because of more difficult feeding conditions encountered in taller, denser vegetation on steep slopes. Wirebirds prey on a wide range of invertebrates but beetles and caterpillars appear to predominate in the diet. Possible future threats, principally changes in land-use, were assessed and a management strategy for the species is outlined.


Author(s):  
Robin Paul Malloy
Keyword(s):  

2003 ◽  
Vol 18 (1) ◽  
pp. 78-89 ◽  
Author(s):  
Lars Östlund ◽  
Tysk Staffan Ericsson ◽  
Olle Zackrisson ◽  
Rikard Andersson

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