The impacts of global change in the humid tropics: selected rainfall-runoff issues linked with tropical forest-land management

2010 ◽  
Vol 24 (3-4) ◽  
pp. 279-325 ◽  
Author(s):  
Mike Bonell
Keyword(s):  
Global Change ◽  
Tropical Forest ◽  
Land Management ◽  
Humid Tropics ◽  
Rainfall Runoff ◽  
Forest Land

scholarly journals Tropical forest hydrology and the role of the UNESCO International Hydrological Programme

1999 ◽  
Vol 3 (4) ◽  
pp. 451-461 ◽  
Author(s):  
M. Bonell
Keyword(s):  
Land Use ◽  
Climate Variability ◽  
Tropical Forest ◽  
Focal Point ◽  
Humid Tropics ◽  
Cultural Dimensions ◽  
Forest Hydrology ◽  
Forest Land ◽  
North East

Abstract. The paper outlines a perspective on tropical forest hydrology within the context of an international hydrological programme. Experience in tropical forest hydrology research in North East Australia is a focal point for comparison with international activities elsewhere. The impacts of climate variability and change are considered briefly, as well as those of reforestation of degraded land on the land use hydrology, which requires a longer term vision and support of long term experimental catchments. Sadly, too few long term experimental catchments have been maintained in the humid tropics and there have been some significant closures even of these sites in recent years. Yet the case for long-term experiments is strengthened by the problematic issue of separating anthropogenic influences (such as land use change) on the hydrology of landscapes from the effects of climate variability at a time of escalation in population and related socio-economic pressures in the humid tropics. Particular emphasis is made of the need for greater consideration for the social and cultural dimensions of forest management within forest hydrology. Furthermore, scientists must be committed to incorporating ‘societal needs' in their planning of research projects, as well as in publicizing the applications of their results, within the framework of forest-land-water policy. Alarm is expressed at the extensive disregard for the application of existing forest hydrology ‘know how' in forest-land management manipulations associated with the humid tropics.

scholarly journals Impact of Differences in Land Management on Natural Vegetation in Semi-Dry Areas: The Case Study of the Adi Zaboy Watershed in the Kilite Awlaelo District, Eastern Tigray Region, Ethiopia

Environments ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 2 ◽  
Author(s):  
Ryunosuke Ogawa ◽  
Masahiro Hirata ◽  
Birhane Gebremedhin ◽  
Satoshi Uchida ◽  
Toru Sakai ◽  
...  
Keyword(s):  
Land Management ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Satellite Image ◽  
Field Investigation ◽  
Sustainable Land Management ◽  
Forest Land ◽  
Grazing Land ◽  
Feed Resources ◽  
Use Of Resources

The search for a sustainable land management has become a universal issue. It is especially necessary to discuss sustainable land management and to secure a site with enough feed supply to improve the lives of the farmers in the Ethiopian Highlands. This research studied the Adi Zaboy watershed in Tigray in order to reveal the changes in land management, assess how the different forms of land management affected the vegetation through unsupervised classification and normalized difference vegetation index (NDVI) analysis with geographic information system (GIS) 10.5 using a WorldView-2 satellite image taken in September 2016 and field investigation, and consider how to allow both environmental preservation and sustainable use of feed resources. The land management types at the research site were classified as “seasonally-closed grazing land”, “prohibited grazing and protected forest land”, and “free grazing land”. On comparing the NDVI of each type of land management, it was found that the seasonally-closed grazing land makes it highly possible to secure and supply feed resources by limiting the grazing period. The expansion of the prohibited grazing and protected forest land is likely to tighten the restriction on the use of resources. Therefore, sustainable land management to secure feed resources may be possible by securing and actively using seasonally-closed grazing land, securing feed by a cut-and-carry, and using satellite images and GIS.

Review of Vegetation Classification and Mapping Systems Undertaken by Major Forested Land Management Agencies in Australia

1997 ◽  
Vol 45 (6) ◽  
pp. 929 ◽  
Author(s):  
D. Sun ◽  
R. J. Hnatiuk ◽  
V. J. Neldner
Keyword(s):  
Land Management ◽  
Vegetation Classification ◽  
Classification Systems ◽  
Vegetation Coverage ◽  
Forest Land ◽  
Wood Production ◽  
Raw Data ◽  
Quantitative Measurements ◽  
Crown Density ◽  
Mapping Systems

This paper provides a detailed review of the major vegetation classification and mapping systems used by the management agencies with primary responsibilities for forested land in Australia. It focuses on the clarification of vegetation units and methodologies used. The paper also provides a comparison of the different nomenclatures against a simplified standard to show how the different systems relate to each other. In Australia, different systems for classifying and describing forest vegetation have been developed by various forest land management agencies to suit their own situations. Most vegetation classification systems reviewed are similar in using floristics and structure as the two primary elements in classifying vegetation types, and all use growth form (physiognomy) to distinguish vegetation units. The classification and mapping systems for wood production purposes differ from those for conservation and environment purposes in several aspects—wood production classifications emphasise commercial tree species and/or attributes such as height, whereas conservation classifications emphasise ecology, vegetation coverage, and the importance of understorey species. There are three broad strategic approaches in the vegetation classification programs being undertaken by the major forest land management agencies in Australia: (1) conducting a single classification across the whole of the agencies’ land in a State; (2) conducting a vegetation classification at the regional level, but using the same methods in each region; and (3) using different methods depending on the specific objectives of individual studies. This paper highlights the value of accurate quantitative measurements in the field. For example, for the two key structural attributes of height and crown density, the measured raw data can be accommodated by a number of different classification schemes whereas if the raw data consists of only records by predetermined classes, then such accommodation is difficult and loses precision.

Upwards from the Plateau

1968 ◽  
Vol 44 (2) ◽  
pp. 11-13
Author(s):  
G. H. Bayly
Keyword(s):  
Land Use ◽  
Forest Management ◽  
Land Management ◽  
Wildlife Management ◽  
Land Use Planning ◽  
Regional Planning ◽  
Leadership Role ◽  
Forest Land ◽  
The Future

The development of the forester's leadership role in forest land management is compared to rising profile of land between a sea or lake shoreline and a range of mountains, the progression is upward but the rate of climb changes. No plateau is identified. Reference is made to forestry leadership in several fields of forest land management; administration, land use, planning, research, forest management, recreational land use and fish and wildlife management. It is noted that forest land management includes activities for which foresters were not academically trained and reference is made to the fact that non-foresters, e.g. biologists and geographers are giving leadership in forest land management and thus providing beneficial competition and stimulation. The most important leadership role in the future may relate to regional planning. The forestry profession is cautioned not to abdicate this field to those in other disciplines.

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