Recently, drones have found applicability in a variety of study fields, one of these being forestry, where an increasing interest is given to this segment of technology, especially due to the high-resolution data that...Recently, drones have found applicability in a variety of study fields, one of these being forestry, where an increasing interest is given to this segment of technology, especially due to the high-resolution data that can be collected flexibly in a short time and at a relatively low price. Also, drones have an important role in filling the gaps of common data collected using manned aircraft or satellite remote sensing, while having many advantages both in research and in various practical applications particularly in forestry as well as in land use in general. This paper aims to briefly describe the different approaches of applications of UAVs （Unmanned Aircraft Vehicles） in forestry, such as forest mapping, forest management planning, canopy height model creation or mapping forest gaps. These approaches have great potential in the near future applications and their quick implementation in a variety of situations is desirable for the sustainable management of forests.展开更多
Since the turn of the 21st century, the central government in Zimbabwe encouraged community participation in natural resources utilization. The research intends to understand the efficacy of this paradigm shift on sus...Since the turn of the 21st century, the central government in Zimbabwe encouraged community participation in natural resources utilization. The research intends to understand the efficacy of this paradigm shift on sustainable wetland utilization in communal areas, focusing specifically on Chebvute wetland in Zvishavane district of Zimbabwe. Research data was gathered through questionnaires, semi-structured interviews, direct observations and field measurements. These instruments targeted 19 purposively selected plot holders, project chairperson, Environmental Management Agency officer, Agritex officer and the headman. Mapping of the wetland area and its landuse was done using global positioning system receivers and the map was produced using ILWIS, ArcView and Google Earth images. Research findings revealed that the conserved wetland increased its size and biodiversity. Generally, all crops grown had estimated yields higher than the national averages per hectare. The average maize yield was 2.726 tonnes per hectare compared to national average of 0.87. However, conflicts between plot holders, other community members and officials from government institutions such as Environmental Management Agency and Agritex should be ironed out in order to safeguard the wetland＇s future.展开更多
Make up for deficiencies in the economic development of market mechanisms through macro-control method. Although the market plays a fundamental role in resource allocation, in other means of regulation it plays an irr...Make up for deficiencies in the economic development of market mechanisms through macro-control method. Although the market plays a fundamental role in resource allocation, in other means of regulation it plays an irreplaceable role in regulating the economy, the management of economic activities. However, by the market ＂invisible hand＂ spontaneous adjustment, there is ＂market failure＂ problem. Market self-regulation mechanisms inevitable cyclical economic fluctuations and economic crisis, the impact of a sustained and stable economic growth will lead to a waste of resources, environmental degradation is caused, but also it produces uneven regional development, causing social polarization between rich and poor, etc. Public goods such as ecological environment should be through legal means, rather than a means to implement the healthy development of the market environment.展开更多
文摘Recently, drones have found applicability in a variety of study fields, one of these being forestry, where an increasing interest is given to this segment of technology, especially due to the high-resolution data that can be collected flexibly in a short time and at a relatively low price. Also, drones have an important role in filling the gaps of common data collected using manned aircraft or satellite remote sensing, while having many advantages both in research and in various practical applications particularly in forestry as well as in land use in general. This paper aims to briefly describe the different approaches of applications of UAVs （Unmanned Aircraft Vehicles） in forestry, such as forest mapping, forest management planning, canopy height model creation or mapping forest gaps. These approaches have great potential in the near future applications and their quick implementation in a variety of situations is desirable for the sustainable management of forests.
文摘Since the turn of the 21st century, the central government in Zimbabwe encouraged community participation in natural resources utilization. The research intends to understand the efficacy of this paradigm shift on sustainable wetland utilization in communal areas, focusing specifically on Chebvute wetland in Zvishavane district of Zimbabwe. Research data was gathered through questionnaires, semi-structured interviews, direct observations and field measurements. These instruments targeted 19 purposively selected plot holders, project chairperson, Environmental Management Agency officer, Agritex officer and the headman. Mapping of the wetland area and its landuse was done using global positioning system receivers and the map was produced using ILWIS, ArcView and Google Earth images. Research findings revealed that the conserved wetland increased its size and biodiversity. Generally, all crops grown had estimated yields higher than the national averages per hectare. The average maize yield was 2.726 tonnes per hectare compared to national average of 0.87. However, conflicts between plot holders, other community members and officials from government institutions such as Environmental Management Agency and Agritex should be ironed out in order to safeguard the wetland＇s future.
文摘Make up for deficiencies in the economic development of market mechanisms through macro-control method. Although the market plays a fundamental role in resource allocation, in other means of regulation it plays an irreplaceable role in regulating the economy, the management of economic activities. However, by the market ＂invisible hand＂ spontaneous adjustment, there is ＂market failure＂ problem. Market self-regulation mechanisms inevitable cyclical economic fluctuations and economic crisis, the impact of a sustained and stable economic growth will lead to a waste of resources, environmental degradation is caused, but also it produces uneven regional development, causing social polarization between rich and poor, etc. Public goods such as ecological environment should be through legal means, rather than a means to implement the healthy development of the market environment.
