搜索结果: 1-15 共查到“population density”相关记录15条 . 查询时间(0.125 秒)
GLOBAL URBAN MAPPING USING POPULATION DENSITY,MODIS AND DMSP DATA WITH THE REFERENCE OF LANDSAT IMAGES
Multi-spectral remote sensing Validation Image processing Data Integration Environmental monitoring
2016/1/3
In recent decades, rapid rates of population growth and urban expansion affect local and regional ecosystems, climate, biogeochemistry, as well as food production. Ninety percent of urbanization will ...
An assessment of the applicability of dung count to estimate the wild boar population density in a forest environment
accumulation defecation distribution faeces
2015/5/5
Wild boar is a native species in the fauna of the Czech Republic. It is becoming a problematic game
species both in the Czech Republic and in other European countries due to its harmful impacts. So ...
Diminished UV radiation reduces the spread and population density of Macrosiphum euphorbiae (Thomas) [Hemiptera: Aphididae] in lettuce crops
potato aphid UV-absorbing net IPM SADIE life table parameters
2015/3/17
UV-absorbing covers reduce the incidence of injurious insect pests and viruses in protected crops. In the present study, the effect of a UV-absorbing net (Bionet) on the spatio-temporal dynamics of th...
POPULATION DENSITY ALGORITHM BASED ON AREAL INTERPOLATION
POPULATION DENSITY AREAL INTERPOLATION
2015/3/17
POPULATION DENSITY ALGORITHM BASED ON AREAL INTERPOLATION.
MODELING MIDDLE URBAN POPULATION DENSITY WITH REMOTE SENSING IMAGERY
URBAN POPULATION DENSITY REMOTE SENSING IMAGERY
2015/3/16
MODELING MIDDLE URBAN POPULATION DENSITY WITH REMOTE SENSING IMAGERY.
OCCURRENCE AND POPULATION DENSITY OF APHIDS IN APPLE ORCHARDS OF SOUTH BULGARIA
apple aphids infestation Dyspahis plantaginea Dysaphis devecta Rhopalosiphum insertum Macrosiphum euphorbiae Aphis spiraecola Aphis pomi Eriosoma lanigerum
2014/2/21
In a 2006-2008 study, seven aphid species (Hemiptera: Aphididae) were detected on apple trees in South Bulgaria: Rhopalosiphum insertum Walk. (apple-grass aphid), Dysaphis plantaginea Pass (rosy apple...
Percolation threshold determines the optimal population density for public cooperation
Percolation threshold optimal population density public cooperation
2012/5/28
While worldwide census data provide statistical evidence that firmly link the population density with several indicators of social welfare, the precise mechanisms underlying these observations are lar...
Growth and yield of cassava as influenced by grain cowpea population density in Southeastern Nigeria
Cowpea LAI cassava plant density yield
2011/1/12
The use of some leguminous crops for soil fertility improvement is being promoted for root and tuber crops production in Nigeria. Cowpea has a lot of advantages and is more compatible with cassava tha...
POPULATION DENSITY OF PHYTONOMUS VARIABILIS HRBST. AND PHYTODECTA FORNICATA BRUGG. ON MULTIFOLIOLATE AND TRIFOLIOLATE ALFALFA IN RELATION TO ANATOMICAL CHARACTERISTICS ON THEIR LEAVES
feeding behavior alfalfa weevil Phytodecta fornicata Brugg
2010/12/8
Two alfalfa cultivars - the multifoliolate “Mnogolistna 1” and the trifoliolate “Europe” were investigated for their resistance towards two main alfalfa defoliators Phytonomus variabilis Hrbst., 1795 ...
Influence of population density and season on seed yield and its components in Nigerian sesame genotypes
Heritability genetic advance seed production efficiency
2009/2/20
A field experiment was conducted to assess the impact of three population densities and two seasons on seed yield of 14 genetically diverse Nigerian sesame genotypes. Cultivars 530-6-1, Type A and...
Effects of Plant Population Density on Net Revenues from Ultra-Narrow-Row Cotton
Plant Population Density Net Revenues Ultra-Narrow-Row Cotton
2008/12/10
A common characteristic of ultra-narrow-row cotton (Gossypium hirsutum L.) production is the use of high plant population densities (PPD) compared to wide-row cotton. Farmers are concerned about the h...
Limnochemical Factors Influencing the Seasonal Population Density, Secondary Production, and Calcium-to-Tissue Ratio in the Freshwater Limpet Septaria lineata (Archaeogastropoda: Neritidae)
Septaria freshwater limpet secondary production population density Ganga
2010/3/25
The distribution, secondary production, and calcium:tissue (Ca:tissue) ratio in relation to limno-chemical factors were studied in a freshwater limpet (Septaria lineata) population from the west bank ...
Effect of Population Density and Planting Configuration on Canopy Development and Reproductive Effort in Mungbean (Vigna radiata (L.) Wilczek)
Density configuration leaf area specific leaf mass reproductive effort mungbean
2010/11/8
A field experiment was conducted to determine the influence of population density and planting
arrangement on vegetative and reproductive growth of mungbean. The experiment was conducted with six lev...
Over-wintering of the Colorado potato beetle (Leptinotarsa decemlineata Say) in field conditions and factors affecting its population density in Estonia
Colorado potato beetles overwintering soil type mortality
2010/1/14
The adaptation of Colorado potato beetles (CPB) (Leptinotarsa decemlineata Say) to low temperatures has been the basis for the formation of a local permanent population in Estonia. The number of this ...
Responses of Meteorus Versicolor Wesm. (Hymenoptera, Braconidae) to the Population Density of Tephrina Arenacearia Den. et Schiff. (Lepidoptera. Geomatridae)
parasitoid functional numerical responses
2010/4/1
The purpose of this research was the determination of the effectiveness of Meteorus versicolor Wesm. in the control of Tephrina arenacearia Den. et Schiff. We studied the behavioral responses of this ...