Home

Resultados 1 - 10 de 43,197 para vegetation. La búsqueda tomó 3.142 segundos.  
Ordenar por fecha/Ordenar por relevancia
EARLY WARNING SYSTEMS :PILOT STUDIES ON EARLY WARNING SYSTEMS : NOTE / BY THE SECRETARIAT
(2) Desertification indicators for long-term monitoring: Standardization of observation methods Climate indicators (mainly rainfall quantities) and vegetation indicators (mainly the Normalized Difference Vegetation Index (NDVI)) have hitherto dominated the field of large- scale monitoring for desertification assessment. (...) With the help of remote sensing, model simulation and GIS, sub-theme 2 will involve the standardization of methods for large-scale and long-term surveys using the biophysical indicators such as vegetation and soil. The vegetation indicators will take into account vegetation type, vegetation cover, biomass and Net Primary Productivity (NPP), and the soil indicators will reflect soil moisture amounts, snowfall, organic carbon amounts in the surface soil, and the degree of wind/water erosion (table 1). (...) The amount of digestible nutrients which can be consumed (grazing capacity) depends upon vegetation types, species composition, the current amount of nutrients and productivity.
Idioma:Español
Puntuación: 1415357.5 - https://daccess-ods.un.org/acc...en&DS=ICCD/COP(7)/CST/7&Lang=S
Fuente de datos: ods
BENCHMARKS AND INDICATORS : NOTE / BY THE SECRETARIAT
Then the following four qualities are evaluated (a) soil quality, (b) climate quality, (c ) vegetation quality, and (d) management quality. After the computation of four indices for each quality, the ESAs to desertification were defined by combining them (Fig. 4). (...) Areas with deep to very deep, nearly flat, well drained, coarse-textured or finer soils, under semi-arid or wetter climatic conditions, independently of vegetation were considered as non- threatened by desertification. (...) In the first stage, the four indices for soil quality, climate quality, vegetation quality, and management quality were calculated providing a measure of the inherent quality of the physical environment and the man induced stress of desertification.
Idioma:Español
Puntuación: 1335060.9 - daccess-ods.un.org/acce...en&DS=ICCD/COP(6)/CST/5&Lang=S
Fuente de datos: ods
LETTER DATED 31 MAY 2013 FROM THE LEGAL COUNSEL AND HEAD OF THE LEGAL DEPARTMENT OF THE EUROPEAN SPACE AGENCY TO THE SECRETARY-GENERAL
Proba-V transporta un generador de imágenes “Vegetation” para cartografiar la cubierta vegetal de todo el planeta cada dos días; este tomará el relevo de los dispositivos “Vegetation” de primera generación transportados a bordo de los satélites Spot-4 y Spot-5 de Francia. “Vegetation” es un generador de imágenes ópticas de alta tecnología diseñado para proporcionar imágenes con una resolución de 350 metros en cuatro bandas visibles e infrarrojas con una anchura de franja de 2.250 kilómetros que permite abarcar diariamente todas las zonas comprendidas en una extensión de 35-75 grados norte y 35-56 grados sur.
Idioma:Español
Puntuación: 1331866.4 - daccess-ods.un.org/acce...open&DS=ST/SG/SER.E/679&Lang=S
Fuente de datos: ods
SCIENTIFIC AND TECHNICAL PRESENTATIONS TO THE SCIENTIFIC AND TECHNICAL SUBCOMMITTEE AT ITS 35TH SESSION : REPORT / BY THE SECRETARIAT
V.98-52817 ANACIONESUNIDAS Asamblea General Distr. GENERAL A/AC.105/699 20 de abril de 1998 ESPAÑOL Original: INGLÉS COMISIÓN SOBRE LA UTILIZACIÓN DEL ESPACIO ULTRATERRESTRE CON FINES
Idioma:Español
Puntuación: 1297232.5 - daccess-ods.un.org/acce...et?open&DS=A/AC.105/699&Lang=S
Fuente de datos: ods
REPORT OF THE CONFERENCE OF THE PARTIES SERVING AS THE MEETING OF THE PARTIES TO THE KYOTO PROTOCOL ON ITS 3RD SESSION, HELD IN BALI FROM 3 TO 15 DECEMBER 2007 : ADDENDUM
(4) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria. (...) (4) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria. (...) (3) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria.
Idioma:Español
Puntuación: 1244705.7 - daccess-ods.un.org/acce...CCC/KP/CMP/2007/9/ADD.2&Lang=S
Fuente de datos: ods
GOOD PRACTICE GUIDANCE FOR LAND USE, LAND-USE CHANGE AND FORESTRY ACTIVITIES UNDER ARTICLE 3, PARAS 3 AND 4, OF THE KYOTO PROTOCOL :DRAFT CONCLUSIONS : ADDENDUM / PROPOSED BY THE CHAIR
(4) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria. (...) (4) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria. (...) (3) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria.
Idioma:Español
Puntuación: 1244705.7 - https://daccess-ods.un.org/acc...C/SBSTA/2007/L.21/ADD.1&Lang=S
Fuente de datos: ods
PRELIMINARY ANALYSIS - STRATEGIC OBJECTIVE 3: TO MITIGATE, ADAPT TO, AND MANAGE THE EFFECTS OF DROUGHT IN ORDER TO ENHANCE RESILIENCE OF VULNERABLE POPULATIONS AND ECOSYSTEMS. NOTE BY THE SECRETARIAT
Drought indicators in use at the national level Table 1 Thematic categorization of national-level drought indicators reported as currently in use Theme Frequency Per cent Meteorological/rainfall 128 31.4 Agricultural/vegetation 94 23.0 Socioeconomic/living conditions 63 15.4 Hydrological/water scarcity 51 12.5 Ecological/biodiversity 32 7.8 Climate hazard 23 5.6 Risk management 10 2.5 Research 7 1.7 Total 408 100.0 ICCD/CRIC(17)/5 9 Table 2 Regional breakdown of drought indicators currently in use at the national level Theme Africa Asia LAC NMED CEE Global Meteorological/rainfall 40 21 27 7 33 128 Agricultural/vegetation 56 16 10 3 9 94 Socioeconomic/living conditions 25 20 17 1 63 Hydrological/water scarcity 14 19 12 5 1 51 Ecological/biodiversity 19 8 4 1 32 Climate hazard 5 11 3 3 1 23 Risk management 7 - 3 - - 10 Research 2 1 4 - 7 Total 168 96 80 19 45 408 Notes: CEE = Central and Eastern Europe; LAC = Latin America and Caribbean; NMED = Northern Mediterranean. IC C D /C R IC (1 7 )/5 1 0 Figure 1 Countries using at least one meteorological/rainfall drought indicator at the national level IC C D /C R IC (1 7 )/5 1 1 Figure 2 Countries using at least one agricultural/vegetation drought indicator at the national level IC C D /C R IC (1 7 )/5 1 2 Figure 3 Countries using at least one socioeconomic/living conditions drought indicator at the national level IC C D /C R IC (1 7 )/5 1 3 Figure 4 Countries using at least one hydrological/water scarcity drought indicator at the national level IC C D /C R IC (1 7 )/5 1 4 Figure 5 Countries using at least one ecological/biodiversity drought indicator at the national level IC C D /C R IC (1 7 )/5 1 5 Figure 6 Countries using at least one climate hazard drought indicator at the national level ICCD/CRIC(17)/5 16 B.
Idioma:Español
Puntuación: 1212493 - https://daccess-ods.un.org/acc...open&DS=ICCD/CRIC(17)/5&Lang=S
Fuente de datos: ods
DRAFT CONCLUSIONS ON AGENDA ITEM 3 (A) : ADDENDUM / PROPOSED BY THE CO-CHAIRS OF THE CONTACT GROUP
(4) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria. (...) (4) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria. (...) (3) Activity data may be further subdivided according to climate zone, management system, soil type, vegetation type, tree species, ecological zone, national land classification or other criteria.
Idioma:Español
Puntuación: 1202554.5 - daccess-ods.un.org/acce...C/SBSTA/2004/L.15/ADD.1&Lang=S
Fuente de datos: ods
LAND USE, LAND-USE CHANGE AND FORESTRY : DRAFT CONCLUSIONS / PROPOSED BY THE CHAIR
For the first commitment period, reforestation activities will be limited to reforestation occurring on those lands that did not contain forest on 31 December 1989; (d) “Deforestation” is the direct human-induced conversion of forested land to non-forested land; (e) “Revegetation” is a direct human-induced activity to increase carbon stocks on sites through the establishment of vegetation that covers a minimum area of 0.05 hectares and does not meet the definitions of afforestation and reforestation contained here; [(e bis) Option 1 (insert): “Devegetation” is a human-induced loss of carbon stocks of vegetation that does not meet the definition of forests. It includes the loss of vegetation on land, whether covered by water or not, and shall includes areas of land or land covered by vegetation that is a minimum area of 0.05 hectares. (...) Option 2: (replace (e) above by) “Revegetation” is a direct human-induced activity to increase carbon stocks on sites through the establishment of vegetation that covers a minimum area of 0.05 hectares and does not meet the definitions of afforestation and reforestation above.
Idioma:Español
Puntuación: 1199934 - daccess-ods.un.org/acce...DS=FCCC/KP/AWG/2009/L.3&Lang=S
Fuente de datos: ods
REVISED GLOSSARY FOR THE PERFORMANCE REVIEW AND ASSESSMENT OF IMPLEMENTATION OF THE CONVENTION
Eficiencia Enhanced Vegetation Index (EVI) The enhanced vegetation index (EVI) is an 'optimized' vegetation index for use with remote sensing data, similar to NDVI. It is designed to enhance the vegetation signal with improved sensitivity in high biomass regions.
Idioma:Español
Puntuación: 1191705 - daccess-ods.un.org/acce...n&DS=ICCD/COP(10)/INF.9&Lang=S
Fuente de datos: ods