اسلاید پاورپوینت: جنگلی (forest) ، سطح (area) و جنگل بری (deforestation)…

 

عناوین اصلی استخراج شده از این فایل پاورپوینت

عناوین اصلی استخراج شده از این فایل پاورپوینت

● FORESTS
● Deforestation in Tai National Park
Côte d`Ivoire
● Steady deforestation of dense forest cover in Kisangani, Congo
● Changes in narrow coastal plain of Itampolo
Madagascar
● Impact of logging in British Columbia
Canada
● Forests along Gaspe Peninsula
Canada
● Angangueo – an important habitat for monarch butterflies, Mexico
● Different land use practices visible
across country border, Mexico/Guatemala
● Disappearing temperate forests of Olympic Peninsula, United States
● Dramatic tree loss in Washington D.C.
United States
● Conversion of forests into
palm plantations in Papua, Indonesia
● Forest in the Demilitarized Zone (DMZ)
Korea
● Deforestation in Oudomxay, Laos
● Disturbances in forest cover in Arkhangelsk
Russia
● Boreal forests of Sakhalin, Russia
● Exploited Lappi forests in Finland
● Iguazú – home to endangered rain forests
Argentina
● Converting forests to farmlands in Rondônia
Brazil
● Regular monitoring of Amazon rainforests
● Indigenous vs. exotic forests in Valdivian, Chile
● One Planet Many People:
Atlas of Our Changing Environment

نوع زبان : انگلیسی حجم : ۴٫۷ مگا بایت
نوع فایل : اسلاید پاورپوینت تعداد اسلایدها: ۲۶ صفحه
زمان استخراج مطلب : ۲۰۱۸/۱۱/۰۲ ۱۱:۵۵:۴۷ پسوند فایل : ppt

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این مطلب در تاریخ ۲۰۱۸/۱۱/۰۲ ۱۱:۵۵:۴۷ به صورت خودکار استخراج شده است. در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. همچنین این مطلب برگرفته از وب سایت زیر است و مسئولیت انتشار آن با منبع اصلی است.

https://na.unep.net/atlas/onePlanetManyPeople/downloads/thematic//Forests.ppt

بخشی از محتوای متن استخراج شده از این فایل ppt

بخشی از محتوای متن استخراج شده از این فایل ppt

thematic slides forests forests tai national park côte d ivoire kisangani d.r. of congo itampolo madagascar british columbia canada gaspe peninsula canada angangueo mexico country boundary guatemala mexico olympic peninsula united states washington d.c. united states forests papua indonesia demilitarized zone korea oudomxay laos arkhangelsk russia sakhalin russia lappi finland iguazú south america rondônia brazil valdivian chile forests earth’s shrinking forestland ha per capita ۱۹ ۲ forests worldwide the total forest area in ۲ ۵ is just under ۴ billion hectares the rate of deforestation is about ۱۳ million hectares per year. the net change in forest area in the period ۲ ۲ ۵ is estimated at ۷.۳ million hectares year cida ۲ ۶ wri ۲ ۵ wwf ۲ ۵ tropical forests are home to about ۵ of all plant and animal species on the planet forests cover almost one third of the earth s land surface the global area of forest systems has been reduced by one half over the past three centuries approximately ۱.۵ billion tonnes of wood is harvested for fuel annually worldwide forests are among the most notable storehouses of biological diversity on the land they house over two thirds of known terrestrial species they also harbour the largest share of threatened species deforestation in tai national park côte d ivoire these images show deforestation rates in the area believed to be one of the highest in the world ۱۹۸۸ shows destruction of small forest fragments ۲ ۲ the lighter green strip bisecting the images is the result of extensive deforestation and intensive cultivation the deforestation rate in côte d’ivoire is thought to be one of the highest in tropical regions worldwide. conservation of large forested areas such as those within the boundaries of the tai national park is of primary importance especially from a continental perspective. conservation of smaller forested areas is also essential both for biological conservation purposes and to meet the needs of rural communities. a comparison of these satellite images from ۱۹۸۸ and ۲ ۲ shows the destruction of small forest fragments due to increased pressure from coffee and rubber plantations as well as their exploitation for fuel wood. the lighter green strip bisecting the images is the result of extensive deforestation and intensive cultivation between the protected grebo national forest and the tai national park. encouragingly the boundaries of the protected areas have remained relatively intact. steady deforestation of dense forest cover in kisangani congo ۱۹۷۵ the city and surrounding areas are clearly visible ۲ ۱ the cleared area around the city has grown and become consolidated spreading along rivers and roads kisangani in the democratic republic of the congo is located along the congo river in the northwestern part of the country. it is a city of roughly a half million people. in these images most of the region around kisangani is a rich green colour indicative of dense forest cover. however directly around the city is a light green zone—evidence of deforestation and conversion of the land to other uses. in the second image taken in ۲ ۱ the cleared area around the city has grown and become consolidated it has also spread along the rivers and the roads. much of the deforestation is attributed to the influx of refugees into the country. even the denser parts of the forest once thought to be impenetrable show signs of deforestation. changes in narrow coastal plain of itampolo madagascar ۱۹۷۳ shows heavily forested area home to unique and rare plant and animal species ۲ ۱ the burning of forest to clear land for dry rice cultivation has led to disappearance of forest area seen as tan madagascar is the world’s fourth largest island and has been described as an alternative world or a world apart because of its unique and rare plant and animal species. madagascar was once almost completely forested. but the practice of burning the forest to clear land for dry rice cultivation has over time denuded most of the landscape particularly in the central highlands tan colour in the ۲ ۱ image . coffee production grazing gathering fuelwood logging cattle ranching mining and other activities also have contributed to deforestation and land degradation. this set of satellite images shows a narrow coastal plain near the linta river of southwestern madagascar. between ۱۹۷۳ and ۲ ۱ the forests in this area have all but disappeared. remarkably numerous endemic species still remain in scattered forest remnants. impact of logging in british columbia canada ۱۹۷۵ ۱۹۹۹ shows the impact of logging on reasonably pristine landscape temperate forests tend to be found in mid latitude areas and are characterized by well defined seasons with warm summers and cold winters with precipitation that is sufficient for tree growth. the same regions of the world in which temperate forests occur are also home to large numbers of people. as a result temperate forests constitute one of the most altered biomes on the planet. only scattered remnants of the earth’s original temperate forests remain today some of which still contain stands of trees that are in high demand for their valuable wood. the interior of british columbia is a perfect example. logging is a major industry in british columbia carried out almost exclusively in virgin forest which is very rich in endemic biodiversity. this pair of satellite images of the fraser river valley in british columbia shows the impact of logging and other human activities during a period of about ۲۵ years from ۱۹۷۳ ۱۹۹۹. the heavy exploitation of the forest is evidenced by the patchwork quilt appearance that is typical of logged over areas. the changes in the forest due …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: جنگلی (forest), سطح (area), جنگل بری (deforestation), شمایل (image), نظر گاه (show), حطب (log), انواع (species), فرود آوردن (land), ملی (national), رودخانه ای (river),

این فایل پاورپوینت شامل ۲۶  اسلاید و به زبان انگلیسی و حجم آن ۴٫۷ مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ ۲۰۱۸/۱۱/۰۲ ۱۱:۵۵:۴۷ استخراج شده است.

https://na.unep.net/atlas/onePlanetManyPeople/downloads/thematic//Forests.ppt

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