Environment and Ecology Current affairs February
India State of Forest Report (ISFR) 2017: Highlights Total forest and tree cover in India has increased of over 8,021 sq km (about 80.20 million hectare) which is one percent increase from 2015. Increase in the forest cover has been observed as 6,778 sq km and that of tree cover as 1,243 sq km, compared to the previous assessment in 2015 The total forest and tree cover is 24.39% In terms of area, Madhya Pradesh (77414 sq km) has the largest forest cover among all Indian states and Union Territories. . In terms of forest cover as percentage of total geographical area, Lakshadweep has topped with 90.33 per cent geographical areas under forest cover followed by Mizora m (86.27%) and Andaman & Nicobar Islands (81.73%) Top five states where maximum forest cover has increased since 2015: Andhra Pradesh 2141 sq kms, Karnataka 1101 sq kms , Kerala 1043 sq kms, Odisha 885 sq kms, Telangana 565sqkm.
Mizoram (531 sq km), Nagaland (450 sq km), Arunachal Pradesh (190 soq km), Tripura (164 sq km) and Meghalaya (116 sq km) are the five states where forest cover has decreased most. India is ranked 10th in world, with 24.4% of land area under forest and tree cover, it accounts for 2.4 % of the world surface area. 15 states/UTs have above 33% of geographical area under forest cover. . The increase in forest cover has been observed in Very Dense Forest (VDF) which absorbs maximum carbon dioxide from the atmosphere. It is followed by increase in forest cover in open forest. total mangrove cover stands at 4,921 sq km and has increased by 181 sq kms. 7 out of 12 mangrove states have shown an increase in mangrove cover Maharashtra (82 sq kms), Andhra Pradesh (37 sq kms) and Gujarat (33 sq kms) are top three gainers in terms of mangrove cover. ISFR is released every two years.
Q. Consider the following statement regarding One-horned rhinoceros. 1. It has been listed as Endangered on the IUCN Red List of Threatened Species. 2. Kaziranga National Park hosts two-thirds of the world's Great One-horned rhinoceros. Choose the correct code a) 1 only b) 2 only c) Both d) none
Answer: b Explanation: One-horned rhinoceros is the largest of the Asian Rhinos. Its preferred habitat is alluvial flood plains and areas containing tall grasslands along the foothills of Himalayas. They are found in Kaziranga, Orang, Pobitara, Jaldapara (in Assam), Dudhwa (UP) National Park. Kaziranga National Park hosts two-thirds of the world's Great one-horned rhinoceros (68% of worldwide population). It has been listed as Vulnerable on the IUCN Red List of Threatened Species.
Q. Formation of photochemical smog leads to production of? a) Nitrogen Oxides B. Hydrocarbons C. Methane D. Ozone
Answer: d Explanation: It is the chemical reaction of sunlight, nitrogen oxides and volatile organic compounds in the atmosphere, which leaves airborne particles and ground level ozone.
Q. Which of the following is the most stable ecosystem? (a) mountain (b) Ocean (c) Forest (d) desert.
Answer: b Explanation Of all the ecosystems, ocean is the largest and most stable ecosystem. Aquatic life is protected from vigorous climates and weather that are climatic conditions, problem of water supply, food, fire and artificial forces such as industrialization, farming and grazing are lacking in the oceans
Q. Consider the following statements aboutthe Primary Succession: 1. soil is absent at the time of beginning of primary succession. 2. Lichens are often the first organisms to colonize an area under primary succession Which of the above statements is/are correct? [A] 1 Only [B] 2 Only [C] Both 1 & 2 [D] Neither 1 nor 2
Biotechnology from Bangalore university, currently preparing for civil services...loves singing, writing poems,thoughts and lyrics.....