Regrowth forest -taastuv mets. Mets, mis ise uuesti üles kasvab peale põlenguid või loodus katastroofide toimel langeb. Rotation period rotatsiooni periood. Periood metsa asutamise ja raie vahel. Salinity - soolsus. Soola konsetratsioon mullas ja vees, mida mõõdetakse mg/l kohta. Seedlings seemik(seemnest kasvatatud taim). Noored puud, mida kasutatakse ettevalmistatud maade taasmetsastamiseks. Silviculture metsakasvatus. Kunst ja teadus mis kontrollib puude kasvu, koostist, tervisehoidu ja kvaliteeti. Soil erosion - pinnase erosiooni. Uhutakse ära mulla pealmine viljakas kiht paduvihmade ja üleujutuste mõjul.
million of these are children. Every day people are trying to survive and hoping to see tomorrow, hoping that they wouldn’t die in dehydration. Because of the fast growing population in the world the competition for water is bigger every day and more than 3.4 million people die each year from a water related diseases, that is almost the entire city of Los Angeles. Though you may think that water is very common on our planet, but most of it is circulating in oceans and due the high salinity, it can’t be used to satisfy people’s needs. Clean water is only 3% of the World’s whole water supply and even though most of it is in permafrost. Water cleaning is expensive and indicative. That is why we need to use water sparingly. You don’t have to do much to use water sparingly. Just don’t let run the water when you brush your teeth because you may waste about 30 litres of water per day with that, all depending on the time it takes for you
Keskmine sügavus, m Max sügavus, m Keskmine psu vee pinnakihis Suur Belt 18 15 Øresund 8 Läänemeri 60 250 6 Põhjameri 100 700 35 Haliinsus mitu grammi soola on liitris vees, Joonis 1. Läänemere pinnavee soolasus Psu Practical salinity units vee elektrijuhtivus standard KCl lahuse suhtes 1 Joonis 2. Läänemere soolsus läbilõigul Taani väinadest Neeva jõe suundmeni. Läänemeres elavad seega ühelt poolt liigid, kes koevad: · Magevees o näiteks haug, luts, lõhelised, karpkalalised, ahvenalised · Põhjameres ja ookeanis
Polaaraladel on tänu jää tekkele allesjäänud vesi kõrge soolsusega ja väga külm. Sealne vesi ,,sukeldub" ja liigub mööda ookeani sügavamaid kihte kuni soojemate laiuste juures taas kõrgemale tõuseb. Globaalsed ookeanihoovused Selliseid massiivseid hoovuseid nimetatakse ookeani konveieriks e. termohaliinseks tsirkulatsiooniks. Thermohaline circulation oceabic circulation controlled by horizontal differences in temperature and salinity. , . Ookeani konveier Soojus vabaneb atmosfääri Soe pinna- hoovus Külm soola- ne süva- hoovus Soojus vabaneb atmosfääri Ookeani pinnahoovused
10 Kasutatud kirjandus Abbet, C., Mayor, R., Roguet, D., Spichiger, R., Hamburger, M., & Potterat, O. (2014). Ethnobotanical survey on wild alpine food plants in Lower and Central Valais (Switzerland). Journal of Ethnopharmacology, 151(1), 624634. http://doi.org/10.1016/j.jep.2013.11.022 Al-Hawija, B. N., Partzsch, M., & Hensen, I. (2012). Effects of temperature, salinity and cold stratification on seed germination in halophytes. Nordic Journal of Botany, 30(5), 627634. http://doi.org/10.1111/j.1756-1051.2012.01314.x Anto, S., & Denisow, B. (2014). Nectar production and carbohydrate composition across floral sexual phases: contrasting patterns in two protandrous Aconitum species (Delphinieae, Ranunculaceae). Flora - Morphology, Distribution, Functional Ecology of Plants, 209(9), 464470. http://doi.org/10.1016/j.flora.2014.07.001 Anto, S
kinetic energy. Several commercial prototypes have been build, and more are in development. * Wave power uses the energy in waves. Wave power machines usually take the form of floating or neutrally buoyant structures which move relative to one another or to a fixed point. Wave power has now reached commercialization. * Osmotic power or salinity gradient power, is the energy retrieved from the difference in the salt concentration between seawater and river water. Reverse electrodialysis (PRO) is in the research and testing phase. * Vortex power is generated by placing obstacles in rivers in order to cause the formation of vortices which can then be tapped for energy. * Deep lake water cooling, although not technically an energy generation method, can save a lot of energy in summer
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