Essays about: "annual rings in trees"

Showing result 1 - 5 of 7 essays containing the words annual rings in trees.

  1. 1. Trees on contaminated soil : IS THERE A CORRELATION BETWEEN BIOAVAILABLE COMPOUNDS AND UPTAKE IN BIRCHES?

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Elisabeth Ängmyren; [2017]
    Keywords : ;

    Abstract : In this thesis a method of dry-ashing wood, sequential leaching of soil and analysis with ICP-QMS is tested as a possible way for establishing a correlation between bioavailable compounds in soil and uptake to birches. The total amount of trace elements (V, Sr, Cd, Pb and U) in stem wood and contaminated soils were analysed. READ MORE

  3. 2. Radiocarbon around the Carrington event

    University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Damien Pierce; [2016]
    Keywords : Physics and Astronomy;

    Abstract : The Sun is a volatile and complex body, understanding its behaviour is key to the continued operation of modern technology. The Carrington event was a violent white light event and generally believed to have lead to one of the largest solar storms in modern human history. READ MORE

  4. 3. Inverkan av temperatur, nederbörd och genetik på årsrings- egenskaperna hos svensk gran(Picea abies.(L)Karst)

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Mattias Larsson; [2015]
    Keywords : veddensitet; sommarved; vårved; klimat; årsringsdensitet;

    Abstract : Den svenska granen(Picea abies (L.) Karst) har ett vidsträckt utbredningsområde med ett till synes varierande klimat som påverkar granens årsringsegenskaper på olika sätt. READ MORE

  5. 4. Kärnvedsbildning i tall (Pinus sylvestris L.) : startålder samt årlig tillväxt i Västerbotten

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Steve Fahlgren; [2011]
    Keywords : splintved; ålder; bonitet; grundyta; sapwood; age; site index; basal area;

    Abstract : I Västerbotten täcks den produktiva skogsmarken till 44 % av tall. Tallar bildar kärnved, men anledningen till detta är fortfarande oklar. Det antas dock innebära fördelar att bilda denna typ av ved. Kärnved består av döda parenkym och epitelceller, medan splintveden innehåller levande celler. READ MORE

  6. 5. Vedrötor i stadsträd : biologi, detektionsmetoder och förebyggande åtgärder

    University essay from SLU/Dept. of Crop Science

    Author : Tove Hultberg; [2006]
    Keywords : rötor; stadsträd; svampar; beskärning;

    Abstract : Urban trees have very little in common with trees on natural sites, such as forests or pastures. Trees in urban environments are often planted in packed soil and in small volumes. This can lead to decreased availability of water and oxygen, as well as deteriorated ability for the soil to store nutritional elements. READ MORE