kaashth ya lakdi ek kaarbanik padaarth hai, jiska utpaadan vrukshon(aur anya kaashthajanya paadapon) ke tane mein paravardhi jaailam ke roop mein hota hai. ek jeevit vruksh me yeh pattiyon aur anya badhte ootakon tak poshak tatvon aur jal ki aapoorti karti hai, saath hi yeh vruksh ko sahaara deta hai taaki vruksh khud khada rah kar yathaasanbhav ooainchaai aur aakaar grahan kar sake. lakdi un sabhi vaanaspatik saamagriyon ko bhi kaha jaata hai, jinke gun kaashth ke samaan hote hain, saath hi isse taiyaar ki jaane waali saamagriyaaain jaise ki tantu aur patale tukade bhi kaashth hi kahalaate hain.
sabhyata ke aarambh se hi maanav lakdi ka upayog kai prayojanon jaise ki indhan (jalaavan) aur nirmaan saamagri ke taur par kar raha hai. nirmaan saamagri ke roop mein iska upayog mukhya roop bhavan, aujaar, hathiyaar, furniture, paikejing, kalaakrutiyaan aur kaagaj aadi banaane me kiya jaata hai. lakdi ka kaal nirdhaaran kaarban deting aur kuchh prajaatiyon mein vrukshavalaya kaalakram ke dvaara kiya jaata hai. vruksh valayon ki chaudaai me saal dar saal hone vaale parivartan aur samasthaanik prachurata us samay prachalit jalavaayu ka suraag dete hain.[1]
vibhinn prakaar ke kaashth
anukram
rachana
vikaas valaya
gaanth
ant:kaashth aur rasadaaru
vibhinn prakaar
rang
sanrachana
jal ki maatra
prayog
indhan
nirmaan kaarya
yaantrik kaashth
nayi peedhi ke kaashthotpaad
kala krutiyaan
khel aur manoranjan ka saamaan
sandarbh
↑Briffa K., et al. (2008). "Trends in recent temperature and radial tree growth spanning 2000 years across northwest Eurasia.". Philosophical Transactions of the Royal Society B: Biological Sciences (363): 2271-2284. doi:10.1098/rstb.2007.2199.
