form factor norway spruce and corsican pine

[openspaceman]

  Dean O said:

the average Basal Area is 8607cm2 (86.07m2).

 

8607cm2 is 8607/(100*100)=0.8607m2/0.1ha=8.607m2/ha

 

8.60*8.34=71.7m3/ha

[Dean O]

Oops didnt convert cm2 to m2 correctly.

 

reworking my figures (on average figures for plots)

 

plot size 0.01Ha (circle rdius of 5.6m)

 

total basal area = 8607cm2 = 8.6m2

 

plot vol = 8.6x8.34 =71.72m3

 

Ha vol = 71.72 / 0.01 = 7172 m3

 

Does that look better?

 

Thanks for your help

[openspaceman]

  Dean O said:

Oops didnt convert cm2 to m2 correctly.

 

reworking my figures (on average figures for plots)

 

plot size 0.01Ha (circle rdius of 5.6m)

 

Yes this is 0.1ha as near as makes no difference

  Quote

 

total basal area = 8607cm2 = 8.6m2

I worked this above, I make it 0.862

 

see my last post there are 10,000 cm2 to a m2

[Dean O]

Sorry I'll get there in the end

 

OK reworking of reworking -

 

But also to note is that the literature i have states that the 5.6 m plot is 0.01ha not 0.1 is this correct?

 

plot size 0.01Ha (circle rdius of 5.6m)

 

total basal area = 8607cm2 /10,000 = 0.86m2

 

plot vol = 0.86x8.34 =7.17m3

 

Ha vol = 7.17 / 0.01 = 717 m3

[openspaceman]

  Dean O said:

 

But also to note is that the literature i have states that the 5.6 m plot is 0.01ha not 0.1 is this correct?

 

 

Yes my mistake there, its =Pi()*5.6^2, paste that in excel to get m2 and then divide by 10000 to get to ha.

 

That's a fair crop, better than what was planted on Kilvey Hill in 69.

[Dean O]

Thank you very much for the guidance Catweazel