Dear Kevin, the need of the hour is fuel. By leaving the branches, leaves and bark lying on the forest floor, you sacrifice a large amount of energy. The soil has enough minerals to support forestry and agriculture indefinitely. These minerals have very low solubility in water, and therefore the root hairs of the plants are not able to absorb them efficiently, but the soil micro-organisms can absorb them much more efficiently, because they absorb through their entire cell surface. The microbes then make the mineral nutrients available to plants. It is an accepted fact that there exists a positive correlation between the number of soil microbes per g soil and the soil fertility. Applying about 50 kg green leaves to the soil, once every three months, is enough to maintain a high microbial population density in the soil. Yours Anand On Sun, Dec 19, 2010 at 12:30 PM, Kevin <[email protected]> wrote:
> Dear John > > Leaving the tops, limbs, and stump on site after harvesting is probably a > good thing, especially if the slash is driven over by the harvesting > machinery. Crushing it down helps it to return organic matter to the soil, > and minimize the fire hazard if it is allowed to dry without contact with > the ground. > > Something like 90% of the nutrients in a tree are in the branches and > leaves or needles, and it is a big mistake to remove them from the site. It > can lead to rapid nutrient depletion. Removing the stumps for their biomass > loosens the ground excessively, and can aggravate possible erosion problems. > > > "Natural" stands, in contrast to plantations, invariably have a range of > tree species, some of which have commercial value, and some of which don't. > It makes sense to harvest the "unmerchantable stems" for fuel or charcoaling > purposes. However, leaving the tops, limbs, leaves/needles and stumps seems > to be a good step toward sustainable forest management. > > Best wishes, > > Kevin Chisholm > > > ----- Original Message ----- > *From:* John Nissen <[email protected]> > *To:* [email protected] > *Cc:* Ron Larson <[email protected]> ; > Biochar-production<[email protected]>; Discussion > biomass <[email protected]> ; Ron > Larson<[email protected]> > *Sent:* Saturday, December 18, 2010 6:21 PM > *Subject:* [biochar] Capturing carbon in the timber industry > > > > > Hi all, > > I've just had a month's holiday in New Zealand, where forestry is big > business, and was horrified by the way they apparently left wood debris > on the ground after taking the timber away. They also left stumps in > the ground to rot away. Has any thought been given into capturing the > carbon left after the timber is removed? It must be a major source of > CO2 and methane. > > Cheers, > > John > > __._,_.___ > Reply to > sender<[email protected]?subject=re%3a%20capturing%20carbon%20in%20the%20timber%20industry>| > Reply > to > group<[email protected]?subject=re%3a%20capturing%20carbon%20in%20the%20timber%20industry>| > Reply > via web > post<http://groups.yahoo.com/group/biochar/post;_ylc=X3oDMTJycWprM3ZkBF9TAzk3MzU5NzE0BGdycElkAzIyNDM4MDUyBGdycHNwSWQDMTcwNzQxODYxMgRtc2dJZAMxMjA4NwRzZWMDZnRyBHNsawNycGx5BHN0aW1lAzEyOTI3MTA5MDk-?act=reply&messageNum=12087>| > Start > a New > Topic<http://groups.yahoo.com/group/biochar/post;_ylc=X3oDMTJmc2trYmgyBF9TAzk3MzU5NzE0BGdycElkAzIyNDM4MDUyBGdycHNwSWQDMTcwNzQxODYxMgRzZWMDZnRyBHNsawNudHBjBHN0aW1lAzEyOTI3MTA5MDk-> > Messages in this > topic<http://groups.yahoo.com/group/biochar/message/12084;_ylc=X3oDMTM3dDJzdHZmBF9TAzk3MzU5NzE0BGdycElkAzIyNDM4MDUyBGdycHNwSWQDMTcwNzQxODYxMgRtc2dJZAMxMjA4NwRzZWMDZnRyBHNsawN2dHBjBHN0aW1lAzEyOTI3MTA5MDkEdHBjSWQDMTIwODQ->( > 4) > Recent Activity: > > - New > Members<http://groups.yahoo.com/group/biochar/members;_ylc=X3oDMTJndW1ic2c5BF9TAzk3MzU5NzE0BGdycElkAzIyNDM4MDUyBGdycHNwSWQDMTcwNzQxODYxMgRzZWMDdnRsBHNsawN2bWJycwRzdGltZQMxMjkyNzEwOTA5?o=6> > 1 > > Visit Your > Group<http://groups.yahoo.com/group/biochar;_ylc=X3oDMTJmZDRmN2hvBF9TAzk3MzU5NzE0BGdycElkAzIyNDM4MDUyBGdycHNwSWQDMTcwNzQxODYxMgRzZWMDdnRsBHNsawN2Z2hwBHN0aW1lAzEyOTI3MTA5MDk-> > MARKETPLACE > > Get great advice about dogs and cats. 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