Change in CO2 balance under a series of forestry activities in a cool‐temperate mixed forest with dense undergrowth
Identifieur interne : 000706 ( Main/Exploration ); précédent : 000705; suivant : 000707Change in CO2 balance under a series of forestry activities in a cool‐temperate mixed forest with dense undergrowth
Auteurs : Kentaro Takagi ; Karibu Fukuzawa ; Naishen Liang ; Masazumi Kayama ; Mutsumi Nomura ; Hajime Hojyo ; Sadao Sugata ; Hideaki Shibata ; Tatsuya Fukazawa ; Yoshiyuki Takahashi ; Tatsuro Nakaji ; Hiroyuki Oguma ; Masayoshi Mano ; Yukio Akibayashi ; Takeshi Murayama [Japon] ; Takayoshi Koike ; Kaichiro Sasa ; Yasumi FujinumaSource :
- Global Change Biology [ 1354-1013 ] ; 2009-05.
English descriptors
- KwdEn :
Abstract
To evaluate the effects on CO2 exchange of clearcutting a mixed forest and replacing it with a plantation, 4.5 years of continuous eddy covariance measurements of CO2 fluxes and soil respiration measurements were conducted in a conifer‐broadleaf mixed forest in Hokkaido, Japan. The mixed forest was a weak carbon sink (net ecosystem exchange, −44 g C m−2 yr−1), and it became a large carbon source (569 g C m−2 yr−1) after clearcutting. However, the large emission in the harvest year rapidly decreased in the following 2 years (495 and 153 g C m−2 yr−1, respectively) as the gross primary production (GPP) increased, while the total ecosystem respiration (RE) remained relatively stable. The rapid increase in GPP was attributed to an increase in biomass and photosynthetic activity of Sasa dwarf bamboo, an understory species. Soil respiration increased in the 3 years following clearcutting, in the first year mainly owing to the change in the gap ratio of the forest, and in the following years because of increased root respiration by the bamboo. The ratio of soil respiration to RE increased from 44% in the forest to nearly 100% after clearcutting, and aboveground parts of the vegetation contributed little to the RE although the respiration chamber measurements showed heterogeneous soil condition after clearcutting.
Url:
DOI: 10.1111/j.1365-2486.2008.01795.x
Affiliations:
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Nomura</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Hojyo, Hajime" sort="Hojyo, Hajime" uniqKey="Hojyo H" first="Hajime" last="Hojyo">Hajime Hojyo</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Sugata, Sadao" sort="Sugata, Sadao" uniqKey="Sugata S" first="Sadao" last="Sugata">Sadao Sugata</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Shibata, Hideaki" sort="Shibata, Hideaki" uniqKey="Shibata H" first="Hideaki" last="Shibata">Hideaki Shibata</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Fukazawa, Tatsuya" sort="Fukazawa, Tatsuya" uniqKey="Fukazawa T" first="Tatsuya" last="Fukazawa">Tatsuya Fukazawa</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Takahashi, Yoshiyuki" sort="Takahashi, Yoshiyuki" uniqKey="Takahashi Y" first="Yoshiyuki" last="Takahashi">Yoshiyuki Takahashi</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Nakaji, Tatsuro" sort="Nakaji, Tatsuro" uniqKey="Nakaji T" first="Tatsuro" last="Nakaji">Tatsuro Nakaji</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Oguma, Hiroyuki" sort="Oguma, Hiroyuki" uniqKey="Oguma H" first="Hiroyuki" last="Oguma">Hiroyuki Oguma</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Mano, Masayoshi" sort="Mano, Masayoshi" uniqKey="Mano M" first="Masayoshi" last="Mano">Masayoshi Mano</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Akibayashi, Yukio" sort="Akibayashi, Yukio" uniqKey="Akibayashi Y" first="Yukio" 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sortKey="Fujinuma, Yasumi" sort="Fujinuma, Yasumi" uniqKey="Fujinuma Y" first="Yasumi" last="Fujinuma">Yasumi Fujinuma</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author></analytic><monogr></monogr><series><title level="j">Global Change Biology</title><idno type="ISSN">1354-1013</idno><idno type="eISSN">1365-2486</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2009-05">2009-05</date><biblScope unit="volume">15</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="1275">1275</biblScope><biblScope unit="page" to="1288">1288</biblScope></imprint><idno type="ISSN">1354-1013</idno></series><idno type="istex">868F739C3AEF315EFAECC7A5BC0EE205F37E7D00</idno><idno type="DOI">10.1111/j.1365-2486.2008.01795.x</idno><idno type="ArticleID">GCB1795</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1354-1013</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>clearcut harvesting</term><term>eddy covariance</term><term>gross primary production</term><term>hybrid larch</term><term>net ecosystem exchange</term><term>plant area index</term><term>plantation</term><term>soil respiration</term><term>succession</term><term>total ecosystem respiration</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To evaluate the effects on CO2 exchange of clearcutting a mixed forest and replacing it with a plantation, 4.5 years of continuous eddy covariance measurements of CO2 fluxes and soil respiration measurements were conducted in a conifer‐broadleaf mixed forest in Hokkaido, Japan. The mixed forest was a weak carbon sink (net ecosystem exchange, −44 g C m−2 yr−1), and it became a large carbon source (569 g C m−2 yr−1) after clearcutting. However, the large emission in the harvest year rapidly decreased in the following 2 years (495 and 153 g C m−2 yr−1, respectively) as the gross primary production (GPP) increased, while the total ecosystem respiration (RE) remained relatively stable. The rapid increase in GPP was attributed to an increase in biomass and photosynthetic activity of Sasa dwarf bamboo, an understory species. Soil respiration increased in the 3 years following clearcutting, in the first year mainly owing to the change in the gap ratio of the forest, and in the following years because of increased root respiration by the bamboo. The ratio of soil respiration to RE increased from 44% in the forest to nearly 100% after clearcutting, and aboveground parts of the vegetation contributed little to the RE although the respiration chamber measurements showed heterogeneous soil condition after clearcutting.</div></front></TEI><affiliations><list><country><li>Japon</li></country></list><tree><noCountry><name sortKey="Akibayashi, Yukio" sort="Akibayashi, Yukio" uniqKey="Akibayashi Y" first="Yukio" last="Akibayashi">Yukio Akibayashi</name><name sortKey="Fujinuma, Yasumi" sort="Fujinuma, Yasumi" uniqKey="Fujinuma Y" first="Yasumi" last="Fujinuma">Yasumi Fujinuma</name><name sortKey="Fukazawa, Tatsuya" sort="Fukazawa, Tatsuya" uniqKey="Fukazawa T" first="Tatsuya" last="Fukazawa">Tatsuya Fukazawa</name><name sortKey="Fukuzawa, Karibu" sort="Fukuzawa, Karibu" uniqKey="Fukuzawa K" first="Karibu" last="Fukuzawa">Karibu Fukuzawa</name><name sortKey="Hojyo, Hajime" sort="Hojyo, Hajime" uniqKey="Hojyo H" first="Hajime" last="Hojyo">Hajime Hojyo</name><name sortKey="Kayama, Masazumi" sort="Kayama, Masazumi" uniqKey="Kayama M" first="Masazumi" last="Kayama">Masazumi Kayama</name><name sortKey="Koike, Takayoshi" sort="Koike, Takayoshi" uniqKey="Koike T" first="Takayoshi" last="Koike">Takayoshi Koike</name><name sortKey="Liang, Naishen" sort="Liang, Naishen" uniqKey="Liang N" first="Naishen" last="Liang">Naishen Liang</name><name sortKey="Mano, Masayoshi" sort="Mano, Masayoshi" uniqKey="Mano M" first="Masayoshi" last="Mano">Masayoshi Mano</name><name sortKey="Nakaji, Tatsuro" sort="Nakaji, Tatsuro" uniqKey="Nakaji T" first="Tatsuro" last="Nakaji">Tatsuro Nakaji</name><name sortKey="Nomura, Mutsumi" sort="Nomura, Mutsumi" uniqKey="Nomura M" first="Mutsumi" last="Nomura">Mutsumi Nomura</name><name sortKey="Oguma, Hiroyuki" sort="Oguma, Hiroyuki" uniqKey="Oguma H" first="Hiroyuki" last="Oguma">Hiroyuki Oguma</name><name sortKey="Sasa, Kaichiro" sort="Sasa, Kaichiro" uniqKey="Sasa K" first="Kaichiro" last="Sasa">Kaichiro Sasa</name><name sortKey="Shibata, Hideaki" sort="Shibata, Hideaki" uniqKey="Shibata H" first="Hideaki" last="Shibata">Hideaki Shibata</name><name sortKey="Sugata, Sadao" sort="Sugata, Sadao" uniqKey="Sugata S" first="Sadao" last="Sugata">Sadao Sugata</name><name sortKey="Takagi, Kentaro" sort="Takagi, Kentaro" uniqKey="Takagi K" first="Kentaro" last="Takagi">Kentaro Takagi</name><name sortKey="Takahashi, Yoshiyuki" sort="Takahashi, Yoshiyuki" uniqKey="Takahashi Y" first="Yoshiyuki" last="Takahashi">Yoshiyuki Takahashi</name></noCountry><country name="Japon"><noRegion><name sortKey="Murayama, Takeshi" sort="Murayama, Takeshi" uniqKey="Murayama T" first="Takeshi" last="Murayama">Takeshi Murayama</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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