[Decomposition of Triploid populus tomentosa fine root and Lolium multiflorum grass root in a composite ecosystem and their nutrient dynamics].
Identifieur interne : 003E63 ( Main/Curation ); précédent : 003E62; suivant : 003E64[Decomposition of Triploid populus tomentosa fine root and Lolium multiflorum grass root in a composite ecosystem and their nutrient dynamics].
Auteurs : Bing Fan [République populaire de Chine] ; Xianwei Li ; Jian Zhang ; Wende Chen ; Huixia DongSource :
- Ying yong sheng tai xue bao = The journal of applied ecology [ 1001-9332 ] ; 2005.
Descripteurs français
- KwdFr :
- MESH :
- analyse : Sol.
- génétique : Populus.
- métabolisme : Lolium, Populus, Racines de plante.
- Polyploïdie, Écosystème.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Soil.
- genetics : Populus.
- metabolism : Lolium, Plant Roots, Populus.
- Ecosystem, Polyploidy.
Abstract
This paper studied the root decomposition and its nutrient dynamics of Triploid populus tomentosa and Lolium multiflorum in a plantation converted from farmland at Tianquan County of Sichuan Province. The results showed that the weight loss rate of fine root and grass root showed an exponential relationship with time, with an annual loss of 76.17%, 69.80%, 73.44% and 79.53% for fine roots of 0 approximately 1, 1 approximately 2 and 0 approximately 2 mm in diameter and grass root, respectively. During the decomposition of fine roots, their N and Ca contents increased, while P, K and Mg contents were in adverse. The nutrient contents of grass root during its decomposition had an irregular variation. The remaining percentage of fine root P, K and Mg had the same trend as root weight loss during its decomposition, while that of N and Ca had a slight decrease. For grass root, its N, P, K, Ca and Mg contents declined rapidly at the initial stage of decomposition, and then decreased slowly with irregular deposition rate.
PubMed: 16471334
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pubmed:16471334Le document en format XML
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<author><name sortKey="Fan, Bing" sort="Fan, Bing" uniqKey="Fan B" first="Bing" last="Fan">Bing Fan</name>
<affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Ecological Forestry Engineering, Sichuan Agricultural University, Ya'an, China. szwfb@163.com</nlm:affiliation>
<country xml:lang="fr">République populaire de Chine</country>
<wicri:regionArea>State Key Laboratory of Ecological Forestry Engineering, Sichuan Agricultural University, Ya'an</wicri:regionArea>
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<author><name sortKey="Li, Xianwei" sort="Li, Xianwei" uniqKey="Li X" first="Xianwei" last="Li">Xianwei Li</name>
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<author><name sortKey="Zhang, Jian" sort="Zhang, Jian" uniqKey="Zhang J" first="Jian" last="Zhang">Jian Zhang</name>
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<author><name sortKey="Chen, Wende" sort="Chen, Wende" uniqKey="Chen W" first="Wende" last="Chen">Wende Chen</name>
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<author><name sortKey="Dong, Huixia" sort="Dong, Huixia" uniqKey="Dong H" first="Huixia" last="Dong">Huixia Dong</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">[Decomposition of Triploid populus tomentosa fine root and Lolium multiflorum grass root in a composite ecosystem and their nutrient dynamics].</title>
<author><name sortKey="Fan, Bing" sort="Fan, Bing" uniqKey="Fan B" first="Bing" last="Fan">Bing Fan</name>
<affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Ecological Forestry Engineering, Sichuan Agricultural University, Ya'an, China. szwfb@163.com</nlm:affiliation>
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<author><name sortKey="Li, Xianwei" sort="Li, Xianwei" uniqKey="Li X" first="Xianwei" last="Li">Xianwei Li</name>
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<author><name sortKey="Zhang, Jian" sort="Zhang, Jian" uniqKey="Zhang J" first="Jian" last="Zhang">Jian Zhang</name>
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<author><name sortKey="Chen, Wende" sort="Chen, Wende" uniqKey="Chen W" first="Wende" last="Chen">Wende Chen</name>
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<series><title level="j">Ying yong sheng tai xue bao = The journal of applied ecology</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ecosystem (MeSH)</term>
<term>Lolium (metabolism)</term>
<term>Plant Roots (metabolism)</term>
<term>Polyploidy (MeSH)</term>
<term>Populus (genetics)</term>
<term>Populus (metabolism)</term>
<term>Soil (analysis)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Lolium (métabolisme)</term>
<term>Polyploïdie (MeSH)</term>
<term>Populus (génétique)</term>
<term>Populus (métabolisme)</term>
<term>Racines de plante (métabolisme)</term>
<term>Sol (analyse)</term>
<term>Écosystème (MeSH)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Soil</term>
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<keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Sol</term>
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<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Populus</term>
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<keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Populus</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Lolium</term>
<term>Plant Roots</term>
<term>Populus</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Lolium</term>
<term>Populus</term>
<term>Racines de plante</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Ecosystem</term>
<term>Polyploidy</term>
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<keywords scheme="MESH" xml:lang="fr"><term>Polyploïdie</term>
<term>Écosystème</term>
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<front><div type="abstract" xml:lang="en">This paper studied the root decomposition and its nutrient dynamics of Triploid populus tomentosa and Lolium multiflorum in a plantation converted from farmland at Tianquan County of Sichuan Province. The results showed that the weight loss rate of fine root and grass root showed an exponential relationship with time, with an annual loss of 76.17%, 69.80%, 73.44% and 79.53% for fine roots of 0 approximately 1, 1 approximately 2 and 0 approximately 2 mm in diameter and grass root, respectively. During the decomposition of fine roots, their N and Ca contents increased, while P, K and Mg contents were in adverse. The nutrient contents of grass root during its decomposition had an irregular variation. The remaining percentage of fine root P, K and Mg had the same trend as root weight loss during its decomposition, while that of N and Ca had a slight decrease. For grass root, its N, P, K, Ca and Mg contents declined rapidly at the initial stage of decomposition, and then decreased slowly with irregular deposition rate.</div>
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<ArticleTitle>[Decomposition of Triploid populus tomentosa fine root and Lolium multiflorum grass root in a composite ecosystem and their nutrient dynamics].</ArticleTitle>
<Pagination><MedlinePgn>2030-4</MedlinePgn>
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<Abstract><AbstractText>This paper studied the root decomposition and its nutrient dynamics of Triploid populus tomentosa and Lolium multiflorum in a plantation converted from farmland at Tianquan County of Sichuan Province. The results showed that the weight loss rate of fine root and grass root showed an exponential relationship with time, with an annual loss of 76.17%, 69.80%, 73.44% and 79.53% for fine roots of 0 approximately 1, 1 approximately 2 and 0 approximately 2 mm in diameter and grass root, respectively. During the decomposition of fine roots, their N and Ca contents increased, while P, K and Mg contents were in adverse. The nutrient contents of grass root during its decomposition had an irregular variation. The remaining percentage of fine root P, K and Mg had the same trend as root weight loss during its decomposition, while that of N and Ca had a slight decrease. For grass root, its N, P, K, Ca and Mg contents declined rapidly at the initial stage of decomposition, and then decreased slowly with irregular deposition rate.</AbstractText>
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