[Generation mechanism of woodland runoff and sediment on Loess Plateau under hypo-rainfall--a case study of artificial P. tabulaeformis and secondary natural P. dadidiana stands].
Identifieur interne : 003F10 ( Main/Exploration ); précédent : 003F09; suivant : 003F11[Generation mechanism of woodland runoff and sediment on Loess Plateau under hypo-rainfall--a case study of artificial P. tabulaeformis and secondary natural P. dadidiana stands].
Auteurs : Chengzhong Pan [République populaire de Chine] ; Zhouping ShangguanSource :
- Ying yong sheng tai xue bao = The journal of applied ecology [ 1001-9332 ] ; 2005.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Silicon Dioxide, Soil, Water.
- analysis : Geologic Sediments.
- growth & development : Pinus, Populus.
- Rain.
Abstract
Based on the long-term observation and from the viewpoints of water balance and runoff-and sediment generation, this paper studied the generation processes of runoff and sediment on two typical woodlands, artificial P. tabulaeformis and secondary natural P. dadidiana, and uncultivated slope-land in Loess Plateau under hypo-rainfall. The results showed that within the range of 5.0 - 50.0 mm rainfall, the total interception of canopy and litter was 15.45 % - 56.80 % for P. tabulaeformis and 20.56% - 47.81% for P. dadidiana, and decreased with increasing rainfall. Woodlands had a higher soil water infiltration capacity than uncultivated slope-land, especially in 0-20 cm soil layer. Both the two woodlands did not generate runoff under regular rainfall. Under the assumed rainfall of 2.5 mm x min(-1) intensity and 30 min duration, P. dadidiana stand did not produce runoff, but the runoff velocity and sediment-carrying capacity of uncultivated slope-land were 23.5 times, and runoff shearing stress and energy were 8 times as much as P. tabulaeformis stand. The runoff-and sediment generation on P. tabulaeformis stand decreased by 87.6% and 99.4%, respectively, compared with those on uncultivated slopeland, which was well accorded with the average observed value in runoff plots during 1988 - 2000. The theoretical analysis on the generation mechanism of woodland runoff and sediment may be effective to evaluate the benefits of forest in soil and water conservation.
PubMed: 16355768
Affiliations:
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Le document en format XML
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<author><name sortKey="Pan, Chengzhong" sort="Pan, Chengzhong" uniqKey="Pan C" first="Chengzhong" last="Pan">Chengzhong Pan</name>
<affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Instiute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China. mlpcz@sina.com</nlm:affiliation>
<country xml:lang="fr">République populaire de Chine</country>
<wicri:regionArea>State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Instiute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100</wicri:regionArea>
<wicri:noRegion>Yangling 712100</wicri:noRegion>
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<author><name sortKey="Shangguan, Zhouping" sort="Shangguan, Zhouping" uniqKey="Shangguan Z" first="Zhouping" last="Shangguan">Zhouping Shangguan</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">[Generation mechanism of woodland runoff and sediment on Loess Plateau under hypo-rainfall--a case study of artificial P. tabulaeformis and secondary natural P. dadidiana stands].</title>
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<affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Instiute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China. mlpcz@sina.com</nlm:affiliation>
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<term>Rain (MeSH)</term>
<term>Silicon Dioxide (analysis)</term>
<term>Soil (analysis)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Eau (analyse)</term>
<term>Pinus (croissance et développement)</term>
<term>Pluie (MeSH)</term>
<term>Populus (croissance et développement)</term>
<term>Silice (analyse)</term>
<term>Sol (analyse)</term>
<term>Sédiments géologiques (analyse)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Silicon Dioxide</term>
<term>Soil</term>
<term>Water</term>
</keywords>
<keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Eau</term>
<term>Silice</term>
<term>Sol</term>
<term>Sédiments géologiques</term>
</keywords>
<keywords scheme="MESH" qualifier="analysis" xml:lang="en"><term>Geologic Sediments</term>
</keywords>
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<term>Populus</term>
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<term>Populus</term>
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<front><div type="abstract" xml:lang="en">Based on the long-term observation and from the viewpoints of water balance and runoff-and sediment generation, this paper studied the generation processes of runoff and sediment on two typical woodlands, artificial P. tabulaeformis and secondary natural P. dadidiana, and uncultivated slope-land in Loess Plateau under hypo-rainfall. The results showed that within the range of 5.0 - 50.0 mm rainfall, the total interception of canopy and litter was 15.45 % - 56.80 % for P. tabulaeformis and 20.56% - 47.81% for P. dadidiana, and decreased with increasing rainfall. Woodlands had a higher soil water infiltration capacity than uncultivated slope-land, especially in 0-20 cm soil layer. Both the two woodlands did not generate runoff under regular rainfall. Under the assumed rainfall of 2.5 mm x min(-1) intensity and 30 min duration, P. dadidiana stand did not produce runoff, but the runoff velocity and sediment-carrying capacity of uncultivated slope-land were 23.5 times, and runoff shearing stress and energy were 8 times as much as P. tabulaeformis stand. The runoff-and sediment generation on P. tabulaeformis stand decreased by 87.6% and 99.4%, respectively, compared with those on uncultivated slopeland, which was well accorded with the average observed value in runoff plots during 1988 - 2000. The theoretical analysis on the generation mechanism of woodland runoff and sediment may be effective to evaluate the benefits of forest in soil and water conservation.</div>
</front>
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<DateCompleted><Year>2007</Year>
<Month>01</Month>
<Day>26</Day>
</DateCompleted>
<DateRevised><Year>2017</Year>
<Month>11</Month>
<Day>16</Day>
</DateRevised>
<Article PubModel="Print"><Journal><ISSN IssnType="Print">1001-9332</ISSN>
<JournalIssue CitedMedium="Print"><Volume>16</Volume>
<Issue>9</Issue>
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<Month>Sep</Month>
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<Title>Ying yong sheng tai xue bao = The journal of applied ecology</Title>
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<ArticleTitle>[Generation mechanism of woodland runoff and sediment on Loess Plateau under hypo-rainfall--a case study of artificial P. tabulaeformis and secondary natural P. dadidiana stands].</ArticleTitle>
<Pagination><MedlinePgn>1597-602</MedlinePgn>
</Pagination>
<Abstract><AbstractText>Based on the long-term observation and from the viewpoints of water balance and runoff-and sediment generation, this paper studied the generation processes of runoff and sediment on two typical woodlands, artificial P. tabulaeformis and secondary natural P. dadidiana, and uncultivated slope-land in Loess Plateau under hypo-rainfall. The results showed that within the range of 5.0 - 50.0 mm rainfall, the total interception of canopy and litter was 15.45 % - 56.80 % for P. tabulaeformis and 20.56% - 47.81% for P. dadidiana, and decreased with increasing rainfall. Woodlands had a higher soil water infiltration capacity than uncultivated slope-land, especially in 0-20 cm soil layer. Both the two woodlands did not generate runoff under regular rainfall. Under the assumed rainfall of 2.5 mm x min(-1) intensity and 30 min duration, P. dadidiana stand did not produce runoff, but the runoff velocity and sediment-carrying capacity of uncultivated slope-land were 23.5 times, and runoff shearing stress and energy were 8 times as much as P. tabulaeformis stand. The runoff-and sediment generation on P. tabulaeformis stand decreased by 87.6% and 99.4%, respectively, compared with those on uncultivated slopeland, which was well accorded with the average observed value in runoff plots during 1988 - 2000. The theoretical analysis on the generation mechanism of woodland runoff and sediment may be effective to evaluate the benefits of forest in soil and water conservation.</AbstractText>
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