To reveal changes in soil properties and leaf nutrition from different parent rock material in a Carya cathayensis forest in Lin’an City, soil and leaf samples developed from four types of parent rock material: i.e. slate, granite, phyllite, and sandy shale, were collected in July of 2008 and analyzed with a correlation analysis. Results showed soil sampled from the granite parent material had the highest organic matter (43.11 g·kg-1) and available sulfur (38.73 mg·kg-1); however, it had the lowest pH (4.72), available calcium (Ca,5.22 mg·kg-1), and available zinc (Zn,1.65 mg·kg-1). Soil sampled from the phyllite parent material had the highest available phosphorus (P,7.29 mg·kg-1), iron (Fe,31.24 mg·kg-1), and manganese (Mn,67.49 mg·kg-1). Available nutrient elements in C. cathayensis leaves for all soils were in the order: nitrogen (N)Capotassium(K)MgPMnFeZn. Additionally, leaves growing on soil developed from phyllite parent material had the highest available N, Ca, Mg, and Zn, but the lowest available P and Fe. The correlation analysis was also significant for soil pH, soil organic matter, andavailable nutrients. Correlations for N, K, Ca, Mg, and Fe content in leaves as well as content of soil nutrient element were also significant.
{"title":"Nutrient elements in soil and Carya cathayensis leaves from four parent rock materials","authors":"Cheng Shiquan, Huang Jianqin, Huang Xing-zhao, Lou Zhong, Lv Jianquan, Xia Guohua, Wu Jia-sen","doi":"10.11833/J.ISSN.2095-0756.2010.04.016","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.04.016","url":null,"abstract":"To reveal changes in soil properties and leaf nutrition from different parent rock material in a Carya cathayensis forest in Lin’an City, soil and leaf samples developed from four types of parent rock material: i.e. slate, granite, phyllite, and sandy shale, were collected in July of 2008 and analyzed with a correlation analysis. Results showed soil sampled from the granite parent material had the highest organic matter (43.11 g·kg-1) and available sulfur (38.73 mg·kg-1); however, it had the lowest pH (4.72), available calcium (Ca,5.22 mg·kg-1), and available zinc (Zn,1.65 mg·kg-1). Soil sampled from the phyllite parent material had the highest available phosphorus (P,7.29 mg·kg-1), iron (Fe,31.24 mg·kg-1), and manganese (Mn,67.49 mg·kg-1). Available nutrient elements in C. cathayensis leaves for all soils were in the order: nitrogen (N)Capotassium(K)MgPMnFeZn. Additionally, leaves growing on soil developed from phyllite parent material had the highest available N, Ca, Mg, and Zn, but the lowest available P and Fe. The correlation analysis was also significant for soil pH, soil organic matter, andavailable nutrients. Correlations for N, K, Ca, Mg, and Fe content in leaves as well as content of soil nutrient element were also significant.","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78612257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-06-20DOI: 10.11833/J.ISSN.2095-0756.2010.03.020
Xu Hua-chao, Luo Youqing
This paper summarized research in an arthropod community，an avian community，and a micro-ecological-environment after vegetative succession in response to an attack of pine wilt disease from Bursaphelenchus xylophilus. Two aspects should be considered for prevention and control of this disease：1） pest infestation methods and 2） disease influence on structure and use of wood resources. Also，at the ecosystem level，increasing tree resistance to B. xylophilus invasion as well as strategies and methods of prevention and control of the disease，should be studied. In addition，future research on pine wilt disease is discussed.［Ch，36 ref.］
{"title":"Ecosystems attacked by Bursaphelenchus xylophilus:a review","authors":"Xu Hua-chao, Luo Youqing","doi":"10.11833/J.ISSN.2095-0756.2010.03.020","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.03.020","url":null,"abstract":"This paper summarized research in an arthropod community，an avian community，and a micro-ecological-environment after vegetative succession in response to an attack of pine wilt disease from Bursaphelenchus xylophilus. Two aspects should be considered for prevention and control of this disease：1） pest infestation methods and 2） disease influence on structure and use of wood resources. Also，at the ecosystem level，increasing tree resistance to B. xylophilus invasion as well as strategies and methods of prevention and control of the disease，should be studied. In addition，future research on pine wilt disease is discussed.［Ch，36 ref.］","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81468115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-06-20DOI: 10.11833/J.ISSN.2095-0756.2010.03.012
Zhou Yuan, Ma Lüyi
Simultaneous measurement with a heat balance and sap flow measuring system（Dynamax Inc.） to monitor the sap flow of Populus euramericana 74/76 and with an automatic weather recording system to record meteorological factors，such as the photosynthetically active radiation（PAR），air temperature，and relative humidity，was undertaken. According to weather records，the three most representative weather conditions （sunny，cloudy，and rainy days） were used to analyze the relationship of water use and meteorological factors. Results showed that PAR was always the dominant factor influencing sap flow，but sap flow diurnal variation and the main factors affecting it differed with weather conditions. Differences in sap flow density were the result of multi-meteorological factors，and the overall water use for saplings was in the order：sunny days ＞ cloudy days ＞ rainy days.［Ch，3 fig. 3 tab. 27 ref.］
{"title":"Sap flow and water consumption of Populus×euramericana '74/76' saplings from cuttings planted on the North China Plain","authors":"Zhou Yuan, Ma Lüyi","doi":"10.11833/J.ISSN.2095-0756.2010.03.012","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.03.012","url":null,"abstract":"Simultaneous measurement with a heat balance and sap flow measuring system（Dynamax Inc.） to monitor the sap flow of Populus euramericana 74/76 and with an automatic weather recording system to record meteorological factors，such as the photosynthetically active radiation（PAR），air temperature，and relative humidity，was undertaken. According to weather records，the three most representative weather conditions （sunny，cloudy，and rainy days） were used to analyze the relationship of water use and meteorological factors. Results showed that PAR was always the dominant factor influencing sap flow，but sap flow diurnal variation and the main factors affecting it differed with weather conditions. Differences in sap flow density were the result of multi-meteorological factors，and the overall water use for saplings was in the order：sunny days ＞ cloudy days ＞ rainy days.［Ch，3 fig. 3 tab. 27 ref.］","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87844009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-04-20DOI: 10.11833/J.ISSN.2095-0756.2010.02.006
Shen QingYe, L. Qing, Zou Chun-jing, Zhang Chao
Farmland shelter-belts are the main component of Chongming Islands shelter forest network. The objective of this study was to select the optimum farmland shelterbelt type by determining the optimal shelter forest porosity. After choosing the main shelter forest models（Taxodium ascendens forest，mixed Metasequoia glyptostroboides（water fir）-Cryptomeria fortunei forest，M. glyptostroboides forest，Populus spp. （poplar） forest，and C. fortunei forest） and surveying the community structure，rice yield and 1 000-grain weight were determined for each shelter forest. Results showed that at different distances within the same sample plot，forest protection significantly improved rice yield and 1 000-grain weight；leaf area index also improved. Among the different models，yield increase was in the order T. ascendens＞the mixed forest of M. glyptostroboides and C. fortunei＞M. glyptostroboides＞Populus spp.＞C. fortunei. The range of shelter forest porosity was 0.31 - 0.39，and the most effective protective distance was 5H（fivefold height of the tree）－10H. In addition，the mixed forest was better than the monotypic forest with the mixed forest of M. glyptostroboides and C. fortunei being the optimal shelterbelt model. ［Ch，3 fig. 3 tab. 21 ref.］
{"title":"Rice yield of five farmland shelter-belt models on Chongming Island,Shanghai","authors":"Shen QingYe, L. Qing, Zou Chun-jing, Zhang Chao","doi":"10.11833/J.ISSN.2095-0756.2010.02.006","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.02.006","url":null,"abstract":"Farmland shelter-belts are the main component of Chongming Islands shelter forest network. The objective of this study was to select the optimum farmland shelterbelt type by determining the optimal shelter forest porosity. After choosing the main shelter forest models（Taxodium ascendens forest，mixed Metasequoia glyptostroboides（water fir）-Cryptomeria fortunei forest，M. glyptostroboides forest，Populus spp. （poplar） forest，and C. fortunei forest） and surveying the community structure，rice yield and 1 000-grain weight were determined for each shelter forest. Results showed that at different distances within the same sample plot，forest protection significantly improved rice yield and 1 000-grain weight；leaf area index also improved. Among the different models，yield increase was in the order T. ascendens＞the mixed forest of M. glyptostroboides and C. fortunei＞M. glyptostroboides＞Populus spp.＞C. fortunei. The range of shelter forest porosity was 0.31 - 0.39，and the most effective protective distance was 5H（fivefold height of the tree）－10H. In addition，the mixed forest was better than the monotypic forest with the mixed forest of M. glyptostroboides and C. fortunei being the optimal shelterbelt model. ［Ch，3 fig. 3 tab. 21 ref.］","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88463908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-04-20DOI: 10.11833/J.ISSN.2095-0756.2010.02.013
Li Yongfu, Jin Song-heng, Ye Zhengqian, Huang Jianqin, Jiang Peikun
Phosphorus（P） deficiency is one of the limiting factors to plant growth. However，scarce information is available about the effect of P deficiency on the growth of Carya cathayensis. To study root morphology，leaf photosynthesis characteristics，leaf acid phosphatase，and root secreted acid phosphatase of Carya cathayensis seedlings，a hydroponic culture experiment with treatments of sufficient P（0.1 mmolL－1） or deficient P（0.02 mmolL－1） was conducted. Results showed that compared to sufficient P，the low P treatment significantly decreased（P＜0.05） plant dry weight，plant P concentration，plant P accumulation，root length，root surface area，root volume leaf photosynthetic rate，and stomatal conductance； however，there were no significant differences for intercellular CO2 concentration. Additionally，the low P treatment significantly increased （P＜0.05） leaf acid phosphatase （by 135%） and root secreted acid phosphatase （by 159%）. Thus，the low P treatments with decreases in leaf photosynthetic rate and stomatal conductance，but no differences for intercellular CO2 concentration，showed that leaf photosynthetic rate was not due to stomatal limitation. Also，for C. cathayensis an increase in acid phosphatase activity induced by a P deficiency could be an adaptive mechanism to low P stress.［Ch，4 fig. 1 tab. 28 ref.］
{"title":"Root morphology and physiological characteristics in Carya cathayensis seedlings with low phosphorus stress.","authors":"Li Yongfu, Jin Song-heng, Ye Zhengqian, Huang Jianqin, Jiang Peikun","doi":"10.11833/J.ISSN.2095-0756.2010.02.013","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.02.013","url":null,"abstract":"Phosphorus（P） deficiency is one of the limiting factors to plant growth. However，scarce information is available about the effect of P deficiency on the growth of Carya cathayensis. To study root morphology，leaf photosynthesis characteristics，leaf acid phosphatase，and root secreted acid phosphatase of Carya cathayensis seedlings，a hydroponic culture experiment with treatments of sufficient P（0.1 mmolL－1） or deficient P（0.02 mmolL－1） was conducted. Results showed that compared to sufficient P，the low P treatment significantly decreased（P＜0.05） plant dry weight，plant P concentration，plant P accumulation，root length，root surface area，root volume leaf photosynthetic rate，and stomatal conductance； however，there were no significant differences for intercellular CO2 concentration. Additionally，the low P treatment significantly increased （P＜0.05） leaf acid phosphatase （by 135%） and root secreted acid phosphatase （by 159%）. Thus，the low P treatments with decreases in leaf photosynthetic rate and stomatal conductance，but no differences for intercellular CO2 concentration，showed that leaf photosynthetic rate was not due to stomatal limitation. Also，for C. cathayensis an increase in acid phosphatase activity induced by a P deficiency could be an adaptive mechanism to low P stress.［Ch，4 fig. 1 tab. 28 ref.］","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89605873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-04-20DOI: 10.11833/J.ISSN.2095-0756.2010.02.008
L. Xiaoping, Z. Ding-guo, yuan yanchun
The objective of the study was to know and value the environmental characters of the crop stalks based board and valuing them qualitatively with the life cycle assessment（LCA），and compared the environmental characters of the crop stalks with the characters with the wood based board. The results show that it is benefits to protect soil resources，forestry resource，keep carbon and reduce the CO2 discharge. It also gives some suggestions about the building and managing of crop stalks based board production line in order to adapt better the development of wood-based board industry.［Ch，1 fig. 1 tab. 16 ref.］
{"title":"Value environment characters of crop stalks based board with life cycle assessment(LCA)","authors":"L. Xiaoping, Z. Ding-guo, yuan yanchun","doi":"10.11833/J.ISSN.2095-0756.2010.02.008","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.02.008","url":null,"abstract":"The objective of the study was to know and value the environmental characters of the crop stalks based board and valuing them qualitatively with the life cycle assessment（LCA），and compared the environmental characters of the crop stalks with the characters with the wood based board. The results show that it is benefits to protect soil resources，forestry resource，keep carbon and reduce the CO2 discharge. It also gives some suggestions about the building and managing of crop stalks based board production line in order to adapt better the development of wood-based board industry.［Ch，1 fig. 1 tab. 16 ref.］","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83376254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-04-20DOI: 10.11833/J.ISSN.2095-0756.2010.02.005
Liu Xi-jun, Wu Zemin, Hu Qing-feng
In order to provide a theoretical basis for conservation and management of the forest landscape in Xiaokeng Small Watershed in Laoshan Nature Reserve，Anhui Province，the patch characteristics of forest landscape element were analyzed. The results showed that a mixed evergreen and deciduous broadleaf forest with an area of 66.5% and perimeter of 50.7% of the total research area was dominant. Phyllostachys pubescens forest，Cunninghamia lanceolata forest and Camellia sinensis plantation comprised 25.7% of the total area and 37.9% of the perimeter. In Xiaokeng，many small patches with a relatively fine grain structure dominated the forest landscape element. The area，perimeter，and number of patches of different forest landscape element were very uneven；the distribution trend of perimeter of different forest landscape element is similar to that of area，while the distribution of the number of patches has no obvious regularity，and the order of the numbers of patches，area，perimeter is very different； the patch shape of forest landscape elements is relatively simple. Patch characteristics indicated that the degree of fragmentation for the natural broadleaf forest was lower than for artificial landscapes of Phyllostachys pubescens，Cunninghamia lanceolata，and Camellia sinensis. Therefore，to maintain sustainable development in the region，and especially to enhance protection for the broadleaf forest matrix，intense human activity and tourism should be reduced. ［Ch，6 tab. 20 ref.］
{"title":"Patch characteristics of forest landscape element for Xiaokeng Small Watershed, Laoshan Nature Reserve, Anhui Province.","authors":"Liu Xi-jun, Wu Zemin, Hu Qing-feng","doi":"10.11833/J.ISSN.2095-0756.2010.02.005","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.02.005","url":null,"abstract":"In order to provide a theoretical basis for conservation and management of the forest landscape in Xiaokeng Small Watershed in Laoshan Nature Reserve，Anhui Province，the patch characteristics of forest landscape element were analyzed. The results showed that a mixed evergreen and deciduous broadleaf forest with an area of 66.5% and perimeter of 50.7% of the total research area was dominant. Phyllostachys pubescens forest，Cunninghamia lanceolata forest and Camellia sinensis plantation comprised 25.7% of the total area and 37.9% of the perimeter. In Xiaokeng，many small patches with a relatively fine grain structure dominated the forest landscape element. The area，perimeter，and number of patches of different forest landscape element were very uneven；the distribution trend of perimeter of different forest landscape element is similar to that of area，while the distribution of the number of patches has no obvious regularity，and the order of the numbers of patches，area，perimeter is very different； the patch shape of forest landscape elements is relatively simple. Patch characteristics indicated that the degree of fragmentation for the natural broadleaf forest was lower than for artificial landscapes of Phyllostachys pubescens，Cunninghamia lanceolata，and Camellia sinensis. Therefore，to maintain sustainable development in the region，and especially to enhance protection for the broadleaf forest matrix，intense human activity and tourism should be reduced. ［Ch，6 tab. 20 ref.］","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78398355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-04-20DOI: 10.11833/J.ISSN.2095-0756.2010.02.002
W. Guoming, Zhao Ying, Chen Bin, Lu Zhuan, Chen Ye-ping, Qiu Haisheng
After a 17-year natural restoration period on Zhoushan Island，a resurvey of seven typical pine plots of masson pine（Pinus massoniana），Japanese black pine（Pinus thunbergii），and combinations of broadleaf and conifer forests，set up before occurrence of the pine wilt disease，was undertaken. Results showed that sample sites evolved to conifer-broadleaf mixed forest or broadleaf forest types with diversity of the tree layer increasing. Ranking of tree layer diversity was as follows：succession of pure masson pine forest to deciduous broadleaf forest and mixed，evergreen and deciduous broadleaf forest＞succession of Japanese black pine forest to deciduous broadleaf forest＞succession of pure masson pine forest to conifer and broadleaf mixed forest＞succession of a mixed forest of Japanese black pine and broadleaf trees to deciduous broadleaf forest＞succession of a mixed forest of masson pine and broadleaf trees to evergreen and deciduous broadleaf mixed forest. Also，in the mixed forest of masson pine and broadleaf trees，diversity of regeneration layer and shrub layer decreased，in the Japanese black pine forest diversity of the regeneration layer increased，other forest stands changed little，and diversity of the herb layer decreased. After natural restoration，diversity of vegetation types exhibited little similarity. Based on the dynamic variation rule of species diversity during natural restoration as well as conditions on Zhoushan Island，species diversity should be enriched and the landscape improved with island native zonal vegetation. ［Ch，2 tab. 21 ref.］
{"title":"Species diversity with natural restoration in slash after control of pine wilt disease","authors":"W. Guoming, Zhao Ying, Chen Bin, Lu Zhuan, Chen Ye-ping, Qiu Haisheng","doi":"10.11833/J.ISSN.2095-0756.2010.02.002","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.02.002","url":null,"abstract":"After a 17-year natural restoration period on Zhoushan Island，a resurvey of seven typical pine plots of masson pine（Pinus massoniana），Japanese black pine（Pinus thunbergii），and combinations of broadleaf and conifer forests，set up before occurrence of the pine wilt disease，was undertaken. Results showed that sample sites evolved to conifer-broadleaf mixed forest or broadleaf forest types with diversity of the tree layer increasing. Ranking of tree layer diversity was as follows：succession of pure masson pine forest to deciduous broadleaf forest and mixed，evergreen and deciduous broadleaf forest＞succession of Japanese black pine forest to deciduous broadleaf forest＞succession of pure masson pine forest to conifer and broadleaf mixed forest＞succession of a mixed forest of Japanese black pine and broadleaf trees to deciduous broadleaf forest＞succession of a mixed forest of masson pine and broadleaf trees to evergreen and deciduous broadleaf mixed forest. Also，in the mixed forest of masson pine and broadleaf trees，diversity of regeneration layer and shrub layer decreased，in the Japanese black pine forest diversity of the regeneration layer increased，other forest stands changed little，and diversity of the herb layer decreased. After natural restoration，diversity of vegetation types exhibited little similarity. Based on the dynamic variation rule of species diversity during natural restoration as well as conditions on Zhoushan Island，species diversity should be enriched and the landscape improved with island native zonal vegetation. ［Ch，2 tab. 21 ref.］","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91519364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-04-20DOI: 10.11833/J.ISSN.2095-0756.2010.02.010
L. Mei, Wu Jiang, Wu Jiasheng, Wu Jia-sen
Based on a pot experiment，the effects of phosphorus fertilization on growth and physiological indexes and phosphorus content in leaves of one-year-old Cleyera japonica seedlings were studied. Seven P（P2O5） levels were set，0（ck），0.125，0.250，0.375，0.500，0.625 and 0.750 gpot-1. Results showed that （1） with increasing levels of P from 0 to 0.500 gpot-1，growth and physiological indexes in C. japonica seedlings increased，whereas with P increases over 0.500 gpot-1，all indexes decreased. Also，（2） P in leaves increased with increasing levels of P from 0 to 0.500 gpot-1 but decreased gradually with further P. Finally，（3） quadric relationships between growth indexes and P were noted. Based on growth and physiological indexes for one-year-old C. japonica seedlings，proper application of P was from 0.441 to 0.603 gpot-1.［Ch，2 fig. 5 tab. 11 ref.］
{"title":"Phosphorus fertilization with Cleyera japonica seedlings","authors":"L. Mei, Wu Jiang, Wu Jiasheng, Wu Jia-sen","doi":"10.11833/J.ISSN.2095-0756.2010.02.010","DOIUrl":"https://doi.org/10.11833/J.ISSN.2095-0756.2010.02.010","url":null,"abstract":"Based on a pot experiment，the effects of phosphorus fertilization on growth and physiological indexes and phosphorus content in leaves of one-year-old Cleyera japonica seedlings were studied. Seven P（P2O5） levels were set，0（ck），0.125，0.250，0.375，0.500，0.625 and 0.750 gpot-1. Results showed that （1） with increasing levels of P from 0 to 0.500 gpot-1，growth and physiological indexes in C. japonica seedlings increased，whereas with P increases over 0.500 gpot-1，all indexes decreased. Also，（2） P in leaves increased with increasing levels of P from 0 to 0.500 gpot-1 but decreased gradually with further P. Finally，（3） quadric relationships between growth indexes and P were noted. Based on growth and physiological indexes for one-year-old C. japonica seedlings，proper application of P was from 0.441 to 0.603 gpot-1.［Ch，2 fig. 5 tab. 11 ref.］","PeriodicalId":17498,"journal":{"name":"Journal of the Zhejiang Forestry College","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80997859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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