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Eco-physiological adaptability in mixtures of Robinia pseudoacacia and Fraxinus velutina and coastal eco-engineering

文献类型： 外文期刊

作者： Mao, Peili 1 ; Tang, Quan 2 ; Cao, Banghua 1 ; Liu, Jianmin 3 ; Shao, Hongbo 4 ; Cao, Zhenyu 1 ; Hao, Muzheng 5 ; Zhu, Zh 1 ;

作者机构： 1.Shandong Agr Univ, Key Lab Silviculture Shandong Prov, Taishan Mt Forest Ecosyst Res Stn Shandong Prov, Tai An 271018, Shandong, Peoples R China

2.Binzhou Forestry Bur, Binzhou 256600, Peoples R China

3.Weifang Univ Sci & Technol, Shouguang 262700, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Salt Soil Agr Ctr, Nanjing 210014, Peoples R China

5.Landscape Bur Dongying City, Dongying 257091, Peoples R China

6.Dongying Agr Hitech Ind Demonstrat Zone, Donging 257347, Peoples R China

7.Yancheng Teachers Univ, JLCBE, Xiwang Ave 1, Yancheng 224002, Peoples R China

关键词： Relative growth rate;Maximum net photosynthetic rate;Membrane permeability;Soil enzyme activity;Soil nutrient;Coastal eco-engineering

期刊名称：ECOLOGICAL ENGINEERING （ 影响因子：4.035； 五年影响因子：4.611 ）

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收录情况： SCI

摘要： Mixed-species plantations have potential advantages than monocultures. In this paper, the eco-physiological adaptability of single seedlings of nitrogen (N)-fixing Robinia pseudoacacia and non-N-fixing Fraxinus velutina were compared with mixed-species with the proportion of 1:1 under salt stress by pot experiments. The results showed that relative growth rate (RGR) and the maximum net photosynthetic rate decreased with the increase of soil salinity, while relative conductivity of leaves increased. R. pseudoacacia and F. velutina showed higher RGR in mixtures than in their monocultures, respectively. The relative conductivity of R. pseudoacacia in mixtures was similar to in monocultures while it was lower for F. velutina in mixtures than in monocultures. The activities of urease and phosphatase, hydrolysis nitrogen and available phosphorus in rhizosphere were affected significantly in salinity treatments, but total nitrogen and phosphorus did not. Compared to monocultures, F. velutina in mixtures increased urease activity and hydrolysis nitrogen in rhizosphere soil, and R. pseudoacacia increased phosphatase activity, available phosphorus and total phosphorus in rhizosphere soil. Therefore, there was a reciprocal benefit on the use of N and P in rhizosphere soil between them in mixtures, which was an important mechanism for more productivity in the mixture of R. pseudoacacia and F. velutina and an efficient method for coastal eco-engineering on large scale. (C) 2017 Elsevier B.V. All rights reserved.

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[1]Effects of salt stress on eco-physiological characteristics in Robinia pseudoacacia based on salt-soil rhizosphere. Mao, Peili,Zhang, Yujuan,Cao, Banghua,Guo, Longmei,Cao, Zhenyu,Jiang, Qiankun,Wang, Xuan,Shao, Hongbo,Shao, Hongbo.

[2]Evidence for down-regulation of ethanolic fermentation and K+ effluxes in the coleoptile of rice seedlings during prolonged anoxia. Colmer, TD,Huang, SB,Greenway, H. 2001

[3]Response of oxidative stress defense systems in rice (Oryza sativa) leaves with supplemental UV-B radiation. Dai, QJ,Yan, B,Huang, SB,Liu, XZ,Peng, SB,Miranda, MLL,Chavez, AQ,Vergara, BS,Olszyk, DM. 1997

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