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Acta Oceanologica Sinica 2023年第11期42卷 90-97页

作者： Bingxin Huang Yue Chu Rongjuan Wang Yixiao Wang Lanping Ding College of Life Sciences Tianjin Normal UniversityTianjin 300387China Tianjin Key Laboratory of Animal and Plant Resistance Tianjin 300387China

Caulerpa sertularioides is an invasive potential blooming green alga in China but it remains poorly *** studied the effects of ecological factors on its *** conditions of ecological factors,i.e.,irradiance,temperature,and salinity,for the growth of its fragments were determined in the response surface methodology(RSM).The specific growth rates(SGR)of the fragments were determined in single-factor *** results show that the SGR of *** peaked under the conditions of irradiance 37.5μmol/(m~2·s),temperature25℃,and salinity ***,using the Box-Behnken design,the conditions were further optimized and verified to be:irradiance 39.03μmol/(m~2·s),temperature 25.29℃,and salinity 30.06,under which the SGR reached 4.66%.The results provide new theoretical data and solutions for the cultivation,invasion prediction,and monitoring of Caulerpa species in China and the *** RSM method may have great potential applications in the environmental adaptation characteristics of new macroalgal cultivars,intensive orientation cultured germplasm,and environmental hazard analysis of cultivated species in the field.

关键词： Caulerpa sertularioides fragment response surface methodology(RSM) ecological factor

Repressing sulfate-reducing bacteria growth in the affusion system of oil field by changing ecological factors

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Journal of Harbin Institute of Technology(New Series) 2008年第2期15卷 167-171页

作者：山丹马放王晨魏力郭静波 School of Municipal and Environmental Engineering Harbin Institute of Technology

Aiming at the corrosion issue of oil extraction equipments caused by sulfate-reducing bacteria （SRB） reproducing in oil field affusion system, we studied the dominant strains in the SRB community and the impact of four ecological factors on the growth of the dominant strains：temperature, pH, mineralization degree and concentration of PAM （Polyacrylamine）. The feasibility of repressing the growth of SRB by changing ecological factors was also discussed. The results indicate that Desutfobacter （one genus of SRB） is the preponderant strains of the system, and the order of the effect of four ecological factors is pH 〉 temperature 〉 the concentrations of PAM 〉 mineralization degree. The optimal pH for the highest growth rate of SRB is 8.0. No growth of SRB was observed when pH 〈 4 or pH 〉 12. The optimal temperature for the growth of SRB is 40 ℃ and the ecological amplitude is 20 -50 ℃. The appropriate concentration values of PAM is 400 -800 mg/L, beyond of which the multiplication rate and growth quantity 6f cell decrease obviously. The effect of mineralization degree of SO4^2- , HCO^3- and Na^＋ on the growth of SRB has reached an extremely remarkable level, and the change of three ions＇ concentration in water obviously effects SRB： The optimum values on the main ions in the system are Cl- of 200mg/L, HCO^3- of 900 mg/L,SO4^2- of 400 mg/L, Mg^2＋ of 60 mg/L and Na^＋ of 900 mg/L. Our results indicate that it is possible to repress the growth of SRB by changing the ecological factors in nil field affusion system.

关键词： sulfate-reducing bacteria oil field affusion system repression ecological factor

Studies on Occurrence ecological factors and Management Strategies of Ambrostoma quadriimpressum in Harbin City

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Journal of Northeast Agricultural University(English Edition) 2016年第1期23卷 9-15页

作者： Ma Xiao-chi Wei Wei Ye Le-fu Zhao Jia-nan Zhao Kui-jun Wang Zi-jian Liu Xiao-jie Fu Xue College of Agriculture Northeast Agricultural University College of Agricultural Resource and Environment Heilongjiang University National Soybean Engineering Technology Research Center Northeast Agricultural University

This paper investigated effects of four ecological variables on the damage levels of elm leaf beetle （different effects of minimum and maximum values, relations between each two variables were also explored） and discussed current management measures. The results showed that among these factors, interval between elm trees significantly affected damage level by this leaf beetle species, and perimeter of elm trunk could change this effect. On the other side, while middle values for each index were deleted, effects comparison between minimum and maximum parts showed that good root soil as overwintering was related with more damage; more severe damages on elm tree would result in more control measures used; on elm tree with bigger mink, more damages were observed; and if other elm tree was closer, more damages would occur. Secondly, good root soil was related with more measures used; good root soil was correlated with smaller perimeter; good root soil was associated with bigger interval. Thirdly, more measures were correlated with bigger perimeter; more measures were also correlated with good root soil. Fourthly, bigger perimeter was correlated with worse root soil. Current dominant control measures included chemical pesticide application preventing adult insects from descending or climbing up along trunk before and after overwintering. These results suggested that we should focus on elm leaf beetle management on all the elm trees instead of only on bigger elm trees at proper period simultaneously because occurrence on these elm trees were related intensively although this adult elm leaf beetle species could not fly and had limited movement ability.

关键词： elm leaf beetle monophagous Ulmus pumila ecological factor

Edaphic factors determining variation of two ecotypes of Leymus chinensis in North China

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Progress in Natural Science:Materials International 2006年第11期16卷 1150-1155页

作者： ZHOU Chan~1 and YANG Yunfei~2**(1. MOE Key Laboratory of Environmental Change and Natural Disasters, College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China 2. Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun 130024, China) MOE Key Laboratory of Environmental Change and Natural Disasters College of Resources Science and Technology Beijing Normal University Beijing 100875 China Key Laboratory of Vegetation Ecology Ministry of Education Institute of Grassland Science Northeast Normal University Changchun 130024 China

To identify ecotypic variation of L. chinensis, the physiological characteristics and environmental factors were measured and assessed for grey-green and yellow-green ecotypes of L. chinensis grown in the salt-alkalized and aeolian sandy soils. Although both ecotypes presented a similar salt-alkaline tolerance under the experimental conditions, they differed in several aspects. The L. chinensis grown in the aeolian sandy soils had higher water potential and chlorophyll content and lower proline content in their leaves than those grown in the salt-alkalized habitat, and the grey-green ecotype of L. chinensis in both types of soils had higher water potential, chlorophyll and proline contents than the yellow-green ecotype. Besides, grey-green ecotypes had higher salt-alkaline tolerance than the yellow-green ecotype. The stepwise regression analysis showed that soil conductance and pH value were the main ecological factors affecting the physiology of L. chinensis. From the natural distribution of the two ecotypes, we considered that salt-alkaline in the soils is the leading factor in determining ecotypic variation of L. chinensis. The two ecotypes were first named grey-green and yellow-green ecotypes respectively.

关键词： L.chinensis ecotype adaptability variation ecological factor salt-alkaline in soil.

Nest Site Preference and Fidelity of Chinese Alligator (Alligator sinensis)

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Asian Herpetological Research 2017年第4期18卷 244-252页

作者： Haiqiong YANG Lan ZHAO Qunhua HAN Shengguo FANG The Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education and StateConservation Center for Gene Resources of Endangered Wildlife College of Life Sciences Zhejiang UniversityHangzhou 310058 China

Oviparous female reptiles select nesting sites with optimal ecological factors that contribute to egg development. Chinese alligator （Alligator sinensis）, an oviparous reptile, is a critically endangered crocodilian with temperature-dependent sex determination. Research on its nesting behavior may facilitate the protection of this species. In this study, we monitored nesting behavior over eight years. We compared selected frequency of nest sites, distance from nest site to water, height from nest site top to the water surface, distance from nest site to human activity region, and canopy density between nest sites on the island and bank. The results showed that 45 nest sites were used by female alligators over eight years and each site was selected from one to 10 times. The selected frequency of nest site occurrence on the island was higher than that on the bank （P 〈 0.001）. We observed that 88% of the individual alligators （15/17） showed different degrees of nest site fidelity. However, Chinese alligators might not always be loyal to only one nest site because of environmental changes or interspecific competition at nest sites. Our findings suggest that female alligators prefer to nest at island, which might be because of the nests on the island had a higher canopy density （P = 0.010） and were further from the human activity region （P 〈 0.001） than those on the bank did. It would be beneficial to reduce human activities during the breeding season and protect the vegetation of Chinese alligator habitats in the future.

关键词： Chinese alligator ecological factor nest site preference nest site fidelity

Effects of key growth conditions on endogenous hormone content in tillering stem bases,germination of lateral buds,and biomass allocation in Indocalamus decorus

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Journal of Forestry Research 2018年第6期29卷 1547-1555页

作者： Guibin Gao Hao Zhong Zhizhuang Wu Neng Li Zheke Zhong Yanhong Pan Liangru Wu China National Bamboo Research Center Wenyi Road 310Hangzhou 310012China Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province Wenyi Road 310Hangzhou 310012China

Physiological responses and changes in growth of Indocalamus decorus *** under different ecological conditions are essential for further understanding growth regulation and adaptive mechanisms and establishing an evidence-based management system for optimal growth. In this study, the endogenous hormone content in tillering stem bases, germination of lateral buds, and biomass allocation of this bamboo species in different growth environments were investigated. Among the endogenous hormones in the basal stems of tillers, indole-3-pyruvic acid and zeatin riboside were highly correlated with lateral buds that germinated to form shoots, while gibberellic acid was highly correlated with lateral buds that germinated to form rhizomes. The best lateral bud germination characteristics were achieved with full sun, a density of six plantlets per pot, and watering every 6 days. I. decorus plantlets used different resource allocation strategies depending on treatment. Different ecological factors influenced endogenous hormones in the bamboo stem base,which affected lateral bud germination and biomass allocation.

关键词： Biomass allocation ecological factor Indocalamus decorus Lateral bud Plantlet Tillering

Suggestions on Forest ecological Compensation—Taking Mudanjiang City as an Example

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Journal of Northeast Agricultural University(English Edition) 2015年第1期22卷 66-75页

作者： Li Ying Zhang Zheng Cui Li-juan Siji K-Maunel Jia Li College of Economics and Management Northeast Agricultural University

The forest ecological compensation is an important factor to balance the interests of different areas for sustainable development and environment protection. Mudanjiang City in Heilongjiang Province of China is rich of forest resources. The forestry coverage rate reached 62.3% in 2014, after forestry conservation program from 2002. The authors explored the factors impacted on forest ecological compensation in Mudanjiang City, which was a demonstration as a case study, through experts＇ evaluation scores and AHP methodology to analyze the forest ecological compensation factors and lay the foundation for the establishment of ecological compensation mechanism. At the same time, we provided an example to explore the effective way and speed up the establishment of ecological compensation mechanism. The study found that the main factors that determined forest ecological compensation in Mudanjiang City were ecology and natural resources. Based on the analyses, some suggestions were put forward to promote the mechanism in a sustainable way.

关键词： forest ecological compensation ecological factor AHP suggestion