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Spatial–temporal variability of terrestrial vegetation productivity in the Yangtze River Basin during 2000–2009

Journal of Plant Ecology 2014年第1期7卷 10-23页

作者： Yulong Zhang conghe song Kerong Zhang Xiaoli Cheng Quanfa Zhang Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical GardenChinese Academy of Sciences1 Moshan RoadWuhan 430074China Department of Geography University of North Carolina209 South RoadChapel HillNC 27599USA Department of Life Science University of the Chinese Academy of Sciences19 Yuquan RoadBeijing 100049China School of Forestry and Landscape Architecture Anhui Agricultural University130 West Changjiang RoadHefeiAnhui 230026China

Aims Terrestrial net primary production(NPP),the balance of gross primary production(GPP)and autotrophic respiration(AR),is a critical measure of carbon sequestration capacity for the Earth’s land *** aim of this study was to understand the spatio-temporal variability of NPP associated with GPP and AR in the Yangtze River Basin(YRB),China,from 2000 to 2009 during which the basin warmed *** We first derived AR and carbon-use efficiency(CUE)from the improved Moderate Resolution Imaging Spectroradiometer GPP/NPP products(MOD17)and then conducted spatial analysis to quantify how NPP relates to GPP,AR and their relationship with key observed climate variables(temperature,precipitation and sunshine percentage)in the YRB during 2000–*** Findings The spatial pattern of NPP in the YRB was predominantly determined by GPP and further modified by *** GPP and relatively low AR made the southern Jinshajiang sub-basin the most productive area in NPP in the YRB.A large portion of the YRB experienced a warmer and drier climate trend in the growing season during 2000–*** the upper reaches of the basin,possessing a relatively low temperature base,increases in temperature led to greater increases in GPP than those in AR,resulting in greater increased ***,in the middle and lower reaches of the basin where the base temperature is relatively high,increases in temperature led to greater increases in AR than those in GPP,leading to decreases in ***,86.7%of the vegetated area showed a consistent GPP and NPP trend through time with 71.3%of the vegetated area having a positive trend both in GPP and NPP,and the remaining 13.3%of vegetated areas showed an opposite trend in GPP and NPP,with positive GPP and negative NPP trajectories dominating(10.1%of vegetated area)the *** climate warming generally had positive effects on vegetation growth in most areas of the basin,areas with increased NPP(74.5%)were less extensive than t

关键词： Yangtze River Basin climate warming GPP AR NPP CUE spatial-temporal variability

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Effects of Forest on the Budgets of Water，Energy and Gases in the Environment

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Forest Ecosystems 1994年第2期 1-12页

作者： He Qingtang ,song conghe College of Forest Resources and Environment,Beijing Forestry UniversityBeijing l00083,P.R. China

ＥｆｆｅｃｔｓｏｆＦｏｒｅｓｔｏｎｔｈｅＢｕｄｇｅｔｓｏｆＷａｔｅｒ，ＥｎｅｒｇｙａｎｄＧａｓｅｓｉｎｔｈｅＥｎｖｉｒｏｎｍｅｎｔＨｅＱｉｎｇｔａｎｇ，ＳｏｎｇＣｏｎｇｈｅＣｏｌｌｅｇｅｏｆＦｏｒｅｓｔＲｅｓｏｕｒｃ... 详细信息

ＥｆｆｅｃｔｓｏｆＦｏｒｅｓｔｏｎｔｈｅＢｕｄｇｅｔｓｏｆＷａｔｅｒ，ＥｎｅｒｇｙａｎｄＧａｓｅｓｉｎｔｈｅＥｎｖｉｒｏｎｍｅｎｔＨｅＱｉｎｇｔａｎｇ，ＳｏｎｇＣｏｎｇｈｅＣｏｌｌｅｇｅｏｆＦｏｒｅｓｔＲｅｓｏｕｒｃｅｓａｎｄＥｎｖｉｒｏｎｍｅｎｔ，...

关键词： budgets water energy O2 CO2 forest

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纳米银抗菌机理及应用研究进展

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安徽农业大学学报 2017年第4期44卷 702-708页

作者：刘鑫任艳周子军吴跃进张从合宋远辉安徽农业大学生命科学学院合肥230036 安徽农业大学农学院合肥230036 中国科学院合肥物质科学研究院技术生物与农业工程研究所合肥230031 安徽荃银高科种业股份有限公司合肥230088

纳米银作为一类新型的抗菌材料,具有抗菌高效、广谱和不易产生耐药性等优点,如今已经广泛地运用于各行各业,但纳米银的抗菌机理尚不明确。归纳总结近年来国内外对纳米银抗菌机理的研究进展,分析阐述其应用情况,最后提出需要关注使用纳... 详细信息

纳米银作为一类新型的抗菌材料,具有抗菌高效、广谱和不易产生耐药性等优点,如今已经广泛地运用于各行各业,但纳米银的抗菌机理尚不明确。归纳总结近年来国内外对纳米银抗菌机理的研究进展,分析阐述其应用情况,最后提出需要关注使用纳米银带来的负面环境效应,以利于其更好应用。

关键词：纳米银抗菌机理应用现状环境效应

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Effects of Low Dose Radiation on Tumor Apoptosis, Cell Cycle and Apoptosis-Related Protein Bcl-2 in Tumor-Bearing Mice

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The Chinese-German Journal of Clinical Oncology 2005年第2期4卷 89-92页

作者：于洪升宋爱琴费从合王卓敏邱文生山东青岛大学医学院附属医院肿瘤科 266003

To study the effects of low dose radiation (LDR) on tumor apoptosis, cellcycle progression and changes of apoptosis-related protein Bcl-2 in tumor-bearing mice. Methods:Male mice of Kunming strain were implanted subcutaneously with S180 sarcoma cells in the left inguenas an in situ experimental animal model. Seven days later, the mice were subjected to 75 mGywhole-body γ-irradiation. At 24 and 48 h after the irradiation, all mice were sacrificed. The tumorsizes were measured, and tumor cell apoptosis and cell cycle progression were analyzed by flowcytometry. The expression of apoptosis-related protein Bcl-2 and the apoptotic rate of tumor cellswere observed by immunohistochemistry and electron microscopy. Results: Tumors grew significantlyslower after LDR (P < 0.05). The tumor cells were arrested in G1 phrase and the expression of Bcl-2protein decreased at 24 h. Apoptotic rate of tumor cells was increased significantly at 48 h afterLDR (P < 0.01). Conclusion: LDR could cause a G1-phase arrest and increase the apoptosis of tumorcells through the low level of apoptosis-related protein bcl-2 in the tumor-bearing mice. Theorganized immune function and anti-tumor ability are markedly increased after LDR. Our studyprovides practical evidence of clinical application to cancer treatment.

关键词： low dose radiation S180 sarcoma apoptosis cell cycle bcl-2

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卵孢白僵菌NEAU30503固态培养条件优化

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植物保护 2016年第2期42卷 123-128,135页

作者：宋龙腾张鑫鑫于洪春李克斌杜鹃刘聪鹤孙艺峰许国庆东北农业大学农学院哈尔滨150030 中国农业科学院植物保护研究所北京100193 辽宁省农业科学院植物保护研究所沈阳110161

为了提高卵孢白僵菌NEAU30503在固态培养中的产孢量,采用单因素筛选试验和响应面法对卵孢白僵菌NEAU30503固态发酵条件进行优化。在单因素试验确定最适含水量、接种量、培养温度和培养时间的基础上,应用Box-Behnken试验设计和响应面分... 详细信息

为了提高卵孢白僵菌NEAU30503在固态培养中的产孢量,采用单因素筛选试验和响应面法对卵孢白僵菌NEAU30503固态发酵条件进行优化。在单因素试验确定最适含水量、接种量、培养温度和培养时间的基础上,应用Box-Behnken试验设计和响应面分析方法优化出最佳固态培养条件为：固态培养基含水量为55%,接种量为15mL/100g,培养温度为27℃,培养时间为7.5d,在此条件下卵孢白僵菌NEAU30503烘干前单位产孢量达到36.72×10^8孢子/g。此方法适用于小型企业和生产单位对白僵菌的快速生产。

关键词：卵孢白僵菌固态培养培养条件产孢量响应面法

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