检索结果-南通市图书馆

Journal of environmental sciences 1994年第4期6卷 389-401页

作者： wang rusong, hu danreseareh center for eco-environmental sciences,chinese,chineseacademy of seiences, beijing 100085.china

china. a country with more than 1. 2 billion people, is undergoing a rapid industrializationand urbanization. While brings wealth and hopes to people, the economic prosperity has to pay the priceof the ecological degradation. What kind of dynamics and cybernetics is needed to lead a sustainabledevelopment and ecological health? How to deal with the complicated relationships between social transi-tion , economic growth and environmental change? This article is to present some theoretical and practicalconcerns from the viewpoint of human system ecology with some cases of small towns in the coastal areaof china.

关键词： sustainable development economic prosperity ecological sustainability china

eco－tourism　industry　development──An　alternative　to　sustainable　use　of　landscape　resources

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Journal of environmental sciences 1996年第3期8卷 298-307页

作者： Lu Yonglong(Research center for eco-environmental sciences, chineseacademy of sciences, beijing 100085, china) Res. Ctr. for eco-Environ. sciences Chinese Academy of Sciences Beijing 100085 China

Traditional tourism is a source of not only income and recreation but also environmental pollution and landscape resource destruction. How to leave the same or even better landscape resources to future generations is the key to sustainable development of tourism industry. ecotourism industry could be an approach to sustainable use of landscape *** connotation of eco-tourism industry and its differences from the traditional tourism in resource use were given in this paper. The ecological planning for Kangyuan recreation area is taken as an example to demonstrate how to make an eco-tourism industry development plan from a system’s point of *** terms of the characteristics of the landscape resources, advantageous geographic location and principles for eco-tourism industry development,a suitable structure of the eco-tourism industry was presented. Based on ecological suitability analysis of the landscape resource use-analysis of capacity and constraint of landscape resources, spatial distribution of the industry sectors was *** the development process, both opportunities and risks exist, cost-benefit analysis is thus made, and cost-effective strategies and policies are provided for the eco-tourism industry development.

关键词： eco-tourism resource use sustainability

Effect of external and internal phosphate status on arsenic toxicity and accumulation in rice seedlings

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Journal of environmental sciences 2009年第3期21卷 346-351页

作者： wang Lihong,DUAN Guilan Research center for eco-environmental sciences,chinese Academy of sciences,beijing 100085.china Research center for eco-environmental sciences Chinese Academy of Sciences Beijing 100085 China

Phosphorus （P） deficiency is thought to exacerbate the arsenic （As） phytotoxicity in paddy rice. The experiments were conducted to investigate the effects of external phosphate supply on As accumulation in rice and its toxicity under phosphate deficiency conditions. Rice seedlings pretreated with a phosphorus deficient nutrient solution （-P） for 14 d accumulated more As than those pretreated with a normal phosphorus supply nutrient solution （＋P）. Rice protreated with -P showed As toxicity symptoms after being exposed to 50 μmol/L arsenate for 4 h, while ＋P rice did not show any toxicity symptoms. Arsenic toxicity symptoms can be alleviated by increasing external P concentrations. The arsenate uptake rate and accumulation corresponded with the As toxicity in rice plants. Arsenic concentrations in rice roots decreased with increasing external phosphate concentrations. The lowest As accumulation and the highest P accumulation were found when the external P concentration reached 100μmol/L. In short, P deficiency increased the sensitivity of rice to arsenate and increasing of external phosphate supply could alleviate As toxicity.

关键词： phosphorus arsenate arsenic toxicity arsenic accumulation rice seedlings

2023 Guideline for the management of hypertension in the elderly population in china

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Journal of Geriatric Cardiology 2024年第6期21卷 589-630页

作者： Hypertension Branch of chinese Geriatrics Society,beijing Hypertension Association,National Clinical Research center of the Geriatric Diseases Qi huA Li FAN Zeng-Wu wang Jing LI 不详 Xuanwu Hospital Capital Medical UniversityBeijingChina chinese PLA General Hospital BeijingChina Fuwai Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Preamble Hypertension is one of the most common chronic diseases and the primary risk factor for stroke,myocardial infarction and even cardiovascular *** than half of the elderly population has high blood *** people are a unique group,and strategies for the prevention,diagnosis,evaluation,and treatment of hypertension in elderly individuals differ significantly from those in the general population.

关键词： hypertension prevention diagnosis

Rural development with environmental sustainability

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Journal of environmental sciences 1994年第4期6卷 464-470页

作者： Lu Yonglong wang rusong (Research center for eco-environmental sciences , chinese Academy of sciences , beijing 100085 , china)

Rural development is a broad and meaningful concept. It means not only economic growth butalso changes towards a better direction in economic structure , social structure , relation between human soci-ety and environment, and even political structure. Present development should not damage the environmentbut leave the same or an improved natural resource endowment as a bequest to the future. This is the devel-opment with environmental sustainability. In this paper the characteristics of rural development were reex-amined, and what environmental sustainability means and how to measure it were explicitly presented. Prac-tical approaches for achieving environmental sustainability were also given with some cases from china.

关键词： rural development sustainable development i environmental sustainability.

Sea water intrusion in coastal areas of Yellow Seaand Bohai Sea

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Journal of environmental sciences 1995年第3期7卷 374-384页

作者： Sheng Xuebin Sun Jianzhong Dai Zhaohua(Research center for eco - environmental seiences, The chineseacademy of sciences, beijing 100085, china)

ＳｅａｗａｔｅｒｉｎｔｒｕｓｉｏｎｉｎｃｏａｓｔａｌａｒｅａｓｏｆＹｅｌｌｏｗＳｅａａｎｄＢｏｈａｉＳｅａＳｈｅｎｇＸｕｅｂｉｎ；ＳｕｎＪｉａｎｚｈｏｎｇ；ＤａｉＺｈａｏｈｕａ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃ... 详细信息

ＳｅａｗａｔｅｒｉｎｔｒｕｓｉｏｎｉｎｃｏａｓｔａｌａｒｅａｓｏｆＹｅｌｌｏｗＳｅａａｎｄＢｏｈａｉＳｅａＳｈｅｎｇＸｕｅｂｉｎ；ＳｕｎＪｉａｎｚｈｏｎｇ；ＤａｉＺｈａｏｈｕａ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－ＥｎｖｉｒｏｎｍｅｎｔａｌＳｅ...

关键词： sea water intrusion coast ecological agriculture.

Combined toxicity of copper and cadmium to six rice genotypes (Oryza sativa L.)

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Journal of environmental sciences 2009年第5期21卷 647-653页

作者： huANG Yizong, hu Ying, LIU Yunxia Research center for eco-environmental sciences, chinese Academy of sciences, beijing 100085, china. Research center for eco-environmental sciences Chinese Academy of Sciences Beijing 100085 China

Accumulations of copper （Cu） and cadmium （Cd） in six rice cultivars （94D-22, 94D-54, 94D-64, Gui630, YY-1, and KY1360） were evaluated through exposure to heavy metal contamination （100 mg/kg Cu, 1.0 mg/kg Cd, and 100 mg/kg Cu ＋ 1.0 mg/kg Cd） in a greenhouse. The dry weights of shoot and root, concentrations of Cu and Cd in plant tissues and the Cu, Cd, P, Fe concentrations in the root surface iron plaques were analyzed eight weeks later after treatment. The results indicated that the plant biomass was mainly determined by rice genotypes, not Cu and Cd content in soil. Separated treatment with Cu/Cd increased each metal level in shoot, root and iron plaques. Soil Cu enhanced Cd accumulation in tissues. In contrast, Cu concentrations in shoot and root was unaffected by soil Cd. Compared to single metal contamination, combined treatment increased Cd content by 110.6%, 77.0%, and 45.2% in shoot, and by 112.7%, 51.2% and 18.4% in root for Gui630, YY-1, and KY1360, respectively. The content level of Cu or Cd in root surface iron plaques was not affected by their soil content. Cu promoted Fe accumulation in iron plaques, while Cd has no effect on P and Fe accumulation in it. The translocation of Cu and Cd from iron plaques to root and shoot was also discussed. These results might be beneficial in selecting cultivars with low heavy metal accumulation and designing strategies for soil bioremediation.

关键词： Cu Cd combined contamination soil uptake accumulation root surface iron plaques

Cleaning method of the oil field wastewater treatment by UF process

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Journal of environmental sciences 2001年第3期13卷 365-367页

作者： wang Jing rong, Xu Cheng(Research center for eco environmental sciences, chinese Academy of sciences, beijing 100085, china) 中科院生态环境研究中心北京 100085

This article introduces experiments and researches of polysulphone ultrafiltration membrane's effect on oil field polluted water and approaches renewing oil field polluted water and approaches renewing of membrane's flux by different detergents and cleaning method. Good result has been achieved by doing experiments and the renewal rate of membrane is over 90%.

关键词： Detergents Membranes Oil fields Ultrafiltration Water pollution

Urbanization, environmental consequences and management in china

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Journal of environmental sciences 1995年第1期7卷 1-11页

作者： Lu Yonglong (Research center for eco-environmental sciences),chinese Acaderny of Scieiences,beijing 100085.china) Sch Ctr for eco-Envmtl Sci Chinese Acad of Sci Beijing China China

Ｕｒｂａｎｉｚａｔｉｏｎ，ｅｎｖｉｒｏｎｍｅｎｔａｌｃｏｎｓｅｑｕｅｎｃｅｓａｎｄｍａｎａｇｅｍｅｎｔｉｎＣｈｉｎａＬｕＹｏｎｇｌｏｎｇ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－ＥｎｖｉｒｏｎｍｅｎｔａｌＳｃｉｅｎ... 详细信息

Ｕｒｂａｎｉｚａｔｉｏｎ，ｅｎｖｉｒｏｎｍｅｎｔａｌｃｏｎｓｅｑｕｅｎｃｅｓａｎｄｍａｎａｇｅｍｅｎｔｉｎＣｈｉｎａＬｕＹｏｎｇｌｏｎｇ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－ＥｎｖｉｒｏｎｍｅｎｔａｌＳｃｉｅｎｃｅｓ），ＣｈｉｎｅｓｅＡｃａｄｅ...

关键词： urbanization environmental management urban ecological planning

Dynamic pursuing ecological model concerning the nitrogen cycle in the environment of chinese mainland

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Journal of environmental sciences 1993年第1期5卷 108-123页

作者： Kang Demeng and Chen LidingResearch center for eco-environmental sciences, chinese Academy of sciences, beijing 100085, china Research center for eco-environmental sciences Chinese Academy of Sciences Beijing 100085 China. China

The paper gives a special dynamic pursuing ecological model on the bio-geochemical cycle of nitrogen in the whole range 9.6 million square kilometers of chinese mainland, basing on the reservoir-content and flux-rate of nitrogen and among the four spheres: atmosphere, pedosphere, biosphere, and hydrosphere, and the law of bio-geochemical cycle of nitrogen, the model predicted the size of reservoir capacities and fluxes of nitrogen in each sphere. Through tested and verified, the model was proven reasonable and reliable.

关键词： nitrogen cycle: fluxes flux-rate reservoir-content of nitrogen dynamic pursuing model.