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模拟自然生态法河蟹、泥鳅混养试验 被引量:5
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作者 宋长太 吴振山 《淡水渔业》 CSCD 北大核心 2002年第3期14-15,共2页
关键词 自然生态法 河蟹 泥鳅 混养
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自然生态法鉴定水稻光温敏核不育系雄性不育起点温度的研究
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作者 谢军 李必湖 +1 位作者 吴厚雄 宁鹏 《种子》 CSCD 北大核心 2004年第1期16-17,共2页
本试验是将 8个新水稻光温敏核不育系置于湖南怀化进行分期播种 ,让其在自然条件下充分表现 ,以选育出雄性不育起点温度低、育性稳定、综合农艺性状好、易于繁殖制种的水稻光温敏核不育系。结果表明 :糯S、粳 3 8S、C40S、9771S、德早S... 本试验是将 8个新水稻光温敏核不育系置于湖南怀化进行分期播种 ,让其在自然条件下充分表现 ,以选育出雄性不育起点温度低、育性稳定、综合农艺性状好、易于繁殖制种的水稻光温敏核不育系。结果表明 :糯S、粳 3 8S、C40S、9771S、德早S、H15 5S、怀 4S雄性不育起点温度在 2 3 5℃左右 ,而德es雄性不育起点温度在 2 3 5℃~ 2 4℃之间。文章对水稻光温敏核不育系鉴定方法进行了探讨。 展开更多
关键词 自然生态法 鉴定方 水稻 光温敏核不育系 雄性不育 起点温度
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煤矸石山生态修复方法综述 被引量:17
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作者 廖芳芳 郑嵩 葛皓 《环保科技》 2012年第1期21-25,共5页
随着全球性煤矸石山生态环境问题的加剧,煤矸石山生态修复被视为协调发展人类活动与自然环境的关系、解决煤矸石山可持续发展的一条有效途径。文章综述了国内外煤矸石山的生态修复方法及其优缺点,为煤矸石山的综合治理提供一定参考依据。
关键词 煤矸石山 微生物修复 生物复田 自然生态修复
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美国煤矿废弃地的生态修复 被引量:56
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作者 张成梁 B.Larry Li 《生态学报》 CAS CSCD 北大核心 2011年第1期276-285,共10页
在对美国煤矿废弃地生态修复项目实地考察的基础上,结合相关文献资料,介绍了其煤矿废弃地生态修复的管理体系、资金来源及使用\技术路线及保障措施。结合实例介绍了美国煤矿废弃地生态修复的工程措施,并重点介绍了"师法自然生态修... 在对美国煤矿废弃地生态修复项目实地考察的基础上,结合相关文献资料,介绍了其煤矿废弃地生态修复的管理体系、资金来源及使用\技术路线及保障措施。结合实例介绍了美国煤矿废弃地生态修复的工程措施,并重点介绍了"师法自然生态修复法"的新理念及其指导下的生态修复设计和生态修复工程建设。"师法自然生态修复法"是基于地形、地貌、水文、气象、气候等条件,模拟自然的生态修复过程。"师法自然生态修复法"将会对我国的生态修复产生积极而深远的影响。 展开更多
关键词 “师自然生态修复 废弃地 煤矸石
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Dynamic Changes of Land Ecological Carrying Capacity Based on the Ecological Footprint——By the Case Study of Chengdu City 被引量:4
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作者 彭文甫 钟小兰 +1 位作者 黎秋阳 李琴 《Agricultural Science & Technology》 CAS 2012年第9期1986-1990,共5页
Chengdu City is in the period of rapid urbanization and industrialization, and the disturbance derived from human activities on environment is increasing remarkablely in recent 20 years. The pressure on environment, e... Chengdu City is in the period of rapid urbanization and industrialization, and the disturbance derived from human activities on environment is increasing remarkablely in recent 20 years. The pressure on environment, economy and population is also increasing and land use in Chengdu has changed enormously. As struc- ture and function of land ecological system change obviously, sustainable development of land productivity has been an important goal and strategic task from now on, and it is necessary to systematically research land ecological carrying capacity based on ecological footprint. The ecological footprint of Chengdu City in the past ten years was calculated and analyzed from the spatial and temporal aspects according to statistical data from 1998 to 2008, as per ecological footprint method, ecological carrying capacity and the GIS spatial analysis method, and regression analysis method. The ecological footprint and ecological carrying capacity values from 2009 to 2019 in Chengdu City were predicted through calculation results in the past ten years. The results show that the ecological footprint and ecological deficit of land use from 1998 to 2008 increased in Chengdu City. The ecological deficit of land use within the city center was in high levels in the past ten years, and the ecological footprint kept raising, especially in areas, such as Shuangliu, Chongzhou, Qingyang among 9 city areas, 4 counties and 6 districts in Chengdu City. There is fanlike distribution of ecological deficit of land use. Analysis shows that the social and natural ecological system is uneven distribution, which is not in sustainable de- velopment situation. The results of the study show that the economic, social and natural ecological system in Chengdu City is not sustainable, and the ecological foot- print is uneven distribution. The analysis of the dynamic change of land ecological carrying capacity in Chengdu City is very important for city government in the pro- cess of the vigorous development in new Tianfu Xinqu, and redevelopment in the northern part of this city. 展开更多
关键词 Ecological footprint Ecological carrying capacity Chengdu City Sustain-able development
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On the Natural Ecological Law of Taoism
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作者 Lu Zheng 《学术界》 CSSCI 北大核心 2015年第4期313-317,共5页
The Taoist philosophy on ecological ethics focuses on the independence of the principle that "Tao keeps to nature"and the modern environm ent law; and the integration of the principle that"Tao derives f... The Taoist philosophy on ecological ethics focuses on the independence of the principle that "Tao keeps to nature"and the modern environm ent law; and the integration of the principle that"Tao derives from nature"and the modern law of natural resources show case the Taoist natural philosophy and the ecological ethic principles. Based on the idea of the integration of society and nature and the ecological ethic interaction,this paper discusses the hot points of the present ecological ethic study,attem pting to find the breakthrough of the Taoist philosophy on nature and the value of Taoist philosophy for the ecological cultural renaissance and the peaceful rise of the Chinese nation. 展开更多
关键词 自然生态法 道家哲学 调制解调器 生态伦理 自然资源 伦理原则 自然哲学 文艺复兴
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发展无公害水产品的养殖类型和模式 被引量:2
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作者 赵明森 《科学养鱼》 2003年第4期6-7,共2页
关键词 发展 无公害水产品 养殖类型 养殖模式 自然生态无公害养殖 人工生态无公害养殖
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Evaluation on Tourism Ecological Security in Nature Heritage Sites——Case of Kanas Nature Reserve of Xinjiang,China 被引量:13
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作者 LIU Xuling YANG Zhaoping +1 位作者 DI Feng CHEN Xuegang 《Chinese Geographical Science》 SCIE CSCD 2009年第3期265-273,共9页
The nature heritages are the precious legacy of nature with outstanding scientific and aesthetic value. They are quite different from other common ecotourism areas, because of its original and unique system, sensitive... The nature heritages are the precious legacy of nature with outstanding scientific and aesthetic value. They are quite different from other common ecotourism areas, because of its original and unique system, sensitive and vulnerable landscape, and peripheral cultural features. Therefore, the tourism development in the nature heritage sites should be on the premise of ecological security. The evaluation index system of tourism ecological security in nature heritage sites was constructed in this article by AHP and Delphi methods, including nature ecological security, landscape visual security and local culture ecological security, and the security thresholds of indices were also established. In the indices' weights of the evaluation model, the nature ecological security ranked the highest, followed by tourist landscape visual security and culture ecological security, which reflected the influence degree of the limited factor to tourism ecological security. Then, this paper carried out an empirical study of Kanas of Xinjiang Uygur Autonomous Region, China, which has the potential to be the World Nature Heritage. On the basis of the data attained from survey and observation on the spot, as well as questionnaire answered by tourists and local communities, the ecological security status in Kanas was evaluated. The result showed that the status of Kanas tourism ecological security was better, but there had some limiting factors. Lastly, effective measures were put forward to ensure its ecological security. 展开更多
关键词 nature heritage TOURISM ecological security nature ecological security landscape visual security local culture ecological security KANAS
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Research Progress in Agricultural Vulnerability to Climate Change
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作者 Shengcai Tao Yinlong Xu +2 位作者 Ke Liu Jie Pan Shiwei Gou 《Advances in Climate Change Research》 SCIE 2011年第4期203-210,共8页
With the deepening of climate change research, more attention has been paid to vulnerability to climate change. Compared with water resources, forests and other natural ecosystems, agriculture is more vulnerable to cl... With the deepening of climate change research, more attention has been paid to vulnerability to climate change. Compared with water resources, forests and other natural ecosystems, agriculture is more vulnerable to climate change, thereby scientifically assessing agricultural vulnerability to climate change is of great significance to the formulation of rational and effective adaptation strategies. In this paper, the authors give a comprehensive review of the research from the perspective of the definition of climate change vulnerability and agricultural vulnerability to climate change, research topics, and evaluation methodologies. Existing problems in current research, including scenario application, methods, and uncertainties, are analyzed, and meanwhile, a vision of the direction for future research in assessment of agricultural vulnerability is also presented. 展开更多
关键词 climate change VULNERABILITY AGRICULTURE
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Winners and losers among tree species in Xishuangbanna: which traits are most important? 被引量:1
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作者 赵美玲 潘勃 +1 位作者 谭运洪 Richard T.Corlett 《Science Bulletin》 SCIE EI CAS CSCD 2015年第10期916-924,I0007,共10页
Massive human interference in natural ecosystems is resulting in a few "winners" and many "losers". However, the drivers of this winner-loser replacement pattern remain poorly understood. The aim of the study repo... Massive human interference in natural ecosystems is resulting in a few "winners" and many "losers". However, the drivers of this winner-loser replacement pattern remain poorly understood. The aim of the study reported here was to identify winners among the tree flora of Xishuangbanna and compare their functional traits, specific leaf area (SLA), wood density (WD), seed mass (SM) and maximum height (MH) with previously identified losers (i.e., endangered species). Fifteen native tree species were identified as winners from expert opinion, plot-based surveys of secondary forests and plotless surveys along roads. Twelve endangered tree species for which trait information could be obtained were used for comparison. Traits were compared with a Wilcoxon rank-sum test. Winners had significantly higher SLA, but lower WD. SM and MH did not differ significantly between groups. When the effects of phylogeny were removed by using phylogenetic generalized least squares, the difference in SLA became marginally insignificant. Principal component analysis resulted in two overlapping groups, showing that the selected traits were insufficient to distinguish winners and losers. Our results suggest that the "few winners, many losers" paradigm applies to trees in Xishuangbanna, with15 species accounting for most trees in the disturbed habitats sampled. 展开更多
关键词 Human disturbance - Functional traits Phylogeny Conservation status Tropical forests
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