甘肃敦煌西湖国家级自然保护区作用及现存问题的分析   总被引：1，自引：0，他引：1  

袁海峰  庞晓燕  李永华 《湿地科学与管理》2009,5(1)

敦煌西湖国家级自然保护区湿地及植被是敦煌绿洲的生态屏障,通过对其作用及现存问题的分析,提出了相应的保护对策,以期为提高保护区资源的管理水平,充分发挥其生态、社会和经济效益,为我国西部生态环境建设提供支持。  相似文献   

江西铜钹山自然保护区贝类物种多样性     

欧阳珊  姜娇  林向阳  周少华  谢广龙  宋世超  林昌勇  汪文敏  邓谱涓  吴小平 《热带地理》2014,34(2):148-155

基于2012年7月至2013年8月调查的江西铜钹山自然保护区贝类资源,研究保护区内贝类的物种多样性,以及在不同生境类型下的分布规律和区系与动物地理组成,探索该地区内贝类物种组成和栖息环境之间的关系。通过定性与定量的方法共采得贝类42种及亚种,分别隶属于2纲4目16科28属。其中,淡水贝类15种,分别隶属于2纲3目7科10属;陆生贝类27种,分别隶属于1纲3目9科18属,其中有3种为江西的新记录：小柱倍唇螺（Diplommatina paxillus）、三重真卷螺（Euplecta trifilaris）和小石环肋螺（Plectotropis calculus）。淡水贝类优势种为放逸短沟蜷（Semisulcospira libertine）和小土蜗（Galba pervia）,陆生贝类优势种为扁恰里螺（Kaliella depressa）、弗氏巴蜗牛（Bradybaena fortunei）和灰尖巴蜗牛（Bradybaena ravida ravida）。贝类动物地理区系组成以东洋界为主,共22种,占总种数的52.38%。采用Margalef丰富度指数d_MA、Shannon-Wiener（1949）多样性指数H'、Pielou均匀度指数J_SW对在不同生境类型下的贝类多样性进行分析,结果表明：灌丛生境陆生贝类的丰富度指数和多样性指数均最高,针阔混交林生境的均匀度指数最高。根据Jaccard公式计算并比较铜钹山与邻近自然保护区陆生贝类物种相似性系数发现：铜钹山自然保护区陆生贝类物种较丰富;与阳际峰自然保护区陆生贝类物种相似系数较高,为23.33%,与湖南莽山自然保护区物种相似性系数较低,为6.45%,并对其相似性差异进行了原因分析。  相似文献   

Gramsci Lives!     

Michael Ekers  Alex Loftus 《Geoforum》2009,40(3):287-291

Antonio Gramsci’s writings provide a valuable conceptual and political sensibility for critical approaches to nature. In this editorial introduction to a theme issue on Gramscian Political Ecologies we establish the broad contours to such an approach, stressing Gramsci’s integral marxism and commitment to a transformative politics relevant to the contemporary moment. Subsequently, we provide an introduction to existing political ecological research inspired by Gramsci’s wide-ranging writings. In order to stimulate future research, we question Gramsci’s reflections on ’nature’ in order to examine the embyonic possibilities and limitations therein. Gramsci, we suggest, provides stimulating commentary on the differentiated unity of nature and society: in part, this anticipates recent arguments on this subject. Similarly, we reflect on how Gramsci’s conceptualization of hegemony relates to core issues within political ecology. Given the centrality of ’environmental issues’ in the contemporary moment, it is necessary to consider how social groups enrol natures and environments (both material and symbolic) in their struggles for hegemony. We conclude the editorial by introducing the articles included in the theme issue.  相似文献   

Conservation and development 2.0: Intensifications and disjunctures in the politics of online ‘do-good’ platforms     

《Geoforum》2017

An increasing amount of interactive ‘2.0’ crowdsourcing platforms raise awareness and funds for conservation and development projects worldwide. By enabling two-way online collaboration and communication, these ‘conservation and development 2.0’ platforms hoped to provide new impetus and popular legitimacy for conservation and development initiatives in the face of budget cuts and general criticism of the ‘formal’ aid sector after the financial crisis. This paper presents the case of the flagship ‘elephant corridor’ project on the Dutch pifworld.com platform to investigate whether and how the ‘2.0’ element has changed conservation and development in line with these expectations. The paper describes and analyses online and offline dynamics of the project and shows that while online excitement about the project remained high, the concomitant conservation and development promises and imaginations ill related to offline local realities. This rather ‘traditional’ conservation and development disjuncture, however, needs to be understood against the system peculiarities of the politics of online ‘do-good’ 2.0 platforms. The paper concludes that as these peculiarities are significantly intensifying and changing conservation and development dynamics, they do not elude familiar (1.0) disjunctures and might even obscure these further from sight.  相似文献   

Medicinal Plants Harvesting in Wolong National Nature Reserve     

TAN Hong  CHENG Yuehong  QIAO Maiju  YANG Panyan  HE Mingwu 《资源与生态学报(英文版)》2017,8(3):304-312

A combination of sample surveys and questionnaires were used to investigate the harvesting of wild medicinal plants (WMP) in Wolong National Nature Reserve (WNNR) from August 2014 to July 2015. These surveys showed that up to 20 families and 45 species of WMP were harvested in WNNR. Gastrodia elata, Paris polyphylla, Fritillaria thun-bergli, Rheum officinale, Rhodiola rosea, Saussurea medusa, Notopterygium root, Radix Ginseng, Buddha’s palm were harvested intensely. The harvesting, which occurred mainly in autumn and winter (from June to October) in the test area, buffer area and core area, was located mostly in the residential and crop production areas of Wolong Town and Gengda Town, and in the timberline, alpine meadows and scree areas of Dengshenggou Ravine and Balangshan Mountain (specifically in Dengshenggou, Tangfang, Tizigou Ravine, Weijiagou Ravine and Reshuihe River areas). Among all the harvesters, 58% came from inside the WNNR, and 42% came from outside the WNNR; 87% were male, and 13% were female; 6% were under the age of 18, 69% were 19-45 years old, 19% were 46-65 years old, 6% were over 66 years old. The main purpose of harvesting was commercial sale to increase household income. Based on the analysis and discussion of the results, comprehensive management measures were introduced to strengthen the awareness and efficacy of laws and regulations, integrate the enforcement of these laws, establish and strengthen inspections. Skills training and the domestication of the wild medicinal materials were used to encourage the surplus labor force to avoid excessive harvesting and move into other agricultural endeavors.  相似文献   

Born of geographical environment,coloring for regional context: Concept and progress of geo-architecture     

Fang Wang 《地理学报(英文版)》2017,27(5):631-640

In today’s world, where re-examination has been given to cultural globalization, the relationship between architectures and specific regions is one of many specific issues. At this time, the study of architecture from the perspective of geography has significant meaning for treasuring regional characteristics and protecting the essence of ethnic culture. The study of geo-architecture includes two aspects: the influence of geographical environment upon architecture and reflexively, architectural responses to geographical environment. In “Geo-Architecture and Landscape in China’s Geographic and Historic Context Series” (4 volumes), published by Springer Nature in 2016, the contents of “geo-architecture” has been interpreted from various angles as form, function, semantics and symbol. This book is the first to be entitled “Geo-Architecture”, which studies the relationship between geography and architecture from the perspective of geographical environment and historical context in China. The book’s research reveals the influences of different geographical scales, such as zone (macro), region (middle) and site (micro) scales, on architecture; it discusses dynamic and systematic thought, including such research elements as “Object-Subject-Time”, and it reflects views on pattern and process of cultural landscape. Research on geo-architecture aims to help construct the security pattern of the cultural landscape for the new requirements of a new era, which is used to optimize spacial structure, stimulate heritage conservation and renewal, respect the geographical environment, pay attention to historical culture and sustain emotional memory.  相似文献   

甘肃敦煌地区疏勒河尾闾区地下水化学特征及成因分析     

刘德玉  贾贵义  张伟  喻生波  魏玉涛 《地质论评》2022,68(1):181-194

疏勒河尾闾区是护卫敦煌绿洲及文化的生态安全屏障,但是对地下水化学的研究相对较少.本次研究在野外调查及采样测试的基础上,综合运用数理统计、Piper三线图、离子相关性分析、Gibbs图及离子比例系数等方法明确了疏勒河尾闾区的地下水化学特征,并对其成因进行了分析.结果表明:疏勒河尾闾区地下水水质总体呈弱碱性,具有高溶解性总...  相似文献   

扎龙国家级自然保护区景观格局变化研究   总被引：4，自引：0，他引：4  

周利军  张雪萍 《湿地科学》2010,8(1):74-78

以1989年6月、1999年9月的TM遥感影像和2006年6月CBERS(中巴资源卫星)影像为数据源,以Arc-GIS软件为数据分析平台,研究了扎龙国家级自然保护区的景观格局变化特征和景观组分转移。结果表明,扎龙国家级自然保护区景观以沼泽地为主,沼泽地是景观的基质,1989年、1999年和2006年沼泽地的面积分别为1279.3km2、1250.9km2和1238.4km2;该保护区景观破碎化程度加大,其景观格局由简单变为复杂;景观类型的转换以草地转变为耕地、沼泽地转变为耕地和沼泽地转变为盐碱地为主,由此导致该保护区沼泽地面积减少和生物多样性下降。  相似文献   

小五台山自然保护区苔藓植物研究   总被引：4，自引：0，他引：4  

李敏  赵建成  王立宝 《地理与地理信息科学》2004,20(2):109-112

根据对小五台山国家级自然保护区苔藓植物资源的实地调查和室内鉴定,该文分析了保护区内苔藓植物区系的基本组成,统计了科、属、种的数目及其优势科、属;讨论了苔藓植物的10种区系成分及其区系特征,其中北温带成分居主导地位,针对苔藓植物资源的现状,提出合理开发利用的建议。  相似文献   

南麂列岛国家海洋自然保护区微,小型藻类生态研究：Ⅰ.种类组成与生态特点     

朱根海  王旭 《海洋学研究》1998,16(2):1-21

本文对南麂列岛国家海洋自然保护区微、小型藻类的种类组成、生态类群、分布特点等进行了较详细的分析研究。经鉴定共有微、小型藻类４５９种,在海水和海洋底栖沉积物中发现的有２８３种;泥滩、沙滩、岩礁潮间带中发现的有２８１种;两者共同出现的有１０５种。其中,硅藻类占７１．２４％,蓝藻类占１３．９４％,甲藻类占１２．６４％,绿藻类和金藻类分别占１．５３％和０．６５％。这些种类大都为本区的新记录,为我国海洋微、小型藻类首次记录的有３０种。根据种类组成、分布特点和温度性质,划分为三个生态类群：广布性类群、暖水性类群、温带性类群。此外,根据生境或生活方式不同,划分为两个生态类群：海洋浮游藻类、海洋底栖藻类或附生藻类;根据盐度的不同,又可划分为：淡水藻类、半咸水藻类、海洋藻类;还可以根据藻类个体大小的不同,划分为两个生态类群：海洋微型藻类、海洋小型藻类。  相似文献