CAJ | 학술논문

以1990年和2005年遥感影像为基本信息源,在GIS技术支持下,在对辽河三角洲湿地景观格局分析的基础上,采用破碎度、分离度、优势度等景观格局指数和景观类型脆弱度为评价指标研究辽河三角洲湿地景观生态安全.20世纪90年代以来大规模的资源开发,加剧了辽河三角洲湿地景观的破碎化程度,使景观优势度增高,多样性下降.从1990-2005年,研究区主要湿地景观类型水稻田、苇田、滩涂的干扰程度有所增加,生态安全度均有所下降,表明人类对自然湿地生态系统的干扰越来越明显.总体来说,15年来研究区整体景观生态安全度呈现下降趋势.以往湿地生态安全的研究主要集中在环境脆弱性和保护策略方面,研究层次着重在生态系统层面,而从景观格局角度对湿地景观生态安全的研究涉及较少,文章涉及的是景观生态学可持续发展研究的一个新领域,所提出的内容实质上是景观生态安全定量表征的方法探讨.应用景观生态学方法研究生态安全,揭示景观结构与功能关系并进一步分析区域生态环境的变化趋势及其内在因素,不但为辽河三角洲湿地及其生物多样性的保护和资源开发提供了科学依据,而且丰富和发展了我国生态安全研究的理论与方法.
이1990년화2005년요감영상위기본신식원,재GIS기술지지하,재대료하삼각주습지경관격국분석적기출상,채용파쇄도、분리도、우세도등경관격국지수화경관류형취약도위평개지표연구료하삼각주습지경관생태안전.20세기90년대이래대규모적자원개발,가극료료하삼각주습지경관적파쇄화정도,사경관우세도증고,다양성하강.종1990-2005년,연구구주요습지경관류형수도전、위전、탄도적간우정도유소증가,생태안전도균유소하강,표명인류대자연습지생태계통적간우월래월명현.총체래설,15년래연구구정체경관생태안전도정현하강추세.이왕습지생태안전적연구주요집중재배경취약성화보호책략방면,연구층차착중재생태계통층면,이종경관격국각도대습지경관생태안전적연구섭급교소,문장섭급적시경관생태학가지속발전연구적일개신영역,소제출적내용실질상시경관생태안전정량표정적방법탐토.응용경관생태학방법연구생태안전,게시경관결구여공능관계병진일보분석구역생태배경적변화추세급기내재인소,불단위료하삼각주습지급기생물다양성적보호화자원개발제공료과학의거,이차봉부화발전료아국생태안전연구적이론여방법.
Based on the data of the basic information in 1990 and 2005 remote sensing, GIS and previous studies on landscape pat-tern of wetland in Liaohe River delta, the security of wetland in Lianhe River delta is studied by using the indexes on landscape pat-tern and of vulnerability of landscape types, such as, fragmentation, isolation and dominance. In the 19908, the increasing resources exploitation aggregates the fragmentation on Liaohe River delta, which increases the landscape dominance and decrease the diversity. From 1990 to 2005, the disturbance on main paddy field, weed field, beach increased while the landscape ecological security de-creased, which demonstrate that the disturbance from the human beings increase. On the whole, landscape security of whole research region has decreased for 15 years. The previous research on ecological security focused on the environment vulnerability and the protective methods about the ecosystem. While there is few researches relate to the wetland ecological security. It is a new field to study the sustainable development on landscape ecology. The essence of content on the study is to discuss method for quantitative landscape ecological security. By using the landscape ecology on the ecological security, the landscape structure, function, the change tendency and its inner factors are revealed, which provide the scientific evidence on the protection and natural resource ex-ploitation of wetland in Liaohe River delta, and developed and enriched the theories and methods of Chinese ecological security.