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博斯腾湖小湖区湿地生态需水量阈值研究 被引量:4
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作者 刘英 钟瑞森 +4 位作者 段永超 程勇 姜立新 李江宏 刘铁 《干旱区地理》 CSCD 北大核心 2021年第6期1525-1533,共9页
湿地生态需水量阈值是其生态系统发生质变的临界条件,一旦某阈值被超越,系统的某些物质平衡关系、功能、健康就会受到影响,而月尺度的湿地生态需水量阈值研究有助于水资源优化配置。针对博斯腾湖小湖区芦苇沼泽镶嵌交错明水塘道的景观结... 湿地生态需水量阈值是其生态系统发生质变的临界条件,一旦某阈值被超越,系统的某些物质平衡关系、功能、健康就会受到影响,而月尺度的湿地生态需水量阈值研究有助于水资源优化配置。针对博斯腾湖小湖区芦苇沼泽镶嵌交错明水塘道的景观结构,结合遥感数据同步获取大范围数据的优势,利用长时间序列的水面面积频率分析,确定月尺度最小、中等和理想状态的小湖区湿地明水区面积;采用蒸发皿观测值计算法,核算小湖区湿地的月尺度最小、中等和理想生态耗水量。结果表明:小湖区湿地全年月平均最小、中等和理想的生态水面面积为14.47 km^(2)、21.56 km^(2)、26.75 km^(2);小湖区湿地生长季3—9月最小生态需水量为0.22×10^(8)m^(3)、0.35×10^(8)m^(3)、0.44×10^(8)m^(3)、0.51×10^(8)m^(3)、0.39×10^(8)m^(3)、0.41×10^(8)m^(3)、0.28×10^(8)m^(3),其中6月最大,3月最小,小湖区湿地年最小生态需水量约为3.02×10^(8)m^(3);如若同时满足小湖区湿地生态目标芦苇生长所需动态水位,3—9月最小生态需水量为0.40×10^(8)m^(3)、0.52×10^(8)m^(3)、0.79×10^(8)m^(3)、0.86×10^(8)m^(3)、2.31×10^(8)m^(3)、0.41×10^(8)m^(3)、0.28×10^(8)m^(3),其中7月最大,9月最小,小湖区湿地年最小生态需水量约为5.99×10^(8)m^(3)。本研究计算结果可用于小湖区湿地年、月尺度来水分配及出水调控,有利于提高区域水资源利用效率,确保小湖生态可持续发展。 展开更多
关键词 生态需水量 阈值 频率分析 博斯腾湖区湿地
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1976-2011年博斯腾湖小湖区湿地生态系统服务价值变化分析 被引量:15
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作者 祖皮艳木.买买提 赛迪古丽.哈西木 +1 位作者 玉米提.哈力克 肉孜.阿吉 《水土保持研究》 CSCD 北大核心 2016年第3期328-332,337,共6页
以1976年、1990年、2002年和2011年4期的遥感影像资料为基础,结合野外实地调查及其他相关资料,研究了1976—2011年博斯腾湖小湖区湿地面积和生态系统服务价值变化及其影响因素。结果表明:(1)近40年间小湖区湿地面积变化呈波动性趋势。其... 以1976年、1990年、2002年和2011年4期的遥感影像资料为基础,结合野外实地调查及其他相关资料,研究了1976—2011年博斯腾湖小湖区湿地面积和生态系统服务价值变化及其影响因素。结果表明:(1)近40年间小湖区湿地面积变化呈波动性趋势。其中1976年湿地面积最大为3 813.12hm^2;2002年和2011年湿地面积分别减少为3 138.12,2 285.53hm^2。(2)在整个研究时段博斯腾湖小湖区湿地生态系统服务价值的变化整体上呈减少趋势:其中在1976—1990年,年平均减少2.67%;而在1990—2002年,年平均增长2.63%;2002年以后不断减少,减少速度比前15年明显加快。从研究区各生态功能服务价值对总的生态系统服务功能价值的贡献来看,废弃物处理、水涵养和气候调节功能服务价值的贡献率较大,且在整个研究时段呈增加的趋势。在研究期间,博斯腾湖小湖区湿地面积和生态系统服务价值的变化与流域自然和人为因素密切相关,应重视近年来人类活动的负面影响,对绿洲经济活动进行合理规划和控制。 展开更多
关键词 湿地面积 生态服务价值变化 湖区湿地 博斯腾流域
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洞庭湖湿地保护区景观格局变化及原因分析 被引量:21
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作者 石军南 徐永新 刘清华 《中南林业科技大学学报》 CAS CSCD 北大核心 2010年第6期18-26,共9页
运用景观格局指数和动态模型,对从多期遥感影像提取的洞庭湖湿地保护区景观信息进行景观格局特征和变化的定量分析。结果表明:洞庭湖湿地保护区自然湿地和人工湿地的面积分别呈减少和增加趋势;湿地景观形态趋于复杂化,湿地景观的景观多... 运用景观格局指数和动态模型,对从多期遥感影像提取的洞庭湖湿地保护区景观信息进行景观格局特征和变化的定量分析。结果表明:洞庭湖湿地保护区自然湿地和人工湿地的面积分别呈减少和增加趋势;湿地景观形态趋于复杂化,湿地景观的景观多样性逐渐上升,景观异质性逐渐增大;景观整体破碎度逐渐上升。分析认为:气候变化、泥沙淤积、围湖垦殖、退田还湖、人工植芦和滩地造林是影响景观格局变化主要自然因素和人为因素。 展开更多
关键词 湖区湿地 湿地保护 湿地景观 景观格局指数 洞庭
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鄱阳湖可采砂区确定的意义及原则 被引量:3
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作者 程华 《江西水利科技》 2008年第1期11-13,19,共4页
阐述了鄱阳湖湖砂资源丰富的特性和当前采砂的现状,并论述了鄱阳湖可采砂区确定的必要性和划定原则。
关键词 鄱阳 原则 采砂 泥沙量 泥沙量 沙开采 沙资源 航道 湖区湿地 保护
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Establishment and Utilization Plan of Shangshe Lake Wetland Nature Reserve
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作者 覃章念 阮国宇 +1 位作者 冷艳芝 胡先祥 《Agricultural Science & Technology》 CAS 2013年第6期895-898,共4页
According to biodiversity of Shangshe Wetland Nature Reserve, the protection region from interior to exterior can be divided into a core zone which is to protect succession and reproduction in local environment, a buf... According to biodiversity of Shangshe Wetland Nature Reserve, the protection region from interior to exterior can be divided into a core zone which is to protect succession and reproduction in local environment, a buffer zone which is to control ill effects on the core zone, and a test zone which is to protect relevant facilities. In addition, utilization and development principles and measures of the protection region were discussed. 展开更多
关键词 WETLAND Shangshe Lake Nature Reserve PLANNING UTILIZATION
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Bird Species Diversity and Spatio-temporal Variation in the Sihong Hongze Lake Wetland National Nature Reserve in Eastern China
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作者 HU Huali XIAO Lihui +3 位作者 ZHANG Manyu WANG Silu CHEN Taiyu LU Changhu 《Journal of Resources and Ecology》 CSCD 2024年第4期826-837,共12页
As an important hub on the East Asian-Australian Flyway(EAAF),Hongze Lake is an important migratory stopover and wintering site for hundreds of thousands of birds.However,research on bird community diversity in this a... As an important hub on the East Asian-Australian Flyway(EAAF),Hongze Lake is an important migratory stopover and wintering site for hundreds of thousands of birds.However,research on bird community diversity in this area is still lacking.We conducted a bird survey from July 2020 to June 2021 using the line transect method on the terrestrial habitat,as well as the fixed-point method in the lake wetland at the Sihong Hongze Lake Wetland National Nature Reserve located in northwestern Hongze Lake,and analyzed the temporal-spatial variation in the bird community.The results showed that a total of 170432 detections of 215 bird species belonging to 18 orders and 55 families were recorded.In terms of species composition,the proportion of terrestrial birds was relatively high,followed by waterfowl richness,with high numbers of Anatidae species and shorebirds.For bird species abundance,waterfowl had the highest abundance of common coot(Fulica atra),belonging to the Rallidae family,followed by Anatidae and Ardeidae species.The abundance of shorebirds was extremely low,and that of non-waterfowl was also low.In terms of temporal patterns,the number of bird species and richness index were higher in spring and autumn but lower in winter and summer.The bird abundance was the highest in winter,and the remaining three seasons were similar in terms of bird abundance.The diversity index and evenness index were higher in spring,summer and autumn,and lowest in winter.For the spatial pattern,the open water in the western part of the reserve included the most densely distributed areas for birds,and the number of bird species and their abundance were both the highest in that part.There were significant differences in the bird community structures among the four habitats.The species number and richness index of birds in the reed habitat were the highest,and the bird abundance was also high,but the diversity index and evenness index were low.Although the bird abundance in the lake habitat was much higher than in the other habitats,the diversity index,evenness index and richness index were the lowest.The numbers of bird species and individuals in tourist attraction land and farmland were low,but the diversity index,evenness index and richness index were high.Our results reveal the spatial and temporal patterns of bird species diversity and abundance in Sihong Hongze Lake Wetland National Nature Reserve,and reflect the effects of different habitat types on bird diversity. 展开更多
关键词 bird diversity seasonal variation spatial distribution Sihong Hongze Lake Wetland National Nature Reserve
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