發(fā)布時間：2018-04-25 21:40

  本文選題：植被完整性指數(shù) + 健康評價　； 參考：《生態(tài)學(xué)報》2017年15期

【摘要】：基于鄱陽湖濕地30個采樣點的植被調(diào)查數(shù)據(jù),利用植被完整性指數(shù)法(V-IBI)評價鄱陽湖濕地生態(tài)健康狀況。通過分布范圍分析、判別能力分析和相關(guān)性分析,從35個候選生物參數(shù)中篩選出6個核心參數(shù),利用比值法對核心參數(shù)賦值并累加求得各采樣點V-IBI分值,以所有采樣點95%分位數(shù)值為最佳期望值建立評價標(biāo)準(zhǔn)劃分健康等級。結(jié)果顯示:鄱陽湖濕地生態(tài)健康狀況總體較好,30個采樣點中6個為非常健康(V-IBI≥5.01),7個為健康(4.38≤V-IBI5.01),8個為一般(3.74≤V-IBI4.38),7個為差(3.10≤V-IBI3.74),2個為極差(V-IBI3.10),呈現(xiàn)出西部優(yōu)于東部,北部優(yōu)于南部的空間差異。V-IBI與景觀發(fā)展強度指數(shù)(LDI)和棲息地環(huán)境質(zhì)量評價指數(shù)(QHEI)呈顯著相關(guān)性,表明V-IBI方法對鄱陽湖濕地生態(tài)健康狀況評價結(jié)果合理有效,可作為鄱陽湖濕地生態(tài)監(jiān)測的重要手段。
[Abstract]:Based on the vegetation survey data of 30 sampling sites in Poyang Lake wetland, the ecological health status of Poyang Lake wetland was evaluated by vegetation integrity index method (V-IBI). By analyzing the distribution range, discriminant ability and correlation, 6 core parameters were selected from 35 candidate biological parameters, and the V-IBI scores of each sampling point were obtained by the ratio method. Use 95 quartile of all sampling points as the best expected value to establish evaluation criteria for health grading. The results showed that the ecological health status of the wetland in Poyang Lake was good, 6 of the 30 sampling sites were very healthy, 7 were healthy, 4.38 鈮，

本文編號：1803088