本文選題：城市綠地生態(tài)網(wǎng)絡(luò) + 連接度��； 參考：《中南林業(yè)科技大學(xué)》2017年碩士論文

【摘要】：當(dāng)前城市生態(tài)格局的生境破碎化越來越嚴(yán)重,城市發(fā)展對景觀格局、原生物種的分割及干擾日趨嚴(yán)重,因此針對特定物種利用景觀連接度對城市生態(tài)網(wǎng)絡(luò)進(jìn)行分析及優(yōu)化的意義十分顯著:其對解決景觀空間類型破碎化和豐富景觀空間異質(zhì)性提供了理論基礎(chǔ),對優(yōu)化景觀空間格局與了解研究區(qū)域生態(tài)現(xiàn)狀提供了技術(shù)指導(dǎo)和參考依據(jù),對整個景觀生態(tài)學(xué)進(jìn)一步深化指導(dǎo)城市建設(shè)具有重要的現(xiàn)實意義。本文首先通過對國內(nèi)外相關(guān)文獻(xiàn)及案例進(jìn)行研讀,對相關(guān)理論基礎(chǔ)、城市綠地生態(tài)網(wǎng)絡(luò)的含義與構(gòu)建的方法進(jìn)行分析與總結(jié),對當(dāng)前城市綠地生態(tài)網(wǎng)絡(luò)的現(xiàn)狀、構(gòu)建方法有了一定的理論基礎(chǔ),為后文的實證研究提供堅實的理論依據(jù)。本文的核心內(nèi)容為基于林鳥連接度的現(xiàn)狀對寧鄉(xiāng)縣中心城區(qū)綠地生態(tài)網(wǎng)絡(luò)進(jìn)行分析及優(yōu)化。本研究基于城市綠地生態(tài)網(wǎng)絡(luò)的相關(guān)理論,以長沙市寧鄉(xiāng)縣中心城區(qū)作為研究區(qū)域,以灰椋鳥作為研究區(qū)域中林鳥的指示物種,采用景觀組分指數(shù)NC、綜合連接度指數(shù)ⅡC、連接度概率指數(shù)pC以及重要性指數(shù)dI對研究區(qū)域的現(xiàn)有綠地生態(tài)網(wǎng)絡(luò)的景觀連接度進(jìn)行分析,并選取了 11個與15個綠地斑塊分別作為核心綠地斑塊和重要綠地斑塊,11條與16條連線分別作為核心飛行廊道和重要飛行廊道;再利用累積阻力模型MCR對綠地斑塊及斑塊間的連線進(jìn)行分析,并識別不利于灰椋鳥進(jìn)行生態(tài)擴(kuò)散過程的綠地斑塊及飛行廊道,發(fā)現(xiàn)其中核心綠地斑塊中綠地斑塊31受周邊土地覆蓋類型影響及本身的面積大小呈受中度干擾,綠地斑塊43受居民點(diǎn)之人為干擾呈受中度干擾,核心飛行廊道中廊道50-42、28-3處于中度阻礙的狀態(tài)。之后根據(jù)相關(guān)理論基礎(chǔ)及原則,針對研究區(qū)域中存在的林鳥連接度問題進(jìn)行生態(tài)保護(hù)及優(yōu)化途徑、新增“踏腳石”途徑以及人文繁榮途徑三個途徑進(jìn)行優(yōu)化。
[Abstract]:At present, the habitat fragmentation of urban ecological pattern is becoming more and more serious, and urban development is becoming more and more serious to landscape pattern, division and interference of native species. Therefore, it is of great significance to analyze and optimize the urban ecological network by using landscape connectivity for specific species: it provides a theoretical basis for solving the fragmentation of landscape spatial types and enriching the spatial heterogeneity of landscape. It provides the technical guidance and reference basis for optimizing the landscape spatial pattern and understanding the ecological status of the study area, and has important practical significance for the whole landscape ecology to further deepen and guide the urban construction. First of all, this paper analyzes and summarizes the relevant theoretical basis, the meaning and construction methods of urban green space ecological network, and analyzes the current situation of urban green space ecological network through the study of relevant literature and cases at home and abroad. The construction method has a certain theoretical basis and provides a solid theoretical basis for the later empirical research. The core content of this paper is the analysis and optimization of green space ecological network in the central urban area of Ningxiang county based on the current situation of forest bird connectivity. Based on the theory of urban green space ecological network, this study took the central urban area of Ningxiang county of Changsha as the research area, and the grey starling as the indicator species of the forest birds in the study area. Landscape component index (NC), connectivity index (鈪，

本文編號：1949962