【摘要】：景觀連接度被認(rèn)為是影響諸多生態(tài)過程的一個(gè)重要因素.基于最小累積阻力模型的最小成本路徑識別方法可以有效識別異質(zhì)性景觀中的功能連接,已被廣泛應(yīng)用到景觀的功能連接評價(jià)與生態(tài)廊道模擬的研究中.基于電路理論的連接度模型用電阻代替了圖論中的邊、用電阻距離代替成本距離,來衡量異質(zhì)性景觀的功能連接.本文以SIMMAP 2.0軟件生成的模擬景觀為對象,借助于Linkage Mapper工具和Circuitscape軟件,探討如何將最小累積阻力模型與基于電路理論的連接度模型相結(jié)合來識別生態(tài)廊道及其景觀要素的相對重要性.結(jié)果表明:兩種模型在應(yīng)用中各有優(yōu)勢,互為補(bǔ)充.最小成本路徑方法可以有效識別棲息地之間的最小成本廊道,基于電路理論的連接度模型通過電流密度的計(jì)算可以有效識別對景觀連接性有重要影響的景觀要素和"夾點(diǎn)"地區(qū),并且"夾點(diǎn)"的位置不受廊道寬度的影響,在廊道重要性識別研究中具有明顯優(yōu)勢.該方法可為區(qū)域生態(tài)保護(hù)規(guī)劃和生態(tài)廊道設(shè)計(jì)提供科學(xué)依據(jù).
[Abstract]:Landscape connectivity is considered to be an important factor affecting many ecological processes. The minimum cost path identification method based on the minimum cumulative resistance model can effectively identify the functional connections in heterogeneous landscape, and has been widely used in the evaluation of the functional connections of the landscape and the study of ecological corridor simulation. The connectivity model based on circuit theory uses resistor instead of edge in graph theory and resistor distance instead of cost distance to measure the functional connection of heterogeneous landscape. This paper takes the simulated landscape generated by SIMMAP 2.0 software as the object, with the help of Linkage Mapper tools and Circuitscape software. This paper discusses how to identify the relative importance of ecological corridor and its landscape elements by combining the minimum cumulative resistance model with the connectivity model based on circuit theory. The results show that the two models have advantages and complement each other in application. The minimum cost path method can effectively identify the minimum cost corridors between habitats. The connectivity model based on circuit theory can effectively identify the landscape elements and "pinch points" which have an important impact on landscape connectivity through the calculation of current density, and the location of the "pinch" is not affected by the width of the corridor. It has obvious advantages in the research of corridor importance recognition. The method can provide scientific basis for regional ecological protection planning and ecological corridor design.
【作者單位】： 河南大學(xué)環(huán)境與規(guī)劃學(xué)院;河南科技學(xué)院園藝園林學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41171439)資助~~
【分類號】：TU985.2
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本文編號：2145418