首先介紹了基于GIS的傳統(tǒng)的土地適宜性分析模型(TLSAM)，并指出它有兩個(gè)主要缺點(diǎn):一是同一級(jí)別內(nèi)的不同類別沒(méi)有顯示出評(píng)分的差別;二是不同級(jí)別的分界處評(píng)分差別過(guò)分拉大.然后采用了可信度(Certainty Degre)概念對(duì)其進(jìn)行了改進(jìn).研究表明，經(jīng)過(guò)改進(jìn)后的土地適宜性分析模型(ISAM)包含的信息更豐富、更準(zhǔn)確，能
為決策者和土地管理部門提供更多的選擇機(jī)會(huì).
關(guān)鍵詞:地理信息系統(tǒng)，綠地系統(tǒng)，土地適宜,信度

Abstract:This paper introduces the traditional land suitability analysis model (TLSAM)，which has two main disadvantages:one is that no diference is identified among the diferent subclasses within the same class; the other is that the diference between the two diferent classes is exaggerated around the division of scores. Then it wants to improve this traditional land suitability analysis model by using the idea of certainty degree(CD).Research showed that the improved land suitability analysis model (ILSAM) encompasses more enriched and precise information than the traditional one, thereby providing more options for the decision makers and land managers.
Key words:geographic information system (GIS);green space system; land suitability analysis model; credibilit