摘 要:本文分析和比較了現有房地產泡沫的度量和檢驗方法,結果發現,大多數方法只能檢驗泡沫是否存在,而無法測度其大小。在布蘭查德和沃森的股票理性泡沫模型(R-B模型)的基礎上,通過修改測度因子,提出了房地產泡沫的測度模型,并進一步描述了該測度模型中所需數據在我國房地產市場環境下的獲取方法。接著利用模型對我國四個代表性城市住宅房產進行了實證研究,結果表明,我國房地產市場總體上已經出現一定泡沫,而且,有些地區房地產泡沫已經達到較高水平。
關鍵詞:房地產;泡沫;測度;R-B模型
中圖分類號:F293.3 文獻標識碼:A 文章編號:1003-5192(2008)04-0006-05
Empirical Study of Real Estate Bubbles Measuring Based on R-B Model
SUN Wei, HU Wen-xiu
(Business Administration School, Xi’an University of Technology, Xi’an 710054, China)
Abstract:This paper analyses and compares the existing measuring and testing methods of real estate bubbles, and finds that most of them only can test whether bubbles exist or not but can not measure the size of it. So, this paper puts forward the measuring model of real estate bubbles based on the stock rational bubbles model(R-B model) that deduced by Blanchard and Wosoton, while adjusting measuring factors. Furthermore it introduces the acquiring way of the needing datum in measuring model under the market circumstances in China. Then we used the model to make empirical study into several representative cities’ real estate industry. The conclusion is that there are certain bubbles in Chinese real estate market as a whole while the real estate bubbles have reach to higher level in some region.
Key words:real estate; bubbles; measurement; R-B model
1 引言
隨著房地產市場持續升溫,住房空置率不斷提高,引發了對房地產泡沫有無和大小的激烈爭論。有些學者認為我國當前的房地產業已經出現了泡沫,而且還很嚴重;同時也有很多學者反駁這種觀點,認為中國房地產業發展前景良好,將持續走高,只是有一些結構性過熱,并沒有產生過度膨脹,也不會影響中國經濟。因此要正確分析房地產泡沫是否存在及其大小,迫切需要有一種切實可行且能夠被廣泛接受的泡沫測度方法,遺憾的是目前關于房地產泡沫的測度方法學術界并沒有形成統一的定論,仁者見仁,智者見智。本文在美國著名經濟學家布蘭查德和沃森的股票理性泡沫模型(Rational Bubbles Model,R-B模型)的基礎上,提出了具有量度大小功能的房地產泡沫測度模型,并用以對我國部分地區的房地產泡沫進行測度。……