id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
esrj-44642	Liang, Wang; Zhengfu, Bian; Hongquan, Chen	Land ecological security assessment for Yancheng city based on catastrophe theory	2014	7	.pdf	application/pdf	4860	206	46	Using the catastrophe theory and pressure-state- response (PSR) model, the purpose of the research was to judge the degree of land ecological security in Yancheng city from 2002 to 2011 and determine the requirements to ensure the sustainable development of this region. The objective is to demonstrate the method and evaluate the degree of land ecological security in Yancheng city from 2002 to 2011 as a tool to determine the requirements to ensure sustainable development of this region.	cache/esrj-44642.pdf	txt/esrj-44642.txt