Evaluation of Sustainable Development of an Agricultural Economy Based on the DPSIR Model

Table 7

Parameters and meaning.

Parameters	Meaning
	Is the systematic value that is not multiplied by the contribution margin
	Standardized data for the -th factor and indicator extracted by system
	Contribution of the th factor of system
	Is the total number of extracted factors for system
	The system value of the requested system, the sustainability index of each system layer
	The contribution of a principal component of system
	Reflecting the low level and strong capacity of sustainable development of Jiangsu’s agricultural economy
	Is the system value of system layer , i.e., the sustainability index of each system
	system layer weights on the target layer

Data from the “Jiangsu Statistical Yearbook” and the statistical information of enterprises, agricultural bureaus, show parks in each county (township and township) within Jiangsu.