Taking Jiangshan City in Zhejiang Province for example,this article uses the binary logit choice model based on the field survey data,to study the factors influ
The objective of this study was to investigate the effect of long-term grazing sheep in cotton stubble on variation of biochemistry components and free gossypol
The mathematical model is often used for fitting the trend of changes in cultivated land resources in the land use planning,but the fitting effect is different
Popularization of network technology and development of online political participation expand approaches of young migrant workers participating in political aff