| Abstract： |
Nitrogen (N) deposition has continually increased since the industrial revolution and its rate varies widely around the world. The dynamic of soil nitrification under N enrichment affects nitrous oxide (N2O) emissions and nitrate (NO4-) leaching which are003 to 2016, and analyzes the influencing factors of UICE using the Tobit model. The research draws the following conclusions: (1) China's UICE improved from 2003 to 2016, and the distribution showed a spatial pattern decreasing from the east, central, west, and northeast regions. (2) The UICE, by region, was at an initial low stable level in 2003 and was in the process of moving towards a highly-efficient stable state up until 2016. The differences between regions have been the main aspect which affects the overall variation in UICE in China. (3) There is a logistic curve relationship between the economic development level and UICE. (4) Nationally, the factors that are significantly and positively correlated with UICE are: industrial agglomeration, local fiscal decentralisation, level of economic development, technological progress, industrial enterprises' average size, and industrial diversification. Factors that are significantly negatively correlated with UICE are the level of industrialization, the share of output value of state-owned enterprises in total output value, industrial openness, and environmental regulation. The factors infl᠀㸗ᜀ㸐ࣨῑ←ဏ dif᐀㸓취ᩏ泐ਓnding on the stage o
ഀ㸚擰점 㸄ᬠ㛐လion.ࠀ㸇܀㸀脨 |
