Liu Peng, Cui Yaoping, Cui Yang, et al. Comprehensive Value of Cultivated Land and Its Spatio-temporal Changes in North China Plain During 2000—2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(5): 275-282.
DOI:
Liu Peng, Cui Yaoping, Cui Yang, et al. Comprehensive Value of Cultivated Land and Its Spatio-temporal Changes in North China Plain During 2000—2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(5): 275-282. DOI: 10.13961/j.cnki.stbctb.2022.05.034.
Comprehensive Value of Cultivated Land and Its Spatio-temporal Changes in North China Plain During 2000—2020
[Objective] The comprehensive value of cultivated land in the North China Plain were estimated
and the value differences and change trends were analyzed
in order to provide a scientific basis for the protection of cultivated land in China
and promote the formation of a new pattern of “multiple integrated” cultivated land protection. [Methods] Based on the actual function of cultivated land and the impacts of artificial cultivation
the value of cultivated land was divided into positive values (economic value
social value
and ecological value) and negative values (environmental impacts of pesticides and chemical fertilizers). The comprehensive value of cultivated land in the North China Plain in 2000
2010
and 2020 was calculated by the income reduction method
the value substitution method
and the equivalent factor method. [Results] The values of cultivated land in the North China Plain in 2000
2010
and 2020 were 5.01×1012
8.45×1012
and 6.43×1012 yuan
respectively. The proportion of the economic value of cultivated land showed a downward trend
and the positive value was greater than the negative value during the study period. Moreover
the distribution of the value among provinces was unbalanced
and was greatly affected by cultivated land area
farming methods
and agricultural product prices. The value of cultivated land in Shandong Povince has always been more prominent
while the value of cultivated land in He’nan Province has fluctuated greatly. The negative value of cultivated land per unit area in each province showed an upward trend. [Conclusion] In 2000
2010
and 2020
relative to the positive value in the North China Plain
the proportion of economic value showed a downward trend
and the importance of the social value and the ecological value of cultivated land gradually became prominent. The negative value per unit of cultivated land in each province showed large regional differences
and the negative value showed an upward trend
especially in He’nan Province. The negative impacts of agricultural film and chemical fertilizer on cultivated land have not been effectively controlled