Quantifying the Ecosystem Services of Soda Saline-Alkali Grasslands in Western Jilin Province, NE China.

Assessment of Soil Conservation Services The total amount of soil conservation in the study area was 84.68 million Mg, 49.12 million Mg, 53.72 million Mg and 54.86 million Mg in 1990, 2000, 2010 and 2018, respectively; this is indicative of a decreasing trend from 1990 to 2010, and an increasing trend from 2010 to 2018 ( Figure 5 ).

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As shown in Figure 4 , from 1990 to 2018, the study area was dominated by middle- and low- value carbon storage areas, wheras the distribution of high value carbon storage areas showed a trend from local concentration to fragmentation.

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From 2010 to 2018, the contribution rate of conversion-in for medium-cover grassland exceeded the contribution rate of conversion-out, but this type of grassland still showed a decreasing trend.

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