The Response of Grain Potential Productivity to Land Use Change: A Case Study in Western Jilin, China

Abstract

Abstract:The impact of land use change on grain potential productivity is one of the most important topics in the research of land use/cover change and its effects. Western Jilin, located on the edge of an ecotone in northern China, and its land use have changed dramatically in recent decades, with significant impact on grain potential productivity. This study evaluated the grain potential productivity in different conditions and analyzed the response to land use change based on land use data, meteorological data and statistical data by using the Global Agro-ecological Zone model. Results showed that (1) 36.6% to 24.7%. Therefore, increasing investment in agriculture, improving land quality and increasing the conversion rate of grain potential productivity to actual production would be a better choice for ensuring national food security and achieving sustainable land use.

Impact of Farmland Change on Soybean Production Potential in Recent 40 Years: A Case Study in Western Jilin, China

“…It can be seen from the spatial distribution of soybean production potential of Western Jilin in 2013 that the production potential of eastern area was higher than the other areas of Western Jilin. It was mainly because that the farmland density of the east was highest, and the topography, soil and climate conditions were more suitable for soybean production [ 42 ]. It may also be because that in west and south in Western Jilin, land salinization and desertification were serious, and the soil quality is poor [ 25 ], which was not conducive to the growth of soybean.…”

“…The region is transitional from black soil in temperate sub-humid areas to chestnut soil in a temperate sub-arid steppe and typical farming-pastoral ecotone. The topography of Western Jilin is sloped from east and west to the middle [ 2 , 25 ]. The total area is about 5.53 million ha.…”

“…Food is a specialized commodity and an important strategic reserve relating directly to a country’s well-being [ 1 , 2 ]. Food security is an important part of national security.…”

“…Soybean is one of the common crops in Western Jilin. Thus, its farmland change would directly have a significant impact on soybean production potential [ 2 ]. Therefore, the objective of this study is to use the Global Agro-Ecological Zones (GAEZ) model to estimate the soybean production potential based on farmland data from 1975, 2000 and 2013, soil data, Digital Elevation model (DEM) data, and meteorological data from the past 40 years, and analyze the impact of farmland change on soybean production potential in Western Jilin.…”

Changes of grain production potential in farming–pastoral ecotone: a case study in West Jilin, China

“…The influence of land use change on grain production potential was achieved primarily through the conversion between farmland and other land use types such as grassland, marshland, woodland and built-up land (Li et al 2015). In period 1, there were 232.4 thousand ha of other types of land use converted to cultivated land in West Jilin, resulting in an increase in total grain production potential of 1082.9 thousand tonnes.…”