Analysis of the spatial mismatch of grain production and farmland resources in China based on the potential crop rotation system

Spatial–Temporal Matching Characteristics between Agricultural Water and Land Resources in Ningxia, Northwest China

“…The spatial mismatch analysis can be used to reveal the nonlinear correlation between two objectives in space, which has been applied to economic and social fields such as agriculture, housing and employment [33][34][35][36]. In this paper, to figure out the spatial relationship between agricultural water and land resources in Ningxia, the spatial mismatch index of agricultural water-to-land (SMIWL) is calculated as follows:…”

Analysis Framework of China’s Grain Production System: A Spatial Resilience Perspective

“…Therefore, the spatial heterogeneity of the GPS provides a central description and quantification of the disturbance of this system at cross spatio-temporal scales [69], and thus determines the change of spatial resilience. The spatial heterogeneity of the GPS mainly includes the heterogeneity of the behavior of the smallholder, the spatio-temporal evolution of the production mode and livelihood system of the smallholder [80], and the spatial differences of the operating mechanism of rural communities [2]. In addition, spatio-temporal differences of farmland quality and distribution, spatial heterogeneity pattern of the regional man-land interrelationship and grain production policy [92], and a different spatial feedback of system disturbance also profoundly impact spatial resilience [7].…”

“…The land use transition, which is closely related to the transformation of the GPS, mainly involves the transition of both dominant and recessive morphologies of farmland [92], and the relationship between different types of land use. The amount of per capita farmland has become an important referencing index, directly reflecting the overall pattern of the "man-land relationship" at local and smallholder scale, and is also an important influencing factor of the spatial resilience of the GPS [1,2]. Under the background of rural-urban migration, the transition of the recessive morphology of farmland use (including the circulation proportion, the non-agricultural proportion, the non-grain proportion) has gradually been highlighted [104].…”

“…The strong contrast between the large population and limited available land resources creates a significant challenge for China's food security [1,2]. In 2014, total grain production amounted to 557 million tons and the per capita grain possession was 408.58 kg (Figure 1).…”

中国耕地利用转型格局及驱动因素研究——基于人均耕地面积视角

“…。随着众多学者针对林地转型的区 域差异、 成因和影响因素展开研究 [6,8] ， 土地利用转 型研究进一步扩展到其他土地利用类型， 耕地利用 转型研究成为土地利用转型研究的重要内容 [9] 。国 内外学者对耕地数量的变化趋势 [10] ， 耕地与农村宅 基地转型的耦合关系 [11] ， 耕地非农化过程 [12,13] 以及耕 地功能和价值的演化 [14,15] 开展了较深入的研究。此 外， 学者们针对中国耕地数量与经济发展之间的耦 合关系 [16,17] ， 边际耕地撂荒现象 [12] ， 耕地数量变化与 http://www.resci.net 粮食安全之间的关系 [9,18] 等开展了研究。 当前， 针对耕地面积变化、 耕地利用方式的变 化 [7,19] 及耕地利用转型研究的框架等问题展开了探 讨 [21] ， 但针对耕地利用转型的理论及实证研究仍较 为欠缺。人口数量是表征人类活动的重要指标， 人 均耕地面积的变化是耕地利用转型研究的核心内 容之一 [9] ， 既可以反映出耕地面积的变化趋势， 也可 以衡量社会经济发展过程中人口的流动趋势 [22] ， 进 而可以揭示区域人地关系的演化过程 [20,23] 。通过分 析城镇化进程中人均耕地面积变化及其影响机制 与模式， 可为有效保护耕地资源和保障区域粮食安 全提供理论指导 [9,18] 。因此， 本文以林地转型理论为 [37] ， 包括空间滞后模…”