Land use transition potential and its assessment framework
Received date: 2018-04-26
Request revised date: 2018-10-02
Online published: 2019-06-12
Copyright
It is essential to promote efforts on land use transition to carry out definition, theories and approaches for land use transition potential estimation. This paper made a systematic review on land use, land use and cover change (LUCC), land use transition and their interactions. Discussion mainly focused on the definition, and connotation and creation mechanisms of land use transition potential was then claimed based on the expanded land use capacity. Further, this work developed a theoretical framework for estimating land use transition potential by land use transition modelling with land use benefits as driving forces, and resource and environment carrying capacity as restricting factors. It is declared that, (1) land use transition, as the outcome of land use, obtained the characteristic, namely changing and controlling land use morphology, provided primaries materials for promoting land use transition potential. (2) Land use transition potential refers to the differences between the current land use morphology and optimal one derived in special land use transition adjusted by certain policies and techniques following the regional development goals from a long-term perspective. Obviously, land use transition potential is virtually an expansion and further definition of land use capacity. (3) Land use transition potential could be made by adjusting the land use morphology using policies and techniques that are usually efficient and competent dealing with this issue. And it can also be promoted by the initiatives concerning guidance for land use transition. They compose the framework for land use transition potential estimation. (4) Moreover, it can make full use of the mechanisms of land use transition to model land use transition and thus determine the land use potential from a dynamic perspective. In the study, the framework was developed based on land use transition modelling taking into account driving mechanisms by land use transition benefits and restrictions by resources and environmental carrying capacity. Though issues especially including approaches for optimizing land use transition patterns, reconstruction and models for land use transition mechanisms under different management scenarios remain a challenge for use, results and conclusions derived from this study may promote researches on land use transition theory and its applications in land-use management decisions.
HU Shougeng , TONG Luyi , LONG Hualou . Land use transition potential and its assessment framework[J]. GEOGRAPHICAL RESEARCH, 2019 , 38(6) : 1367 -1377 . DOI: 10.11821/dlyj020180421
Fig. 1 Coupled land-socioeconomy-ecoenvironment system图1 土地-社会经济-生态环境耦合系统 |
Fig. 2 Conceptual model for the potential of land use transition图2 土地利用转型潜力概念模型 |
Tab. 1 Major characteristics of land use capacity and land use transition potential表1 土地利用潜力与土地利用转型潜力的主要特征 |
| 特征类型 | 土地利用潜力 | 土地利用转型潜力 |
|---|---|---|
| 研究需求 | 破解特定土地问题。 | 服务区域发展(破解系列/综合问题)。 |
| 评价思路 | 通过对土地利用限制性因子优化的静态假设和推导,预判土地利用最优形态并估算土地利用潜力。 | 通过全面分析土地利用转型机制,模拟“土地-社会经济-生态环境”耦合系统在不同人力干预情境下的动态演化过程及与之对应的土地利用转型结果,并以最优土地利用转型结果为基础测算土地利用转型潜力。 |
| 技术要求 | 可经“经验性预判”或推导实现潜力评价。 | 须进行动态模拟,才能获得潜力评价结果。 |
| 结果特征 | 主要受情境假设和“预判”的合理性影响,结果通常具有较强的不确定性。 | 结果的准确性主要受土地利用转型机理及模拟所采用数据与模型的完备性影响,不确定性相对较弱。 |
3.3 土地利用转型潜力的形成机制 |
Fig. 3 Framework for assessing land use transition potential图3 土地利用转型潜力评价框架 |
Tab. 2 Major approaches optimizing land use transition表2 土地利用转型优化的主要路径 |
| 类型 | 机制 | 典型案例 | 特征 |
|---|---|---|---|
| 土地利用形态改造类 | 通过工程、技术手段,快速、直接地改变土地利用形态。 | 土地整治(土地开发/平整、土壤改良、“三旧改造”等)。 | 高效,结果与目标的匹配程度高;干扰性强、技术成本高。 |
| 土地利用活动干预类 | 采用强制性措施或手段,快速遏制或促成特定土地利用活动与土地利用转型。 | 土地征收、城中村改造、规划(土地利用规划、控制性详规)等。 | 强制性、政府/管理部门主导、不确定性较小;易引发冲突。 |
| 土地利用活动引导类 | 利用财政补贴、价格调整等措施,以效益为驱动,引导土地利用决策与行为,间接影响土地利用转型。 | 退耕还林、土地流转、良种补贴、提升农产品价格等。 | 基于引导的自发行为;时滞性与不确定性大。 |
Tab. 3 Major factors affecting land use transition表3 土地利用转型的主要影响因素 |
| 类型 | 影响途径 | 主要因素 | 特征 |
|---|---|---|---|
| 影响土地利用转型方向及模式选取的因素 | 以政府为主导,通过制定发展战略、政策,引导/约束土地利用转型方向与模式。 | 国家/区域战略:生态文明、城乡一体化、新型城镇化、美丽乡村等。 | 对土地利用转型的影响是全面、深入的,但调整、改动的可行性较低。 |
| 地方政策:土地利用规划、城市规划、乡村规划、生态保护区等。 | 对区域性土地利用转型具有较强的影响力,可根据需求进行小幅调整。 | ||
| 影响土地利用转型过程的因素 | 通过影响土地利用使用者(经营者)土地利用决策与实践行为,间接影响土地利用转型过程与结果。 | 资源禀赋:自然(土地、能源)、人文(人力、市场)资源状况。 | 不可流动的资源可控性差,人文资源可通过合理方式进行培育。 |
| 自然地理条件:土壤、坡度、海拔、气温、降水、光照等。 | 土壤、坡度可经工程/技术手段完善;干预气温、降水等因素的可行性差。 | ||
| 生态环境:水、大气等环境。 | 人工干预或调整的可行性差。 | ||
| 社会经济条件:居民收入、农产品价格等。 | 可通过政策或市场引导,实现优化与调控。 | ||
| 科学技术:土地利用/整治技术、材料科学等。 | 取决于相应的学科与技术发展的客观状况。 | ||
| 土地利用条件:水利、交通等设施完备程度、机械化程度等。 | 可利用工程/技术措施、政策等手段进行完善。 | ||
| 土地经营者综合治理能力:学历、年龄、土地经营技巧等。 | 可通过教育/培训、政府扶持等途径完善。 |
The authors have declared that no competing interests exist.
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