浙江农业学报 ›› 2019, Vol. 31 ›› Issue (9): 1563-1574.DOI: 10.3969/j.issn.1004-1524.2019.09.22

• 农业经济与发展 • 上一篇    

净碳排放约束下的中国耕地利用效率评价及空间关联研究

吴昊玥1, 黄瀚蛟2, 何艳秋1, 陈文宽1,*   

  1. 1.四川农业大学 管理学院,四川 成都 611130;
    2.西北农林科技大学 林学院,陕西 咸阳 712100
  • 收稿日期:2019-04-26 出版日期:2019-09-25 发布日期:2019-10-11
  • 通讯作者: *陈文宽,E-mail: wkc9889@163.com
  • 作者简介:吴昊玥(1996—),女,四川德阳人,博士研究生,研究方向为资源经济与土地管理。E-mail: tsuki710064315@163.com
  • 基金资助:
    国家自然科学基金青年科学基金(71704127); 四川省社会科学规划重大项目(SC17ZD06); 四川省社会科学研究“十三五”规划项目(SC18TJ018)

Evaluation and spatial correlation of cultivated land utilization efficiency under net carbon emission constraint of China

WU Haoyue1, HUANG Hanjiao2, HE Yanqiu1, CHEN Wenkuan1,*   

  1. 1. College of Management, Sichuan Agricultural University, Chengdu 611130, China;
    2. College of Forestry, Northwest A&F University, Xianyang 712100, China
  • Received:2019-04-26 Online:2019-09-25 Published:2019-10-11

摘要: 为探索环境约束下的耕地有效利用方式,把握区域协同发展路径,将耕地利用过程的碳排放、碳吸收双重效应纳入考虑范围,采用SBM-Undesirable模型对2007—2016年中国30个省(市、自治区)的耕地利用效率进行评价,并基于空间距离平方倒数矩阵,依托Moran's I,从全域和局域2个视角探讨耕地利用效率的空间格局及关联效应。结果显示:中国耕地利用效率整体较高,均值为0.867,地区间效率差异明显,自高到低可划分为5个等级,效率较高的单元大多位于东南沿海地区、西部地区和东北地区,效率较低的单元主要位于北部沿海地区和黄河中游地区。多数低效率单元的投入要素及净碳排放存在冗余。省际耕地利用效率呈空间正相关性,随时间推移,其空间关联格局经历了“多核分布”—“一带一片”—“低极主导”的过程。各地在耕地利用过程中需控制非期望产出,改善投入要素配置,因地制宜加强合作,探索区域协同的耕地高效利用路径。

关键词: 净碳排放, 耕地利用效率, 空间关联

Abstract: In order to explore the effective utilization mode of cultivated land and grasp the cooperative mechanism under the constraint of environment, the dual effects of cultivated land utilization were taken into consideration, which consisted of carbon emission and absorption. The SBM-Undesirable model was adopted to evaluate the cultivated land utilization efficiency of 30 provinces (municipalities, autonomous regions) in China from 2007 to 2016. Besides, based on the matrix of spatial distance squares' reciprocal and Moran's I, the spatial agglomeration of the cultivated land utilization efficiency was discussed from both global and local perspectives. It was shown that the overall cultivated land utilization efficiency was relatively high, of which the average reached up to 0.867, yet different regions showed diverse performance and could be divided into 5 grades. Most of the high-efficiency areas were located in the southeastern coastal area, the western area and the northeastern area, while the low-efficiency areas were mainly situated in the northern coastal area and the middle reaches of the Yellow River. The majority of regions with low efficiency showed redundant inputs and net carbon emissions. There was a certain spatial agglomeration of the cultivated land utilization efficiency within provinces, and the spatial correlation pattern experienced a process of “multi-core distribution” to “one string and one area” to “low pole dominance”. Attentions should be paid to control the unexpected output and optimize the input, strengthen regional cooperation according to local conditions, and explore the path of efficient utilization of cultivated land with regional coordination.

Key words: net carbon emission, cultivated land utilization efficiency, spatial correlation

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