4.8 Article

Evaluating the the sustainable intensification of cultivated land use based on emergy analysis

期刊

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.techfore.2020.120449

关键词

Cultivated land; Sustainable intensification; Emergy analysis; Environmental management

资金

  1. National Natural Science Foundation of China [41930757, 41971243, 41961035]
  2. Academic and Technical Leaders Funding Program for Major Disciplines in Jiangxi Province [20172BCB22011]
  3. National Natural Science Foundation of Jiangxi Province [20202ACB203004]
  4. Humanities and Social Science Project of Jiangxi Provincial Department of Education [GL19111]
  5. Fok Ying-Tung Fund [141084]

向作者/读者索取更多资源

The study utilized energy analysis to assess the impact of cultivated land use on resources and the environment, revealing that the net loss of topsoil poses significant pressure on land protection, and the continuous increase in waste emissions requires agricultural managers to improve input factors.
Sustainable intensification provides a new research paradigm for coordinating the trade-offs between food demand and resource and environmental constraints. The sustainable intensification of cultivated land use can be seen as the material and energy processes required to sustain the land output functions and land use activities. In the present study, we used energy analysis to describe the input-output flow of Ruijin's cultivated land use processes to assess its level of sustainable intensification. In terms of input and output, the net loss of topsoil through cultivated land use is 1.75 times the resilience of the cultivated land system, which places tremendous pressure on cultivated land protection. In 2017, compared to 2010, the output energy of agricultural products decreased by 16.52%, and the energy of waste emissions increased by 4.24%. The continuous increase in agricultural waste discharge requires agricultural managers to improve the input of production factors through soil testing and formula fertilization and to optimize their planting structure to adjust the intensity of cultivated land use. The government's ecological protection requirements can alleviate environmental pressure and waste discharge, and land managers can sustainably intensify cultivated land use by carefully planning the spatial layout of agricultural production.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据