4.7 Article

Comparing specialised crop and integrated crop-livestock systems in China with a multi-criteria approach using the emergy method

期刊

JOURNAL OF CLEANER PRODUCTION
卷 314, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2021.127974

关键词

Crop-livestock integration; Manure fertiliser; Trade-off; Specialised agriculture; Environmental impacts

资金

  1. Strategic Priority Research Program of the Chinese Academy of Sciences [XDA19040303, XDA23050102]
  2. Key Program of the Chinese Academy of Sciences [KFZD-SW-113]
  3. UCAS Joint Ph.D. Training Program
  4. Yellow River Delta Scholars Program
  5. CLAND [ANR-16-CONV-0003]

向作者/读者索取更多资源

The study shows that the modern integrated crop-livestock system (ICLS) in China performs better in terms of environmental pressure, energy sustainability, and economic benefits, but has lower productivity compared to traditional specialised cropping systems (SCS). When substituting chemical nitrogen with manure fertiliser nitrogen, both ICLS and SCS show decreased productivity and environmental pressure, with ICLS displaying a less pronounced trade-off.
The dominant specialised cropping system (SCS) has supported the increasing population in China, although this agricultural production paradigm could lead to environmental problems. The modern integrated crop-livestock system (ICLS) in China, designed as a recycling paradigm, can alleviate the negative environmental impacts of SCS. However, it must be better investigated, especially due to the trade-off between increased production and environmental harm. In this study, we set up a multi-criteria evaluation with eight indicators based on emergy analysis to quantify and compare the performance of ICLS and SCS and to evaluate the performance of the indicators along a gradient when a proportion of chemical nitrogen is substituted with manure fertiliser nitrogen (PCSM). We examined one experimental modern ICLS and an average SCS by conducting a household survey in Shandong province. The results showed that the ICLS puts less pressure on the environment (ELR = 1.04), has higher emergy sustainability (ESI = 1.09), and generates higher economic benefits per unit area of land (LPO = 3789.94 $-ha(-1)). However, the productivity of the ICLS is lower (Tr = 1.66E+05 sej-J-1, EOD = 1.07E+11 Jha(-1)-yr(-1), EYR = 1.13) than that of the SCS. With an increasing gradient of PCSM, for both systems, the productivity and environmental pressure decreased sharply; this trade-off was less marked for the ICLS. Considering sustainable resource utilisation, environmentally friendly production, and system stability, the ICLS could be an option for Chinese agricultural production in regions with serious issues of manure pollution and cultivated land degradation. However, the ICLS needs to optimise the crop-livestock structure, strengthen scientific management, and improve productivity.

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

4.7
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