Conversion from rice–wheat rotation to rice–crayfish coculture increases net ecosystem service values in Hung-tse Lake area, east China

Xu, Qiang; Liu, Tao; Guo, Halun; Dou, Zhi; Gao, Hui; Zhang, Hongcheng

doi:10.1016/j.jclepro.2021.128883

Cited by 38 publications

(18 citation statements)

References 22 publications

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“…The economic returns for farmers continuing traditional agro-aquaculture production methods could be greatly increased and should encourage farmers to adopt the integrated rice–fish–duck farming system. The results were consistent with the study of Xu et al, 2021 [ 87 ], who found that conversion to rice–crayfish co-culture increased the net ES value by 145.3–176.9%.…”

Section: Discussionsupporting

confidence: 93%

Valuation of Ecosystem Services for the Sustainable Development of Hani Terraces: A Rice–Fish–Duck Integrated Farming Model

Yuan

Gao

Shen

et al. 2022

IJERPH

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As a complementary and symbiotic agro-ecological cycle system, a nature-based integrated rice–fish–duck farming ecosystem was developed in the Honghe Hani Rice Terraces. The main research objective was to evaluate the ecosystem services based on case studies of the Hani integrated rice–fish–duck terraced farming system and determine its potential and its importance as an ecological asset. We developed a valuation model to assess the value of the integrated farming system based on the three aspects of provisioning, regulation and maintenance, and cultural services; we selected eight groups and 10 indictors to evaluate the ecosystem services of the integrated ecosystem in Honghe Hani Rice Terraces was 3.316 billion CNY, of which the provisioning service value was 1.76 billion CNY, the regulation and maintenance service value was 1.32 billion CNY, and the cultural services value was 230.85 million CNY. The evaluation will be useful as a theoretical reference for poverty alleviation policy makers in similar poverty-stricken areas, enabling them to better protect and promote this mode of farming and further promote the protection of the natural environment and cultural heritage alongside the sustainable development of natural resources and human well-being.

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Section: Discussionsupporting

confidence: 93%

Valuation of Ecosystem Services for the Sustainable Development of Hani Terraces: A Rice–Fish–Duck Integrated Farming Model

Yuan

Gao

Shen

et al. 2022

IJERPH

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“…As the world's highest rice-producing country, the integrated rice-crayfish farming system has rapidly developed since its introduction in China [2]. The system organically combines rice cultivation and crayfish farming, which improves its ecological service value through factors such as the rice yield and nutrient utilization [3][4][5]. It promotes the sustainable development of agriculture and aquaculture [6,7] and has a great impact on the local farmland ecology and food security [8,9].…”

Section: Introductionmentioning

confidence: 99%

A Bi-Temporal-Feature-Difference- and Object-Based Method for Mapping Rice-Crayfish Fields in Sihong, China

Wang

Yang

et al. 2023

Remote Sensing

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Rice–crayfish field (i.e., RCF) distribution mapping is crucial for the adjustment of the local crop cultivation structure and agricultural development. The single-temporal images of two phenological periods in the year were classified separately, and then the areas where the water disappeared were identified as RCFs in previous studies. However, due to the differences in the segmentation of lakes and rivers between the two images, the incorrect extraction of RCFs is unavoidable. To solve this problem, a bi-temporal-feature-difference-coupling object-based (BTFDOB) algorithm was proposed in order to map RCFs in Sihong County. We mapped RCFs by segmenting the bi-temporal images simultaneously based on the object-based method and selecting appropriate feature differences as the classification features. To evaluate the applicability, the classification results of the previous two years obtained using the single-temporal- and object-based (STOB) method were compared with the results of the BTFDOB method. The results suggested that spectral feature differences showed high feature importance, which could effectively distinguish the RCFs from non-RCFs. Our method worked well, with an overall accuracy (OA) of 96.77%. Compared with the STOB method, OA was improved by up to 2.18% across three years of data. The RCFs were concentrated in the low-lying eastern and southern regions, and the cultivation scale was expanded in Sihong. These findings indicate that the BTFDOB method can accurately identify RCFs, providing scientific support for the dynamic monitoring and rational management of the pattern.

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“…The application of green manure was also reported to reduce the occurrence of insect pests and plant diseases (Naz et al, 2015). More than 90% of world's paddy fields are under shallow water, which could provide a suitable environment for a wide range of aquatic animals and waterfowl, including fish, crab, crayfish, softshell turtles and ducks (Pirdashti et al, 2015;Zhang et al, 2016;Xu et al, 2021). Coculture of rice and waterfowl or aquatic animals has been proposed as a strategy to reduce the dependence on external material and energy inputs, such as pesticides, fertilizers and forage, by efficient internal recycling (Cavalett et al, 2006) while the risks of environmental pollution related to rice production (Xie et al, 2011;Xu et al, 2021) is also decreasing.…”

Section: Introductionmentioning

confidence: 99%

Integrated emergy and economic evaluation of the dominant organic rice production systems in Jiangsu province, China

Gao

Wang

Sun³

et al. 2023

Front. Plant Sci.

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Changing from conventional to organic farming might have fewer negative environmental impacts because of the avoidance of synthetic fertilizer and chemical pesticides. In this study, the economic viability and environmental and sustainability performance of the four dominant organic (rice-green manure rotation (RG), rice-duck co-culture (RD), rice-crayfish co-culture (RCF) and rice monoculture (RM)) and one conventional (rice monoculture (CRM)) rice production modes were evaluated in Jiangsu Province, China. Compared with the CRM mode, organic rice production increased economic benefits density and improved the economic benefit of crop land and irrigation water use. With the lowest total emergy input and the highest rice yield, the CRM mode showed the highest ecological efficiency in converting resources to total available energy content and nutrition density unit among the five rice production modes. However, the RCM mode showed higher environmental pressure and lower sustainability than the four organic modes due to the larger proportion of nonrenewable emergy input. The RM mode was the most uneconomic organic rice production mode with the highest cost input and the lowest product output but had relatively higher sustainability due to the higher proportion of renewable resources to total emergy inputs. Compared with the RM mode, the value-to-cost ratio, economic benefit density and benefit-cost ratio were increased in the RG, RD and RCF modes. Although the RD and RCF modes had higher efficiency in converting resources to total nutrition density units and monetary value, they imposed higher environmental pressure with a lower renewable fraction and emergy sustainability index than those in the RM mode. The RG mode had higher emergy utilization efficiency and the highest renewable fraction and emergy sustainability index among the four organic rice production modes. Considering the ecological and economic effects, the RG mode was conducive to improving the economic viability and sustainability of organic rice production.

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Conversion from rice–wheat rotation to rice–crayfish coculture increases net ecosystem service values in Hung-tse Lake area, east China

Cited by 38 publications

References 22 publications

Valuation of Ecosystem Services for the Sustainable Development of Hani Terraces: A Rice–Fish–Duck Integrated Farming Model

Valuation of Ecosystem Services for the Sustainable Development of Hani Terraces: A Rice–Fish–Duck Integrated Farming Model

A Bi-Temporal-Feature-Difference- and Object-Based Method for Mapping Rice-Crayfish Fields in Sihong, China

Integrated emergy and economic evaluation of the dominant organic rice production systems in Jiangsu province, China

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