Visualizing clustering characteristics of multidimensional arable land quality indexes at the county level in mainland China

2021 ◽  
pp. 0308518X2110622
Author(s):  
Sijing Ye ◽  
Changqing Song ◽  
Peichao Gao ◽  
Chenyu Liu ◽  
Changxiu Cheng
Keyword(s):  
Land Use ◽  
Arable Land ◽  
Mainland China ◽  
Sufficient Information ◽  
Land Resource ◽  
Land Quality ◽  
Land Protection ◽  
Regional Coordination ◽  
Quality Indexes ◽  
Arable Land Use

The evaluation of the arable land ecosystem services capacity and arable land use intensity is important for recognizing regional key factors that impact the change of arable land attributes. A chronic lack of cooperation persists between these two fields of study, which makes providing sufficient information to support developing arable land use management and control policies difficult. In this study, the clustering characteristics of four arable land quality indexes have been assessed using the K-means algorithm to indicate the regional coordination between arable land resource protection and arable land use. The clustering results have been visualized using circular cartogram. This study can contribute to the identification of key regional challenges in China's arable land use and help to build the framework of other countries’ arable land protection policies.

scholarly journals Recessive Transition Mechanism of Arable Land Use Based on the Perspective of Coupling Coordination of Input–Output: A Case Study of 31 Provinces in China

Land ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 41
Author(s):  
Yi Lou ◽  
Guanyi Yin ◽  
Yue Xin ◽  
Shuai Xie ◽  
Guanghao Li ◽  
...  
Keyword(s):  
Land Use ◽  
Evaluation Model ◽  
Arable Land ◽  
Temporal Trends ◽  
Mainland China ◽  
Input Output ◽  
Transition Mechanism ◽  
Input And Output ◽  
Spatio Temporal ◽  
Arable Land Use

In the rapid process of urbanization in China, arable land resources are faced with dual challenges in terms of quantity and quality. Starting with the change in the coupling coordination relationship between the input and output on arable land, this study applies an evaluation model of the degree of coupling coordination between the input and output (D_CCIO) on arable land and deeply analyzes the recessive transition mechanism and internal differences in arable land use modes in 31 provinces on mainland China. The results show that the total amount and the amount per unit area of the input and output on arable land in China have presented different spatio-temporal trends, along with the mismatched movement of the spatial barycenter. Although the D_CCIO on arable land increases slowly as a whole, 31 provinces show different recessive transition mechanisms of arable land use, which is hidden in the internal changes in the input–output structure. The results of this study highlight the different recessive transition patterns of arable land use in different provinces of China, which points to the outlook for higher technical input, optimized planting structure, and the coordination of human-land relationships.

scholarly journals Understanding Farmers’ Perceptions and Behaviors towards Farmland Quality Change in Northeast China: A Structural Equation Modeling Approach

2018 ◽  
Vol 10 (9) ◽  
pp. 3345 ◽  
Author(s):  
Hongbin Liu ◽  
Xiaojuan Luo
Keyword(s):  
Land Use ◽  
Structural Equation ◽  
Economies Of Scale ◽  
Sustainable Land Use ◽  
Equation Modeling ◽  
Land Resource ◽  
Quality Change ◽  
Land Quality ◽  
Land Protection ◽  
Farmland Protection

Farmland protection is the most important land science research issue in developing countries, especially in China, due to serious land degradation. This paper aimed to reveal the causal chain among driving factors, farmers’ land protection perceptions, behavioral responses, and land quality change by applying a structural equation model (SEM), based on a cross-sectional dataset of 238 households surveyed, and matched plot soil sample results in the Sujiatun District, in Liaoning province, China. The results show that, compared to internal factors, external factors play more important roles in shaping farmers’ land protection awareness which subsequently transfer into land protection behaviors. Various land use behaviors lead to different impacts on land quality, in which the crop planting structure and land input density have dominant effects on changes in the soil nutrient content. The results imply that a stable and reasonable price mechanism for agricultural inputs and outputs is meaningful to land protection. Moderate land circulation would help reduce land fragmentation, develop agricultural modernization, improve production efficiency, and achieve economies of scale. In addition, knowledge, training and environmental policy information on farmland protection play key roles in land conservation activities. These main results have important implications for policymakers with regard to promoting land protection activities, alleviating land resource and environmental pressures, and thus achieving the goal of sustainable land use.

scholarly journals Analysing the safe and just operating space of agriculture in the world: past, present and future

2019 ◽  
Author(s):  
Ajishnu Roy ◽  
Kousik Pramanick
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Ecological Footprint ◽  
Arable Land ◽  
Planetary Boundaries ◽  
Nitrogen Use ◽  
Freshwater Use ◽  
Safe Operating ◽  
Arable Land Use

AbstractAgriculture, along with industry and household sector are three major sectors of human consumption. Agriculture has proved to be a major contributor to exceeding planetary boundaries. Here, we have explored the impact of agriculture in the Earth system processes, through eight dimensions of planetary boundaries or safe operating spaces: climate change (10.73%), freshwater use (91.56%), arable land use (37.27%), nitrogen use (95.77%), phosphorus use (87.28%), ecological footprint (19.42%), atmospheric pollution (2.52% - 38.08%) and novel entities. In this work, we have also shown role of agriculture to the socio-economic development dimensions: gender equality, employment and economic growth. We have shown that the safe operating limits for agriculture are going to decline by almost 55% (climate change), 300% (freshwater use), 50-55% (arable land use), 180% (nitrogen use), 265% (phosphorus use) and 20% (ecological footprint) in 2050, if the most inefficient way of consumption is chosen and continued. To alleviate the role of agriculture in transgressing planetary boundaries, it is indispensable to comprehend how many roles of agriculture is playing and where which target should be set to framework the national agricultural policies in coherence with attaining sustainable development goals of UN by 2030.

scholarly journals Four-year measurement of net ecosystem gas exchange of switchgrass in a Mediterranean climate after long-term arable land use

GCB Bioenergy ◽  
2018 ◽  
Vol 11 (3) ◽  
pp. 466-482 ◽  
Author(s):  
Nicola Di Virgilio ◽  
Osvaldo Facini ◽  
Andrea Nocentini ◽  
Marianna Nardino ◽  
Federica Rossi ◽  
...  
Keyword(s):  
Land Use ◽  
Gas Exchange ◽  
Mediterranean Climate ◽  
Arable Land ◽  
Arable Land Use

scholarly journals Optimization of the National Land Space Based on the Coordination of Urban-Agricultural-Ecological Functions in the Karst Areas of Southwest China

2019 ◽  
Vol 11 (23) ◽  
pp. 6752 ◽  
Author(s):  
Xiaoqing Zhao ◽  
Sinan Li ◽  
Junwei Pu ◽  
Peipei Miao ◽  
Qian Wang ◽  
...  
Keyword(s):  
Land Use ◽  
Southwest China ◽  
Arable Land ◽  
Ecological Environment ◽  
Spatial Structures ◽  
Ecological Functions ◽  
Land Protection ◽  
Karst Areas ◽  
Functional Areas ◽  
Land Space

National land spatial planning is dominated by urban-agricultural-ecological functions and has become a Chinese national strategic issue. However, the three functional spaces have serious conflicts in the karst areas, causing inconsistencies in regional development and triggering poverty and a more serious situation for the ecological environment. In this study, we used the gray multi-objective dynamic programming model and the conversion of land use and its effects at small region extent model to simulate the developmental structures of future land use in the karst areas of Southwest China under a socioeconomic development scenario, an arable land protection scenario and an ecological security scenario. Finally, based on the coordination of the urban-agricultural-ecological functions, we used a functional space classification method to optimize the spatial structures of the national land space for 2035 year and to identify different functional areas. The results showed that the three scenarios with different objectives had differences in the quantities and spatial structures of land use but that the area of forestland was the largest and the area of water was the smallest in each scenario. The optimization of the national land space was divided into seven functional areas—urban space, agricultural space, ecological space, urban-agricultural space, urban-ecological space, agricultural-ecological space and urban-agricultural-ecological space. The ecological space was the largest and the urban-ecological space was the smallest among seven functional areas. The different types of functional spaces had significant differentiation characteristics in the layouts. The urban-agricultural space, urban-ecological space, agricultural-ecological space and urban-agricultural-ecological space can effectively alleviate the impacts of human activities and agricultural production activities in karst areas, promote the improvement of rocky desertification and improve the quality of the regional ecological environment. The results of this research can provide support for decisions about the balanced development of the national land space and the improvement of environmental quality in the karst areas.

scholarly journals Competitive ability of grain-forage varieties of spring vetch when grown in a mixture with rapeseed

2020 ◽  
Vol 222 ◽  
pp. 03009
Author(s):  
A.V. Bezgodov ◽  
K.A. Galimov ◽  
V.F. Akhmetkhanov
Keyword(s):  
Land Use ◽  
High Efficiency ◽  
Arable Land ◽  
Single Species ◽  
Middle Urals ◽  
Seeding Rate ◽  
Grain Crop ◽  
Germinating Seeds ◽  
Mixed Crops ◽  
Arable Land Use

The object of the research is to study the influence of the method of growing mown and grain-forage varieties of spring vetch in mixed crops with spring rapeseed on the seed yield and crop structure. Indicators that characterize productivity, intensity of arable land use, competitiveness and aggressiveness of crops are considered. Sowing spring vetch with a seeding rate of 1.3, 0.8, 0.6 and 0.4 million germinating seeds per hectare mixed with rapeseed leads to the formation of a grain crop that significantly exceeds the yield for single-species vetch sowing. Evaluation of Land Equivalent Ratio (LER) shows that when using vetch-rapeseed crops, the productivity of 1 ha of arable land increases from 1.38 to 1.98 times, while both the influence of varietal specificity and the seeding rate of the legume component is manifested. The efficiency of arable land use increases due to the interaction of both crops and increasing their competitiveness in the agrocenosis. In the conditions of the Middle Urals, high efficiency of vetch cultivation in mixed crops with rapeseed was revealed, and the influence of changes in the seeding rate on the yield of spring vetch seeds was established.

scholarly journals The significance of the seed bank as a potential for the reestablishment of arable-land vegetation in a marginal cultivated landscape

Web Ecology ◽  
2001 ◽  
Vol 2 (1) ◽  
pp. 83-87 ◽  
Author(s):  
R. Waldhardt ◽  
K. Fuhr-Bossdorf ◽  
A. Otte
Keyword(s):  
Land Use ◽  
Seed Bank ◽  
Arable Land ◽  
Seed Banks ◽  
German Research Foundation ◽  
German Research ◽  
Arable Land Use ◽  
Over Time

Abstract. As part of the German Research Foundation (DFG) project “Land Use Concepts for Marginal Regions”, since 1997 we have made analyses of the seed bank of 22 cultivated allotments, as well as of 15 meadow/pasture and 16 fallow allotments on former arable land of the Lahn-Dill Highlands, a marginal cultivated landscape in Hesse, Germany. One aim of this study is to determine according to which dynamic laws the seed bank of arable-land weeds is depleted after cultivation is abandoned. Depending on the intensity of the arable land use, the seed banks of rankers and cambisols that are presently still cultivated contain up to 1 004 800 seeds of arable-land species capable of germination m−3. Soils that were last cultivated less than ten years ago have much lower seed densities, while the seed bank of arable-land species is largely exhausted after only ca. 20 yr. This points to an exponential depletion of the seed bank of arable-land species and their abundance over time. On the basis of the present results, <20 yr remain in the Lahn-Dill Highlands for the reestablishment of characteristic arable-land vegetation from the seed bank.

Sign in / Sign up

Export Citation Format

Share Document