Respon Tanaman Bawang Merah Pada Beberapa Jarak Tanam Dalam Pola Tanam Tumpangsari Dengan Jagung

The implementation of intercropping is one alternative that can be done to increase the diversity of crops cultivated by farmers, due to the increasing activity of land conversion and limited ownership. The practices of growing several types of crops on the same land and time can provide several advantages. The plantation of corn and shallot on the same field and at the relatively same time will contribute to meet the community's needs for food and feed, especially during the current covid-19 pandemic. The use of various spacing of shallot within corn plantations is expected to increase income and land-use efficiency. The results showed that narrow space of shallots (10 cm × 15 cm) gave a higher unit area yield, and a wider space (20 cm × 20 cm) gave a higher land equivalence ratio comparing to other plant spacing (10cm × 15cm, and 10cm × 20cm).

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Collard greens and chicory intercropping efficiency as a function of chicory (Cichorium intybus) transplant time

Revista de la Facultad de Ciencias Agrarias UNCuyo ◽

10.48162/rev.39.043 ◽

2021 ◽

Vol 53 (2) ◽

pp. 91-99

Author(s):

Tancredo José Carlos ◽

Arthur Bernardes Cecílio Filho ◽

Danilo Dos Reis Cardoso Passos ◽

Isaias Dos Santos Reis

Keyword(s):

Land Use ◽

Crop Yields ◽

Unit Area ◽

Efficiency Index ◽

Collard Greens ◽

Land Use Efficiency ◽

Maximum Value ◽

Use Efficiency ◽

Increase In Productivity ◽

Collard Green

Vegetable intercropping has advantages over single cultivation in terms of less environmental impact. However, to convince farmers to adopt this production system, it is necessary to prove greater efficiency in the production of more food per unit area and therefore an increase in productivity. An experiment was carried out aiming to evaluate the effect of the chicory transplant time in intercrops with collard greens on crop yields and land use efficiency index (LUE). The experimental design was a randomized block, with nine treatments in a 2 × 4 + 1 factorial scheme, and four replications. Crop systems (intercrop and monoculture) and chicory transplant time (0, 14, 28 and 42 days after transplant (DAT) of collard greens) were evaluated. The collard greens yield increased as the chicory transplant time was delayed. The total and per harvest yields of chicory were not influenced by its transplant time. Regardless of chicory transplant time, collard greens and chicory intercropping provided greater LUE than their monocultures and reached the maximum value (52% higher) when the chicory was transplanted 42 days after collard greens. Highlights: The collard green yield increased by 11 kg ha-1 for each day of delay in the chicory transplant (0 to 42 days). The total and per harvest chicory yields were not influenced by its transplant time in relation to collard green transplant. The collard green and chicory intercropping provided 52% higher land use efficiency than their monocultures when the chicory was transplanted 42 days after collard green.

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How land transfer affects agricultural land use efficiency: Evidence from China’s agricultural sector

Land Use Policy ◽

10.1016/j.landusepol.2021.105300 ◽

2021 ◽

Vol 103 ◽

pp. 105300 ◽

Cited By ~ 1

Author(s):

Rilong Fei ◽

Ziyi Lin ◽

Joseph Chunga

Keyword(s):

Land Use ◽

Agricultural Sector ◽

Agricultural Land ◽

Agricultural Land Use ◽

Land Use Efficiency ◽

Land Transfer ◽

Use Efficiency

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Assessment and Spatial-Temporal Evolution Analysis of Urban Land Use Efficiency under Green Development Orientation: Case of the Yangtze River Delta Urban Agglomerations

Land ◽

10.3390/land10070715 ◽

2021 ◽

Vol 10 (7) ◽

pp. 715

Author(s):

Yingkai Tang ◽

Kun Wang ◽

Xuanming Ji ◽

He Xu ◽

Yangqing Xiao

Keyword(s):

Land Use ◽

Urban Development ◽

Evaluation System ◽

Yangtze River Delta ◽

Urban Land ◽

Urban Land Use ◽

Land Use Efficiency ◽

Green Development ◽

Use Efficiency ◽

Development Orientation

Rapid urbanization has provided a strong impetus for the economic growth of China, but it has also caused many problems such as inefficient urban land use and environmental pollution. With the popularization of the concept of green and sustainable development, the Environmental-Social-Governance (ESG) assessment concept is widely accepted. The government and residents are paying more and more attention to environmental issues in urban development, and environmental protection has formed an important part of urban development. In this context, this study takes 26 cities in the Yangtze River Delta as examples to build an evaluation system for urban land-use efficiency under green development orientation. The evaluation system takes into account the inputs of land, capital, labor, and energy factors in the process of urban development. Based on emphasizing economic output, the social benefits and undesired outputs brought about by urban development are taken into account. This paper measures urban land use efficiency by the super-efficiency SBM model, and on this basis, analyses the spatial-temporal evolution characteristics of urban land-use efficiency. Further, this paper measures urban land use efficiency without considering undesired outputs and compares the two evaluation methods. Again, the comparison illustrates the rationality of urban land use efficiency evaluation system under green development orientation.

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Does the Construction and Operation of High-Speed Rail Improve Urban Land Use Efficiency? Evidence from China

Land ◽

10.3390/land10030303 ◽

2021 ◽

Vol 10 (3) ◽

pp. 303

Author(s):

Xinhai Lu ◽

Yifeng Tang ◽

Shangan Ke

Keyword(s):

Economic Growth ◽

Land Use ◽

High Speed ◽

Urban Land ◽

Urban Land Use ◽

Western China ◽

High Speed Rail ◽

Land Use Efficiency ◽

Use Efficiency ◽

The Impact

The construction and operation of high-speed rail (HSR) has become an important policy for China to achieve efficiency and fairness and promote high-quality economic growth. HSR promotes the flow of production factors such as labor and capital and affects economic growth, and may further affect urban land use efficiency (ULUE). To explore the impact of HSR on ULUE, this paper uses panel data of 284 cities in China from 2005 to 2018, and constructs Propensity Score Matching-Differences in Differences model to evaluate the effect of HSR on ULUE. The result of entire China demonstrates that the HSR could significantly improves the ULUE. Meanwhile, this paper also considers the heterogeneity of results caused by geographic location, urban levels and scales. It demonstrates that the HSR has a significantly positive effect on ULUE of Eastern, Central China, and large-sized cities. However, in Western China, in medium-sized, and small-sized cities, the impact of HSR on ULUE is not significant. This paper concludes that construction and operation of HSR should be linked to urban development planning and land use planning. Meanwhile, the cities with different geographical locations and scales should take advantage of HSR to improve ULUE and promote urban coordinated development.

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Does Smart City Construction Improve the Green Utilization Efficiency of Urban Land?

Land ◽

10.3390/land10060657 ◽

2021 ◽

Vol 10 (6) ◽

pp. 657

Author(s):

Aiping Wang ◽

Weifen Lin ◽

Bei Liu ◽

Hui Wang ◽

Hong Xu

Keyword(s):

Land Use ◽

Urban Development ◽

Financial Development ◽

Smart City ◽

Urban Land ◽

Utilization Efficiency ◽

Land Use Efficiency ◽

Use Efficiency ◽

City Construction ◽

Green Land

Frontier research primarily focuses on the effect of urban development models on land use efficiency, while ignoring the effect of new-type urban development on the green land use efficiency. Accordingly, this paper employs a super efficiency slacks-based measure (super-SBM) model with undesirable outputs to measure the green land use efficiency based on panel data from 152 prefecture-level cities for the period 2004–2017. We construct a difference-in-differences (DID) model in this paper to test the impact of smart city construction on the green utilization efficiency of urban land and its transmission mechanism. The results showed that: (1) The smart city construction significantly improved the green utilization efficiency of urban land, increasing the general efficiency by 15%. (2) There is significant city-size heterogeneity in the effect of smart city construction on improving green utilization efficiency of urban land. The policy effect is more obvious in mega cities and above than in very-large-sized cities. (3) The city-feature heterogeneity results reveal that, in cities with a higher level of human capital, financial development, and information infrastructure, the effectiveness of smart city construction in improving the green utilization efficiency of urban land are more obvious, and in cities with a higher level of financial development, the effects of the urban policy were more optimal. (4) The smart city construction promotes the green utilization efficiency of urban land through by the information industry development and the regional innovation capabilities.

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A Novel Efficiency Measure Model for Industrial Land Use Based on Subvector Data Envelope Analysis and Spatial Analysis Method

Complexity ◽

10.1155/2017/9516267 ◽

2017 ◽

Vol 2017 ◽

pp. 1-11 ◽

Cited By ~ 6

Author(s):

Wei Chen ◽

Rui He ◽

Qun Wu

Keyword(s):

Land Use ◽

Spatial Analysis ◽

Spatial Autocorrelation ◽

Industrial Development ◽

Efficiency Measure ◽

Industrial Land ◽

Envelope Analysis ◽

Land Use Efficiency ◽

Industrial Land Use ◽

Use Efficiency

With the rapid and unbalanced development of industry, a large amount of cultivated land is converted into industrial land with lower efficiency. The existing research is extensively concerned with industrial land use and industrial development in isolation, but little attention has been paid to the relationship between them. To help address this gap, the paper creates a new efficiency measure method for industrial land use combining Subvector Data Envelope Analysis (DEA) with spatial analysis approach. The proposed model has been verified by using the industrial land use data of 30 Chinese provinces from 2001 to 2013. The spatial autocorrelation relationship between industrial development and industrial land use efficiency is explored. Furthermore, this paper examines the effects of industrial development on industrial land use efficiency by spatial panel data model. The results indicate that the industrial land use efficiency and the industrial development level in the provinces of eastern region are higher than those of the western region. The spatial distribution of industrial land use efficiency shows remarkable positive spatial autocorrelation. However, the level of industrial development has obvious negative spatial autocorrelation since 2009. The improvement of industrial development has a significant positive impact on the industrial land use efficiency.

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