Erweiterte Suche der Leibniz Universität Hannover

We use a nationally representative sample dataset collected in 2004 and 2008 in Vietnam for our analysis. We find that cropland rental transactions promote farm technical efficiency and that the rental market transfers cropland from less to more efficient producers. We suggest that the constraints for cropland rental market operation be removed. In addition, promoting cropland registration for land use certi...

Cropland rental market and farm technical efficiency in rural Vietnam verfasst von Hoang Trieu Huy, Trung Thanh Nguyen Abstract Increasing farm technical efficiency in developing countries is essential to raise farm productivity, and cropland rental market is theoretically expected to contribute to farm production efficiency growth.

Earth observation data driven cropland soil monitoring A review verfasst von Nikolaos Tziolas, Nikolaos Tsakiridis, Sabine Chabrillat, Jos A.M. Demattê, Eyal Ben Dor, Asa Gholizadeh, George Zalidis, Bas van Wesemael Abstract We conducted a systematic review and inventory of recent research achievements related to spaceborne and aerial Earth Observation EO data driven monitoring in support of soil related strategic goals for a three ye...

Nitrogen fertilization adds annually 6.1 10 7 kmol H to European croplands, leading to annual loss of 6.1 10 9 kg CaCO 3. Assuming similar acidification during the last 50 years, carbonates were completely removed from 3.4 10 6 ha of European croplands. In carbonate free soils, annual loss of 2.1 10 7 kmol of basic cations will lead to strong acidification of at least 2.6 million ha of European croplands within the n...

Farming efficiency, cropland rental market and income effect Evidence from panel data for rural Central Vietnam verfasst von Thanh tung Nguyen, Viet Tuan Tran, Thanh tung Nguyen, Ulrike Grote Abstract Understanding the drivers and income effects of land rental markets is important to facilitate agricultural transformation.

Croplands conversion to cash crops in dry regions Consequences of nitrogen losses and decreasing nitrogen use efficiency for the food chain system verfasst von Xuechen Zhang, Bahar S.

Letter to the Editor Does acidification really increase soil carbon in croplands? How statistical analyses of large datasets might mislead the conclusions verfasst von Yakov Kuzyakov, Irina Kuzyakova, Sajjad Raza, Jianbin Zhou, Kazem Zamanian Abstract A recent meta analysis Zhang et al., 2020 stated that acidification induced by nitrogen N over fertilization increases soil organic carbon SOC accumulation.

A multiscale approach to predicting soil erosion on cropland using empirical and physically based soil erosion modells in a geographic informations system verfasst von V. Wickenkamp, Rainer Duttmann, Thomas Mosimann Organisationseinheit en Institut für Physische Geographie und Landschaftsökologie Arbeitsgruppe Physische Geographie Typ Beitrag in Buch/Sammelwerk Seiten 109 134 Publikationsdatum 2000 Publikationsstatus Veröffentlicht Pe...

By investigating grassland vs. cropland soils along a climatic gradient from forest to typical to dry steppe types of the Kulunda steppe, our study aimed to i quantify the change of OC stocks 0 60 cm after LUC from grassland to cropland as function of climate, ii elucidate the concurrent effects on aggregate stability and different functional soil organic matter OM fractions particulate vs. mineral bound OM , and iii assess c...

The simulations suggest for the entire VLC region 266 million hectares that the historic cropland expansion resulted in emissions of 1.6 10 15 g 1.6 Pg carbon between 1950 and 1965 compared to 0.6 Pg in a scenario without the expansion. From 1990 to 2100, climate change alone is projected to cause emissions of about 1.8 1.1 Pg carbon. Hypothetical recultivation of the cropland that has been abandoned after the fall of the Sov...

T Grote, U. 2022 : Internet Use, Natural Resource Extraction and Poverty Reduction in Rural Thailand , Ecological Economics 196, 107417 DOI: https://doi.org/10.1016/j.ecolecon.2022.107417 Nguyen, T.T., Tran, T., Nguyen, T T., Grote, U. 2021 : Farming efficiency, cropland rental market and income effect: Evidence from panel data for rural Central Vietnam , European Review of Agricultural Economics DOI: 10.1093/erae/jbaa013 Nguyen, T., ...

Simulation of Spectral Disturbance Effects for Improvement of Soil Property Estimation verfasst von Robert Milewski, Sabine Chabrillat, Nikolaos Tziolas, Bas Van Wesemael Abstract This study introduces the development of Spatially Upscaled Soil Spectral Libraries SUSSL approach to assess spectral disturbances caused by variations in surface conditions in remote sensing based soil property prediction. The SUSSL incorporates realistic cropla...