Modeling effects of abiotic and anthropogenic factors to rice production

A case study in Sapa District, Lao Cai Province, Vietnam

authored by

Dang Kinh Bac, Benjamin Burkhard

Abstract

The famous terraced rice ecosystem in the mountainous areas as Sapa of northern Vietnam has expanded with unstable productivity over generations. However, the question arises of how natural and human conditions on terraces can boost the quality of rice provisioning ecosystem service supply with rice yields as an indicator. The study used a semi-structured interview method, the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) tool and general linear models to investigate the influence of natural and human-derived components on the rice provisioning service at six villages. The results showed that along with the importance of applying a fertilizer-based system in the terraced rice ecosystem, topology- and hydrology-based systems have been influencing significantly on water and nutrient supply for irrigation on terraced rice fields. Moreover, analyzing the natural components has been considered more efficient than human-derived components for a sustainable rice ecosystem. The results indicated that the high potential of rice provisioning service supply had found at the downstream of Ta Van sub-catchment and the Vu Lung Sung village where the distance from paddy fields to sinks or outlet of streams is lower than five kilometers. The last result of the synthetic model proving 74.28 percent of deviance of terraced rice production did not avoid many noises in collecting and standardizing data that also discuss in this study.

Organisation(s)

Institute of Physical Geography and Landscape Ecology
Physical Geography Group

External Organisation(s)

Vietnam National University
Leibniz Centre for Agricultural Landscape Research (ZALF)

Type

Article

Journal

Vietnam Journal of Earth Sciences

Volume

42

Pages

41-54

No. of pages

14

ISSN

2615-9783

Publication date

15.01.2020

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Earth and Planetary Sciences(all)

Sustainable Development Goals

SDG 2 - Zero Hunger

Electronic version(s)

https://doi.org/10.15625/0866-7187/42/1/14757 (Access: Open)