Transformations of Social-Ecological Systems
Transformations of Social-Ecological Systems
复制标题
社会生态系统的转变
DOI:
--
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
J. Helgeson
中科院分区:
文献类型:
--
作者:
Tetsu Sato;I. Chabay;J. Helgeson
This chapter introduces a case study focused on the problem of groundwater depletion resulting from the use of modern irrigated agriculture in an arid region that relies on groundwater, along with initiatives that have been made to address the problem. It became apparent, as a result of interaction with a diverse range of stakeholders, that local environmental knowledge possessed by pickling melon farmers and rain fed wheat farmers – groups of people that could be described as the socially vulnerable in the region studied in this chapter – has the potential to open up new markets as well as reduce the pressures on consumption of groundwater resources. The authors discovered that this local environmental knowledge connected with agriculture that is founded on the traditions and cultures of the socially vulnerable could help solve a series of regional issues caused by large scale modern irrigated agriculture which is run by farmers described as the socially privileged. As described in this chapter, the authors utilized a transdisciplinary approach in cooperation with a diverse range of stakeholders to visualize the problems at hand and to uncover and catalog local environmental knowledge, the content of which forms a story for solving local issues and creating a new history. 2.1 The Depletion of Groundwater 2.1.1 Global Situation Surrounding Groundwater Fresh water makes up only around 2.5% of the world’s water, with the remaining 97.5% consisting of salt water (Shiklomanov and Rodda 2003). It is said that of this fresh water, approximately 30% is groundwater, equivalent to somewhere in the T. Kume (*) Ehime University, Matsuyama, Japan e-mail: kume@ehime-u.ac.jp E. Akça Adiyaman University, Adiyaman, Turkey © Springer Nature Singapore Pte Ltd. 2018 T. Sato et al. (eds.), Transformations of Social-Ecological Systems, Ecological Research Monographs, https://doi.org/10.1007/978-981-13-2327-0_2 11 region of 0.75% of the total amount of water globally. Around 70% of fresh water resources are used for agricultural purposes. The world’s irrigated agricultural land covers about 300 million ha, of which an estimated 38% is irrigated using groundwater, and that an annually 545 km of groundwater is used for this purpose (Siebert et al. 2010). Globally speaking, Japan experiences comparatively large volumes of rainfall and has a humid climate, which is why it also has comparatively large volumes of groundwater recharge, in the region of 350–400 mm per year (statistics taken from Editing Committee for the Revised Groundwater Handbook 1980). However, in arid regions, which have very low rainfall volumes of only 300 mm per year, the volumes of groundwater recharge are almost zero. 2.1.2 Irrigated Agriculture and the Problem of Groundwater Depletion From this perspective, irrigated agriculture, which utilizes groundwater, needs to be conducted in a way which pays extra care to storage volumes and recharge volumes, something which is particularly vital in arid regions. In arid regions, which have plentiful solar radiation and vast land areas, production volumes can easily be increased and farmers are able to enjoy a good livelihood through the introduction of irrigation, heavy machinery and chemical fertilizers. As a result, groundwater supplies are continually under use, pushing these regions ever closer to the threat of groundwater depletion. Arid regions that rely on groundwater can be found around the world. Groundwater depletion is an environmental problem that causes social issues in the form of the transformation and collapse, not only of sustainable agriculture in the area, but also local communities themselves. Also, if groundwater becomes depleted, the vast tracts of land that had once been covered in crops become exposed to the elements; if this situation continues in the long run, it can lead to increased damage from wind erosion (Akça et al. 2015). The end result of this is desertification and the supply of dust particles into the atmosphere like yellow sand, and the various environmental issues which exist in different areas come to symbolize global environmental problems with a reach extending throughout the planet. This chapter examines the problems associated with groundwater depletion faced by arid regions with large scale irrigated agriculture that rely 100% on groundwater, along with the content of initiatives that have been made to address the problems through dialog with a diverse range of local stakeholders. It describes how two different minor forms of agriculture, the practitioners of which could be described as the socially vulnerable, encountered during this research have the potential to solve these problems. Based on this, it goes on to discuss the knowledge base gained from such forms of agriculture and the utilization of this in an attempt to shift to types of agriculture in arid regions that do not rely on groundwater alone. 12 T. Kume and E. Akça