Crop and Resource-based Dynamic Irrigation Thinking to Respond to Climate Change
Journal
Taiwan Water Conservancy
台灣水利
Journal Volume
68
Journal Issue
4
Pages
1-9
Date Issued
2020-12-01
Author(s)
Abstract
Climate variation affects water availability and crop-water demand differently at a local and global scale. Accordingly, current irrigation approaches should change to respond to climate variation to enhance future water and food security. Crop resource-based irrigation thinking is one of the adaptation technologies, which may be efficient for responding to climate change. In this editorial, we review and propose a crop resource-based thinking irrigation approach, which is referred to as RICE, to reduce risk (R), increase income (I), enhance cropping (C), and increase irrigation efficiency (E). The RICE approach incorporates current and future environmental conditions and cropping patterns and suggests crop rotation and inter-cropping systems depending on water availability and demand. Therefore, an update in existing irrigation and cropping patterns is compulsory to reduce the challenges from increased water requirements under different climate change conditions. The proposed approach can be further improved by taking the dynamics of cultivation, variety choice, water-saving techniques, and breeding into account in a decentralized irrigation system consists with suitable dynamic irrigation units.
氣候變異在地區尺度及全球尺度對於水資源可用性及作物需水量有不同程度之影響，因此需改變現行之灌溉方式以反應氣候的變異，以確保未來之水資源及糧食安全。考量作物本體的灌溉思維是可能有效解決氣候變遷所產生影響的調適策略之一。在這篇文章中，我們回顧並提出了一種以降低風險（R）、增加收入（I）、增強耕作（C）及提高灌溉效率（E）之以作物為主體思維灌溉方式（RICE）。RICE方法結合了目前及未來的環境情況及耕作方式並依據可用水量及需水量提出輪作及間作制度之建議。據此，可更新現有之灌溉及耕作系統以降低不同氣候變遷情境下對於需水量增加所帶來的挑戰。而在適宜的動態灌溉單元中考量去中心化的灌溉系統，並納入種植的動態、品種選擇、節水技術及育種的思維，將可進一步強化本文所提出之方法。
Subjects
Climate change;| Crop resource-based; Crop rotation; Cropping; Decentralized irrigation system; Irrigation; irrigation thinking
耕作
灌溉
氣候變遷
考量作物本體的灌溉思維
輪作
去中心化的灌溉系統
Type
journal article