Root Absorptive Functions Drive Salt Accumulation in Crop Fields under Desertification

• Nomiyama Ryosuke

  Facility of Agriculture, Kyushu University

• Ebihara Kenji

  Facility of Agriculture, Kyushu University

• Takata Motoki

  Facility of Agriculture, Kyushu University

• Sakamoto Daisuke

  Facility of Agriculture, Kyushu University

• Sago Yuki

  Facility of Agriculture, Kyushu University

• Yasutake Daisuke

  Facility of Agriculture, Kochi University

• Marui Atsushi

  Facility of Agriculture, Kyushu University

• Eguchi Toshihiko

  Biotron Application Center, Kyushu University

• Mori Makito

  Facility of Agriculture, Kochi University

• Araki Takuya

  Facility of Agriculture, Ehime University

• Tagawa Kenta

  Facility of Agriculture, Saga University

• Cho Hiroyuki

  Facility of Agriculture, Saga University

• Wu Yueru

  Cold and Arid Regions Environmental and Engineering Institute

• Wang Weizhen

  Cold and Arid Regions Environmental and Engineering Institute

• Kitano Masaharu

  Facility of Agriculture, Kyushu University

Bibliographic Information

Other Title

• 砂漠化進行畑作圃場における土壌の塩類集積に対する作物の物質吸収機能の影響：異なる植物種の影響
• II. Effects of Different Plant Species

Abstract

A cropped soil column system was used to analyze water and ion dynamics in soil affected by root absorptive functions of different crop species. The respective soil columns were cropped with corn, sunflowers, beets, and frog-fruits (i.e. cover grass), where the salinized groundwater was supplied as found in the salinized crop fields under desertification. In the corn and sunflower columns, the increased transpiration of leaves and decreased Na⁺ and Cl^- absorbing Power of roots resulted in increased salt accumulation in the soil, while the major essential ions of NO₃^-, PO₄^3- and K⁺ were actively absorbed by roots and scarcely remained in the soil. In the beet and frog-fruit columns, it was considered that transpiration was low compared with the corn and sunflower columns and also soil surface evaporation was depressed by leaves growing horizontally over the soil surface. Furthermore, beet roots showed uniquely high Na⁺ and Cl^- absorbing power. These factors resulted in decreased salt accumulation in the soil of the beet and frog-fruit columns. The lowest salt accumulation occurred in the no-crop column (without leaf transpiration and root absorptive functions). These results demonstrated that the transpiration, active and selective ion absorption, and leaf morphology of different plant species have a large influence on the amount and composition of ions accumulated in the soil.

Journal

• Eco-Engineering

  Eco-Engineering 24 (3), 69-75, 2012

  The Society of Eco-Engineering

Keywords

• Desertification
• Soil salinization
• Soil surface evaporation
• Transpiration
• Root ion absorption

Details

• CRID: 1390282680167199616
• NII Article ID: 10030934526
• NII Book ID: AA12005685
• DOI: 10.11450/seitaikogaku.24.69
• ISSN: 18804500
• ISSN: 13470485
• NDL BIB ID: 023939572
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023939572
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed