Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79240
Title: Use of nutrient medium technique for vegetation restoration in Karst region of Southwest China
Authors: Wu, F 
Liu, CW 
Chen, HK
Diao, ZF
Zhao, S
Xie, H
Keywords: Karst rocky desertification
Vegetation restoration
Nutrient medium technique
Water retention
Field experiment
Issue Date: 2018
Publisher: Taylor & Francis
Source: Journal of integrative environmental sciences, 16 May 2018, v. 15, no. 1, p. 139-159 How to cite?
Journal: Journal of integrative environmental sciences 
Abstract: Karst rocky desertification (KRD) is a global environmental degradation problem caused by human activities and vegetation deterioration. Vegetation restoration in KRD is very difficult due to severe water loss, soil erosion and extensive bare bedrock. For achieving vegetation restoration on bare bedrock areas of KRD, the nutrient medium technique was developed, which is based on the special hydro-geological conditions that is seasonal rainfall is abundant in Karst region of Southwest China and limestone fissures are extremely developed and rich in fissure water. The objective of this research is to investigate the feasibility of using nutrient medium technique to achieve vegetation restoration in KRD region. Through the indoor and field experiments, some properties of the nutrient medium mixture were tested, including water retention, water absorption and nutrient retention. The results showed that the moisture content on the 75th day and water absorption rate of No.2 mixture was 19.9% and 1.67mm/d, respectively, which could be used as optimum mix ratio for producing nutrient medium. The field results showed that the nutrient medium technique could effectively guarantee the survival of sapling at early age and sustainable growth at later age in the field, and the nutrient medium had less nutrient loss. This novel approach can retain and absorb moisture, and saplings do not need artificially supply water and fertiliser in the dry season, and the use of nutrient medium technique to achieve vegetation restoration in KRD region seems to be a feasible option.
URI: http://hdl.handle.net/10397/79240
ISSN: 1943-815X
EISSN: 1943-8168
DOI: 10.1080/1943815X.2018.1471725
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