Seaweed Bed and Marine Desertification Control

2021 ◽  
Keyword(s):  
Desertification Control ◽  
Seaweed Bed

scholarly journals Effects of the Seaweed Bed Construction Using the Mixture of Steelmaking Slag and Dredged Soil on the Growth of Seaweeds

2011 ◽  
Vol 51 (11) ◽  
pp. 1919-1928 ◽  
Author(s):  
Akio Hayashi ◽  
Hirokazu Tozawa ◽  
Katsuya Shimada ◽  
Katunori Takahashi ◽  
Ryoko Kaneko ◽  
...  
Keyword(s):  
Steelmaking Slag ◽  
Dredged Soil ◽  
Seaweed Bed

scholarly journals STUDY ON THE SEAWEED BED FORMATION BY ABRASION OF BLOCK SURFACE CAUSED BY SUSPENDED SEDIMENT

2002 ◽  
Vol 18 ◽  
pp. 419-424
Author(s):  
Masabumi SETO ◽  
Takeyasu NAKAYAMA ◽  
Hiroshi MIZUGUCHI ◽  
Shinichi TABATA ◽  
Ziro SAITO
Keyword(s):  
Suspended Sediment ◽  
Seaweed Bed

scholarly journals Desertification Control Practices in China

2020 ◽  
Vol 12 (8) ◽  
pp. 3258
Author(s):  
Yanli Lyu ◽  
Peijun Shi ◽  
Guoyi Han ◽  
Lianyou Liu ◽  
Lanlan Guo ◽  
...  
Keyword(s):  
Water Conservation ◽  
Anthropogenic Activities ◽  
Northern China ◽  
Global Scale ◽  
Lessons Learned ◽  
Dust Storms ◽  
Arid Ecosystems ◽  
Desertification Control ◽  
The Impact ◽  
Semi Arid

Desertification is a form of land degradation principally in semi-arid and arid areas influenced by climatic and human factors. As a country plagued by extensive sandy desertification and frequent sandstorms and dust storms, China has been trying to find ways to achieve the sustainable management of desertified lands. This paper reviewed the impact of climate change and anthropogenic activities on desertified areas, and the effort, outcome, and lessons learned from desertification control in China. Although drying and warming trends and growing population pressures exist in those areas, the expanding trend of desertified land achieved an overall reversal. In the past six decades, many efforts, including government policies, forestry, and desertification control programs, combined with eco-industrialization development, have been integrated to control the desertification in northern China. Positive human intervention including afforestation, and the rehabilitation of mobile sandy land, and water conservation have facilitated the return of arid and semi-arid ecosystems to a more balanced state. China’s practices in desertification control could provide valuable knowledge for sustainable desertified land management on a global scale.

scholarly journals The challenge and future of rocky desertification control in karst areas in southwest China

Solid Earth ◽  
2016 ◽  
Vol 7 (1) ◽  
pp. 83-91 ◽  
Author(s):  
J. Y. Zhang ◽  
M. H. Dai ◽  
L. C. Wang ◽  
C. F. Zeng ◽  
W. C. Su
Keyword(s):  
Southwest China ◽  
Scientific Research ◽  
Lessons Learned ◽  
Dynamic Monitoring ◽  
Chinese Government ◽  
Second Phase ◽  
Karst Rocky Desertification ◽  
Ecological Compensation ◽  
Rocky Desertification ◽  
Desertification Control

Abstract. Karst rocky desertification occurs after vegetation deteriorates as a result of intensive land use, which leads to severe water loss and soil erosion and exposes basement rocks, creating a rocky landscape. Karst rocky desertification is found in humid areas in southwest China, the region most seriously affected by rocky desertification in the world. In order to promote ecological restoration and help peasants out of poverty, the Chinese government carried out the first phase of a rocky desertification control project from 2006 to 2015, which initially contained the expansion of rocky desertification. Currently, the Chinese government is prepared to implement the second phase of the rocky desertification control project, and therefore it is essential to summarise the lessons learned over the last 10 years of the first phase. In this paper, we analyse the driving social and economic factors behind rocky desertification, summarise the scientific research on rocky desertification in the region, and finally identify the main problems facing rocky desertification control. In addition, we put forward several policy suggestions that take into account the perspective of local peasants, scientific research, and China's economic development and urbanisation process. These suggestions include promoting the non-agriculturalization of household livelihoods, improving ecological compensation, strengthening the evaluation of rocky desertification control and dynamic monitoring, and strengthening research on key ecological function recovery technologies and supporting technologies.

Sponges associated withSargassumspp. (Phaeophyceae: Fucales) from the south-western Gulf of California

2009 ◽  
Vol 90 (1) ◽  
pp. 193-202 ◽  
Author(s):  
E. Ávila ◽  
N.I. Blancas-Gallangos ◽  
R. Riosmena-Rodríguez ◽  
L. Paul-Chávez
Keyword(s):  
Gulf Of California ◽  
Brown Seaweed ◽  
Growth Period ◽  
Temporal Variations ◽  
Growth Patterns ◽  
Sponge Species ◽  
Preliminary Assessment ◽  
Temporal And Spatial ◽  
Abundance And Diversity ◽  
Seaweed Bed

This study constitutes a preliminary assessment of the abundance and species richness of sponges living on the brown seaweedSargassumspp. from the southern Gulf of California (Mexico). The diversity and abundance of sponges associated withSargassumwas investigated from November 2006 to November 2007. In addition, it was examined whether temporal variations in the abundance of associations were influenced by changes in size and density ofSargassumas well as environmental factors such as water temperature and salinity. Twelve sponge species (4 Haplosclerida, 3 Poecilosclerida, 4 Dictyoceratida and 1 Clathrinida) were found growing epiphytically on the lower portions ofSargassumplants and the most frequent species wereCallyspongia californicaandHaliclona turquoisia(38% and 27%, respectively). The abundance of associations showed significant temporal and spatial variations, being higher from June to November (postSargassumgrowth period), at depths from 0.5–2.5 m. The number of sponge species m−2(both epiphytic and non-epiphytic) inside the seaweed bed was 4.8 species m−2, while outside it, the absence of hard substrate for attachment severely restricted the number of sponges. These results suggest thatSargassumprovide substratum and habitat for the sponge community from this region, and that their seasonal growth patterns may influence the abundance and diversity of the associations.

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