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Volume 9
Journal of Earth Science & Climatic Change
Natural Hazards Congress 2018
July 26-27, 2018
July 26-27, 2018 Melbourne, Australia
2
nd
International Conference on
Natural Hazards and Disaster Management
Sustainable management of ecosystem and control of natural secondary disaster in soil and water
loss regions
Zhongsheng Guo
National Science Fund of China, China
Statement of the Problem:
High-yield and high-benefit plantation forest can effectively conserve soil and water loss and
improve ecological environment. But currently, soil desiccation, a natural secondary disaster, often occurs and sometime
changes into severe desiccation, which causes soil degradation, vegetation decline and death, which does not benefit ecosystem
sustainable management and soil and water conservation in the soil and water loss regions.
Methodology & Theoretical Orientation:
The changes of soil water, soil water supply or soil water consumption in the soil
profile with plant growth and planting density was investigated at the same condition. The relationship between soil water and
plant growth and the relationship between soil water supply or soil water consumption and plant density was analyzed.
Findings:
SWRULP is the soil water storage in the Maximum Infiltration Depth (MID) in which the soil water content in
every soil layers equal to wilting coefficient which changes with soil depth. SWCCV is the maximum plant population quantity
or plant density of the indicator species in a plant community when the Soil Water Supply (SWS) is equal to Soil Water
Consumption (SWC) in the root zone in a least death day of indicated plant. Indicator plant is the constructive species for
natural vegetation or the principal or purpose species of trees or grasses for plantation. SWCCV changes with plant community,
site condition and climate change, such as temperature, wind and rainfall.
Conclusion & Significance:
Regulating the relationship between plant growth and soil water at the appropriate time on
SWCCV enable ecosystem sustainable management and control of natural secondary disaster in the soil and water loss regions.
zhongshenguo@sohu.comJ Earth Sci Clim Change 2018, Volume 9
DOI: 10.4172/2157-7617-C2-043