[1]GUO Lianfa,LAI Quan,YI Boli,et al.Spatiotemporal Changes of Net Primary Productivity of River Wetland and Its Driving Factors in Hulun Buir Sandy Land in 2000-2014[J].Research of Soil and Water Conservation,2017,24(06):267-272.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 06
Page number:
267-272
Column:
Public date:
2017-11-24
- Title:
-
Spatiotemporal Changes of Net Primary Productivity of River Wetland and Its Driving Factors in Hulun Buir Sandy Land in 2000-2014
- Author(s):
-
GUO Lianfa1, LAI Quan1,2, YI Boli1, YIN Shan1
-
1. School of Geographical Sciences, Inner Mongolia Normal University, Hohhot 010022, China;
2. Key Laboratory of Remote Sensing and Geographic Information, Inner Mongolia Normal University, Hohhot 010022, China
-
- Keywords:
-
net primary productivity; temporal and spatial variation; driving force analysis; river wetland
- CLC:
-
TP79
- DOI:
-
-
- Abstract:
-
Net primary productivity (NPP) can directly reflect the production capacity of the vegetation in the natural environment. the NPP of River Wetland in Hulun Buir sandy land on air changes and driving force were analyzed using the data of temperature and precipitation and combining with remote sensing images, simple difference method and trend analysis and linear regression. The results showed that:considering the time, the sandy land in Hulun Buir River Wetland NPP presented the fluctuant growth, NPP growth in the area of wetland accounted for up to 92.51% of area, the annual growth rate was between 0~2 gC/(m2·a); with respect to the space, NPP presented the distribution of the east high west low; during the 15 years, the wetland with fastest growing NPP is in Western Herlen wetland with growth area of up to 99.5%; climate change and human activities are two important factors that lead to the changes of NPP, NPP is significantly correlated with the increase of precipitation (R=0.703), negatively correlated with temperature(R=-0.559). The change of the economic industrial structure makes the pressure of human activities on the ecological environment decrease, which leads to the increase of NPP. At the same time, the national policy and the sand control project also affect the change of NPP.