Assessment of Ecosystem Water Conservation Value In The Beijing Four Seasons Flower Valley

Xiao-Na Liu,Hong Li,T Gong,T Yang,J Xu

doi:10.1051/itmconf/20160709018

Abstract

Based on the data of field investigation and multi-source data analysis, Beijing Four Seasons Flower Valley declared in 2008 towards valley economy water conservation function and value was estimated by means of rainfall storage capacity as well as ecological economy. The results showed that: Landscape structure of FSFV was forest land-cultivated land-grassland. FSFV had the highest water conservation function in Beijing valleys, with the capacity of 1101.13 m3/hm2. Annual total amount of water conservation was 31.20×106 m3, accounting for 10.07% of Beijing valleys, and the total value of water conservation was 3.61×108 Yuan. High water conservation capacity areas were mainly located in the eastern mountainous region with broadleaf forest centralized distribution. Low water conservation function areas were mainly occurred in the regions effected by human activities. Forest ecosystem had the highest capacity of water conservation of 1116 m3/hm2, while construction ecosystem had the lowest. Higher degree of human activities, lower capacity of water conservation. Shrub forest and broadleaf forest had the largest contribution on valley water conservation, with contribution rate of 36.35% and 35.62%. Ranking of water conservation capacity, broadleaf forest had the highest value of 1135 m3/hm2, followed by coniferous forest, shrub forest and mixed forest.

Highlights

With climate change and rapid socio-economic development, water demand is raising gradually and water environment is deteriorating sharply
Four Seasons Flower Valley (FSFV) has high vegetation coverage over 80%, which means that water conservation function is the vital ecosystem service in this valley
The water conservation capacity of FSFV in 2013 was 1101.13 m3/hm2, amount to 21.25% of annual average rainfall, higher than the capacity of overall mountainous valleys (1016.66 m3/hm2), which pointed that FSFV had the highest water conservation function in Beijing valleys

Summary

Introduction

With climate change and rapid socio-economic development, water demand is raising gradually and water environment is deteriorating sharply. As ecological conservation area of the national capital, Beijing’s mountainous area is the natural ecological barrier, water conservation region and bearing capacity of biodiversity. Restricted by tough geographical and natural conditions, it is the region with economic underdevelopment. With the strength of human activities increasing, such as urbanization, industrialization and agricultural intensification, ecological environment and natural resources are faced with tremendous development pressure in those mountainous areas, such as mining, soil erosion, and destruction of vegetation. The contradiction between socio-economic development and ecological environment protection becomes relative prominent and acute, which prompting the gap between urban and rural significantly [1,2]

Methods

Results

Conclusion