“Groundwater Governance: A Global Framework for Action”-Fourth Regional Consultation: Asia and Pacific Region

Coupling mechanism and evaluation system among groundwater, environment and social economy in (No.

Groundwater 973 2010CB428805)Project Supporting by MOST Xianfang SONG

Key Lab. of Water Cycle & Related Land Surface Processes, The Institute of Geographic Sciences and Natural Resources Research (IGSNRR) Chinese Academy of Sciences (CAS)

3–5 December 2012 Institute of Hydrogeology and Environmental Geology (IHEG) , China North China Plain

Broad sense Huang-Huai-Hai Plain Narrow sense Plain

Population: 0.437 billion, 35% of whole China. GDP: 386 billion US$ , 32% of whole China Irrigation area: 42% of whole China (0.346 B Mu )Agricultural Product : 40% of whole China The Objectives of the Project

Understand evolution of the groundwater regime and groundwater resources to environmental changes Investigate the feedback mechanism between the ecological system and the groundwater system Analyze the interaction among groundwater exploitation, environmental changes, and economic development Establish an assessment system and evaluation methods for groundwater resources carrying capacity

Water resources system

Resource function

Groundwater system Research Methods u Using Multi-information Observation, experiments,anysis u Build an integrated simulation system to achieve - environment - the economic process the cognitive evolution of groundwater - the environment - the economy of the three systems u Combined with the efficient use of water resources and the optimal allocation theory, Put forward the groundwater resource bearing capacity evaluation system in the North China Plain Research Content

Mechanism of groundwater circulation and water resources change to environmental change Crossfeed mechanism between groundwater resources and eco-hydrology Interaction and the coupling mechanism among groundwater development, environmental change and economic development Evaluation system and evaluation model groundwater resources carrying capacity in the North China Plain Progress in research 1. Data collection, site investigation and laboratory analysis

n Collected groundwater level data、city population、GDP、 industrial and agricultural development statistics for 50 years n Soil water monitoring at , typical area (Gaocheng, Hengshui, Cangzhou) agricultural water consumption regularity positioning monitoring test, n Seawater intrusion survey at n Land subsidence survey at Tanggu, n Renewable water in n Field samplimg in the Baiyangdian Basin Progress in research 2. Interaction mechanism between ecology and groundwater

n Determine agricultural water irrigation quota according to the Statistics and effective irrigation of agricultural water around the area, from the macro to clarify the similarities and differences of the the piedmont plains to the coastal region irrigation quota n Analysis of the characteristics of the different soil types n Clarify the historical evolution of the wetland area and its relationship with the groundwater Progress in research 3. The relationship between groundwater and socio-economic development

n Clarify the relationship between economic growth and changes in the groundwater for the past 50 years n Analysis of the economic and groundwater changes in the difference between the typical regional groundwater pillar industries supporting role

Others Transfer from the 1% Yellow River 10%

Surface water 23% Groundwater 66% Progress in research 4. Interaction among groundwater - environment - economic n Systematic analysis of groundwater exploitation, and environmental problems caused by the economic development in the study area

(seawater intrusion, land subsidence, and soil salinization) n Interaction between the reclaimed water and groundwater Progress in research 5. groundwater carrying capacity model and evaluation system

n Preliminary proposed the groundwater carrying capacity evaluation index system based on the principle of system dynamics n Constructed the groundwater carrying capacity evaluation model in typical urban agglomeration (Beijing-Tianjin- region) to be applied