首页|基于In-VEST模型的汉江上游森林生态系统水源涵养服务功能研究

基于In-VEST模型的汉江上游森林生态系统水源涵养服务功能研究

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生态系统服务功能及变化是生态系统评估的核心,是生态学、环境经济学等领域的研究热点.汉江上游秦巴山地是中国重要的水源涵养和供给功能区.近年来,受自然与人为双重驱动因子影响,森林生态系统出现退化现象,水源涵养及供给能力受到一定影响.以汉江上游流域森林景观为研究对象,运用In-VEST模型水源涵养模块对其水源涵养功能进行动态变化分析.结果表明,汉江上游森林生态系统水源涵养总量为1.21×1014 m3,最大涵养水源深度为362.51 mm,平均水源涵养深度为80.69 mm.在各森林景观中,常绿阔叶林水源函养量最大,乔木园地最小.在空间上,南北秦巴山地地区水源涵养量较大,水源涵养服务功能明显.
Research on Water Conservation Service Function of Forest Ecological System in Upstream of Hanjiang River Based on In-VEST Model
Ecosystem service function is the core of ecosystem evaluation and research hotspot of ecology/environmental economics.Qinling-Bashan Mountains which lies to the upstream of the Hanjiang River is one of the important water supplying and conserving area for China.In recent years,the degradation of forest ecosystem and the capacity of water supplying and conserving in the area have been restricted by both of the natural and human being factors.The dynamic changes of water conservation founction in the Upper Hanjiang River were analyzed by making use of In-VEST model.The results showed that the amount of water conservation of forest ecosystem in the upstream of Hanjiang River was 120.79× 1014 m3 meters,The maximum depth of water conservation was 362.51 millimetres,the average depth of water conservation was 80.69 millimetre.The water conservation evergreen broad-leaved forest was the largest compared with other forest landscape,and the tree garden was the least.From the perspective of space,the amount of water conservation in north and south of Qinlig-Bashan Mountains area was larger,and water conservation function was obvious.

forest ecological systemwater conservation functionIn-VEST modelupstream of Hanjiang River

王纪伟、刘康、瓮耐义

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西北大学城市与环境学院,陕西西安710054

森林生态系统 水源涵养 In-VEST模型 汉江上游

西北大学研究生自主创新基金全国生态十年变化遥感调查与评估项目

YZZ12005STSN-05-27

2014

水土保持通报
中国科学院水利部水土保持研究所 水利部水土保持监测中心

水土保持通报

CSTPCDCSCD
影响因子:0.658
ISSN:1000-288X
年,卷(期):2014.34(5)
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