Simulation of drying phenomena associated with vegetation change caused by invasion of alder (Alnus japonica) in Kushiro Mire
Simulation of drying phenomena associated with vegetation change caused by invasion of alder (Alnus japonica) in Kushiro Mire
复制标题
DOI：
10.1029/2004wr003174
复制
发表时间：
2004-08
影响因子：
5.4
通讯作者：
T. Nakayama;Masataka Watanabe
中科院分区：
文献类型：
--
作者：
T. Nakayama;Masataka Watanabe
开发了一种新的基于过程的分布式模型，即国家环境研究所（NIES）集成的基于流域的生态水文学（NICE）模型。该模型包括表面非饱和饱和水过程和同化陆面过程，描述了中分辨率成像光谱仪（MODIS）卫星数据的物候变化。该模型被应用到钏路河流域（北方日本，面积2204.7平方公里）的分辨率为500米，8天平均植被变化。通过考虑植被物候、土壤特性和地质结构，在6个月无雪期内，土壤温度、土壤湿度、地下水位和河流流量的模拟值和测量值之间具有很好的一致性。该模型解释了水循环的变化和干燥现象在钏路沼泽与植被变化所造成的泥沙负荷增加，由于河流渠化，从而入侵的桤木（Alnus japonica）到沼泽。
A new process‐based distributed model, the National Institute for Environmental Studies (NIES) integrated catchment‐based ecohydrology (NICE) model, was developed. The model includes surface‐unsaturated‐saturated water processes and assimilates land‐surface processes describing the variation in phenology with Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data. The model was applied to the Kushiro River catchment (northern Japan, area of 2204.7 km2) with a resolution of 500 m and 8 days averaged vegetation changes. Excellent agreement between simulated and measured values was obtained for soil temperature, soil moisture, groundwater level, and river flow discharge during the 6 month snow‐free period, achieved by taking into account vegetation phenology, soil properties, and geological structure. The model explains water cycle change and drying phenomena in the Kushiro Mire associated with vegetation change caused by the increased sediment load due to river channelization and consequently the invasion of alder (Alnus japonica) into the mire.