ISLSCP II Total Plant-Available Soil Water Storage Capacity of the Rooting Zone

This data set provides two estimates of the geographic distribution of the total plant-available soil water storage capacity of the rooting zone ("rooting zone water storage size") on a 1.0 degree global grid. Two inverse modeling methods were used. The first modeling approach (optimization) was based on the assumption that vegetation has adapted to the environment such that it makes optimum use of water (Kleidon and Heimann 1998). The second method (assimilation) was based on the assumption that green vegetation indicates sufficient available water for transpiration (Knorr 1997). The data set was developed to provide alternative means to describe rooting characteristics of the global vegetation cover for land surface and climate models in support of the ISLSCP Initiative II data collection. There are three files in this data set.

本数据集提供了全球1.0度网格上根系区总土壤有效水分储存容量（根系区水分储存量）的两种估计值。该数据集采用了两种逆模型方法。第一种建模方法（优化）基于植被已适应环境的假设，即植被能够最大限度地利用水分（Kleidon and Heimann 1998）。第二种方法（同化）基于绿色植被表明有足够水分可供蒸腾作用的假设（Knorr 1997）。该数据集的开发旨在为支持ISLSCP Initiative II数据收集，为地表和气候模型提供描述全球植被覆盖根系特性的替代途径。该数据集包含三个文件。