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| Rev 720 | Rev 723 | ||
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| Line 124... | Line 124... | ||
| 124 | mCanopyConductance += rus->species()->canopyConductance() * lai; // weigh with LAI |
124 | mCanopyConductance += rus->species()->canopyConductance() * lai; // weigh with LAI |
| 125 | }
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125 | }
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| 126 | double total_lai = mLAIBroadleaved+mLAINeedle; |
126 | double total_lai = mLAIBroadleaved+mLAINeedle; |
| 127 | 127 | ||
| 128 | // handle cases with LAI < 1 (use generic "ground cover characteristics" instead)
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128 | // handle cases with LAI < 1 (use generic "ground cover characteristics" instead)
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| - | 129 | /* The LAI used here is derived from the "stockable" area (and not the stocked area).
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| - | 130 | If the stand has gaps, the available trees are "thinned" across the whole area. Otherwise (when stocked area is used)
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| - | 131 | the LAI would overestimate the transpiring canopy. However, the current solution overestimates e.g. the interception.
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| - | 132 | If the "thinned out" LAI is below one, the rest (i.e. the gaps) are thought to be covered by ground vegetation.
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| - | 133 | */
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| 129 | if (total_lai<1.) { |
134 | if (total_lai<1.) { |
| 130 | mCanopyConductance+=(ground_vegetationCC)*(1. - total_lai); |
135 | mCanopyConductance+=(ground_vegetationCC)*(1. - total_lai); |
| 131 | total_lai = 1.; |
136 | total_lai = 1.; |
| 132 | }
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137 | }
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| 133 | mCanopyConductance /= total_lai; |
138 | mCanopyConductance /= total_lai; |