求翻译：外部气候条件评价值除在第19~23个样本区间内变化较剧烈外，总体变化不大，究其原因，主要是因为这几个样本所研究的地域年平均气温较高，且坡度也较其他研究区域稍大是什么意思？

Evaluation value of the external climatic conditions apart from the more severe changes in the range of 19 to 23 samples, the overall change little reason, mainly because of geographical research in these samples a higher average temperature, and the slope than other study region is slightly larger

The external climate conditions in the first 19 values in addition to 23 sample interval changes within a more intense, overall there was little change, the main reason for this is because the number of samples in the study area in the annual mean temperature gradient is high, and is also slightly l

Exterior climatic conditions appraisal value besides changes fiercely in the 19~23rd sample sector, the overall change is not big, investigates its reason, mainly is because these samples study the region annual mean temperature is high, also slope also other study the region to be slightly big

Assessing value in addition to external weather conditions outside the di19~23ge sample interval change more dramatic, the overall change is unlikely, the reasons, mainly because the samples studied regional annual average high temperatures, and the slope is slightly larger than the other regions

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