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本文采用集水区技术和定位研究方法，利用１９８９年５月至１９９３年４月４ａ的观测资料，对海南岛尖峰岭热带山地雨林天然更新林的水量平衡及主要养分的地球化学循环规律进行了分析。结果指出：该森林生态系统年降雨输入为２９１１．０ｍｍ，其中７．０６％以树干茎流形式进入林地，林内穿透雨占７８．８８％，另外１４．０６％被林冠截留损失；以径流形式流出该系统的水量为１５１４０．６ｍｍ，占年降雨量的５２．９２％，其中快速径流和基流分别占总径流的２２．１４％和７７．８６％；系统另一输出项为蒸散，计算为１３７０．６ｍｍ，为年降雨量的４７．０８％。在该森林生态系统中，Ｎ、Ｐ、Ｋ、Ｃａ、Ｍｇ、Ｓｉ、Ａｌ、Ｍｎ等养分随降雨输入的量分别为１４．４３、０．５６、４．１９、５３．０３、７．４１、５．２１、０．８２和０．０５６ｋｇ／ｈｍ２·ａ，通过冠层后的淋溶量（含树干淋洗）分别为３．６７、０．５０、５０．１８、－９，１４、８．６１、１４．２６、１．０５和１．３３４ｋｇ／ｈｍ２·ａ，这些养分以径流形式流出该系统的量分别为８．．３５、０．３８、３３．６１、４０．２６、６．１７、１３３．０８、１．６９和０．０７５ｋｇ／ｈｍ２·ａ。
Based on the observation data collected from May 1989 to April 1993,4 a, watershed technique and orientation study were used to study the water balance and the main nutrient cycling rules in the natural regeneration forest of the tropical mountain rainforest in Jianfengling, Hainan Island analysis. The results showed that the annual rainfall input of the forest ecosystem was 2911.0 mm, of which 7.06% entered the forest land with the trunk stem flow, with 78.88% penetrating rain in the forest and 14.06% losing the canopy. The amount of water flowing out of the system was 15140.6 mm, accounting for 52.92% of the annual rainfall, of which the rapid runoff and base flow accounted for 22.14% and 77.86% of the total runoff respectively. Another output of the system was evapotranspiration, Calculated as 1370.6mm, 47.08% of the annual rainfall. In the forest ecosystem, the amount of N, P, K, Ca, Mg, Si, Al, Mn and other nutrients input with rainfall were 14.43,0.56,4.19,53.03,7.41 , 5.21,0.82 and 0.056kg / hm2 · a respectively. The amount of leaching (including trunk leaching) through the canopy were 3.67,0.50,50.18, -9,14, 8.61, 14.26, 1.05 and 1.334 kg / hm2.a, respectively, and the amount of these nutrients flowing out of the system as run-off was 8 respectively. . 35, 0.38, 33.61, 40.26, 6.17, 133.08, 1.69 and 0.075 kg / hm2.a.