Climate change directly alters climate conditions and indirectly impacts land suitability for cultivating rubber. The Malaysian tropical rainforest climate with regular rainfall of about 2000–2500 mm per year and the average temperature of 26–28 °C provide a suitable condition for planting rubber commercially. There is doubt about how well rubber plants will perform in the future because of climate change. The main question of whether rubber is still appropriate for planting in Peninsular Malaysia must be answered conclusively as rubber requires an approximately 30 year investment in one cycle. This question is particularly relevant in Malaysia as its rubber production is dependent on smallholders. Smallholders contribute approximately 93% of natural rubber production and furthermore, 93% of the rubber land area in Malaysia is owned by smallholders. An agroclimatic map produced in this study will help smallholders in deciding whether to proceed with rubber or change to other valuable crops based on their specific location. In this study, we evaluate 21st century land suitability for cultivating rubber and assess its growth based on climatic data for the Historical (1970–2000), Early (2010–2040), Middle (2040–2070) and End (2070–2100) projections periods. We use the Hevea 1.0 static model for rubber tree modelling to calculate the agroclimatic indices and estimate 30 years’ of actual rubber growth (girth) for all study periods. We find that climate change is predicted to have a positive impact on rubber-suitability in tropical rainforest in Malaysia climates at least until 2100. The End period, where the precipitation and temperature are projected to experience significant increases, becomes more favourable to rubber. The Perak region shows the highest increase in estimated rubber growth in the Early, Middle, and End periods by 16.3%, 31.9% and 39.4%, respectively. Among all regions, Kelang is predicted to be the most suitable area to plant rubber during the Early period as it has a potential estimated girth of up to 94.5 cm. Meanwhile, Johor is predicted to be the best place to cultivate rubber during the Middle and End periods with growth estimations of 97 cm and 99.5 cm, respectively. We indicate that about 32% of existing planted rubber area in Peninsular Malaysia is in Class 6 of land suitability to cultivate rubber.

气候变化直接改变气候条件，并间接影响土地耕种橡胶的适宜性。马来西亚热带雨林气候，每年定期降雨约2000–2500 mm，平均温度为26–28°C，为商业种植橡胶提供了合适的条件。人们怀疑，由于气候变化，橡胶厂未来的表现如何。橡胶是否仍然适合在马来西亚半岛种植的主要问题必须得到最终回答，因为橡胶需要在一个周期内进行大约30年的投资。这个问题在马来西亚尤为重要，因为其橡胶产量取决于小农。小农户约占天然橡胶产量的93％，此外，马来西亚橡胶土地面积的93％由小农拥有。这项研究产生的农业气候图将帮助小农户根据自己的具体位置决定是继续种植橡胶还是换成其他有价值的农作物。在本研究中，我们评估21世纪土地在橡胶种植方面的适宜性，并根据历史（1970–2000），早期（2010–2040），中期（2040–2070）和末期（2070–2100）的气候数据评估橡胶的生长预测期。我们使用 中间（2040–2070）和结束（2070–2100）预测期。我们使用 中间（2040–2070）和结束（2070–2100）预测期。我们使用橡胶树1.0用于橡胶树建模的静态模型，用于计算农业气候指数并估算所有研究时期的30年实际橡胶生长（围长）。我们发现，至少在2100年之前，气候变化预计将对马来西亚热带雨林中橡胶的适应性产生积极影响。到了降水和温度预计将显着增加的末期，对橡胶更加有利。霹雳州地区在早期，中期和末期的估计橡胶增幅最高，分别增长了16.3％，31.9％和39.4％。在所有地区中，预计Kelang是早期最适合种植橡胶的地区，因为其估计周长可达94.5 cm。与此同时，预计柔佛州是中后期种植橡胶的最佳地方，生长估计分别为97厘米和99.5厘米。我们指出，在马来西亚半岛现有的橡胶种植面积中，约有32％位于土地适合种植橡胶的第6类。