摘要
基于近年中国西南频发的季节性旱灾事件,探讨了区域植被的水分适宜性。分析了区域性旱灾事件中蕴藏的重要科学问题——具有高耗水特性的桉树(Eucalyptus spp.)、橡胶树(Heveaspp.)人工林的生态需水是否适应于区域降水条件(或能否打破区域生态用水的供需平衡)进而导致旱害。同时分析了植被水分适宜性研究的现状与发展趋势,认为以植被生态需水计算为基础的植被水分适宜性研究进展缓慢且成果缺乏,作为水分适宜性评价基础的植被生态需水研究也存在一些问题。据此提出对云南省典型植被的水分适宜性及其生态需水与区域干旱的关系开展专项研究的建议。
On the basis of drought disaster occurred frequently in Southwest China in recent years, water suitability of regional vegetation was discussed. An important scientific issue concerned with the seasonal drought disaster was analyzed. The issue was whether could ecological water demand of Eucalyptus planta- tion and Hevea plantation be adapted to regional precipitation condition, or whether could ecological water demand of Eucalyptus plantation and Hevea plantation break the balance of supply and demand of regional ecological water use, and even lead to regional drought disaster. Research status and development trends in water suitability Of regional vegetation were analyzed. It was pointed out that no great progress and no sym- bolic achievement was gotten in research related to water suitability of vegetation that based on the calcula- tion of ecological water demand of vegetation. As for research on ecological water demand of vegetation, the basis for assessment of water suitability of vegetation, there are some problems left. Water suitability of typ- ical vegetation in Yunnan Province and relationship between ecological water demand of regional vegetation and regional drought disaster should be investigated.
出处
《水土保持通报》
CSCD
北大核心
2014年第4期301-307,共7页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金项目"云南省典型植被的水分适应性及其生态需水与区域旱灾的关系(31460191)"
"云南省典型人工植被的时空演变及其生态需水与区域性干旱的关系"(31270751)
"桉树-紫茎泽兰复合系统的形成机理与生态效应"(31160155)
云南大学"中青年骨干教师培养计划"(XT412003)
关键词
区域植被
水分适宜性
生态需水
中国西南
季节性旱灾
regional vegetation
water suitability
ecological water demand
Southwest China
seasonal droughtdisaster
