亚热带资源与环境学报
亞熱帶資源與環境學報
아열대자원여배경학보
JOURNAL OF SUBTROPICAL RESOURCES AND ENVIRONMENT
2011年
3期
1-8
,共8页
茶园%生态系统%氟%生物地球化学循环
茶園%生態繫統%氟%生物地毬化學循環
다완%생태계통%불%생물지구화학순배
tea garden%ecosystem%Fluorine%biogeochemical cycle
根据近年作者及相关研究成果,提出一般茶园(非F污染区,非高F地质背景区)生态系统F的生物地球化学循环模型,估算茶园生态系统各子系统F的库容和库之间的F流量,分析茶园生态系统F的生物地球化学特征.结果表明:1)茶园生态系统F的惰性库:调节库:活动库为239:4:1,活动库占总库容的比例高达0.41%,其比例是非常高的;2)该生态系统F的外循环是一个正平衡循环,F的收入与支出比为2:1,同时地表径流的F支出大于地下径流的F支出;3)由于茶树具有很强的从土壤摄取F的能力,摄取的F绝大部分(98%)汇集于叶上,特别是老叶上,且部分易被雨水淋出,因而通过透冠流和枯枝落叶形成很大的F流量,分别达10.5k·hm^-2·a^-1和8.5kg·hm^-2·a^-1,内循环流量达19.95kg·hm^-2·a^-1,为活动库库容的3.6倍,使活动库具有很高的更新速率;4)茶园生态系统F的生物地球化学循环伴随着系统中F的活化、有机化和生物积累过程.
根據近年作者及相關研究成果,提齣一般茶園(非F汙染區,非高F地質揹景區)生態繫統F的生物地毬化學循環模型,估算茶園生態繫統各子繫統F的庫容和庫之間的F流量,分析茶園生態繫統F的生物地毬化學特徵.結果錶明:1)茶園生態繫統F的惰性庫:調節庫:活動庫為239:4:1,活動庫佔總庫容的比例高達0.41%,其比例是非常高的;2)該生態繫統F的外循環是一箇正平衡循環,F的收入與支齣比為2:1,同時地錶徑流的F支齣大于地下徑流的F支齣;3)由于茶樹具有很彊的從土壤攝取F的能力,攝取的F絕大部分(98%)彙集于葉上,特彆是老葉上,且部分易被雨水淋齣,因而通過透冠流和枯枝落葉形成很大的F流量,分彆達10.5k·hm^-2·a^-1和8.5kg·hm^-2·a^-1,內循環流量達19.95kg·hm^-2·a^-1,為活動庫庫容的3.6倍,使活動庫具有很高的更新速率;4)茶園生態繫統F的生物地毬化學循環伴隨著繫統中F的活化、有機化和生物積纍過程.
근거근년작자급상관연구성과,제출일반다완(비F오염구,비고F지질배경구)생태계통F적생물지구화학순배모형,고산다완생태계통각자계통F적고용화고지간적F류량,분석다완생태계통F적생물지구화학특정.결과표명:1)다완생태계통F적타성고:조절고:활동고위239:4:1,활동고점총고용적비례고체0.41%,기비례시비상고적;2)해생태계통F적외순배시일개정평형순배,F적수입여지출비위2:1,동시지표경류적F지출대우지하경류적F지출;3)유우다수구유흔강적종토양섭취F적능력,섭취적F절대부분(98%)회집우협상,특별시로협상,차부분역피우수림출,인이통과투관류화고지락협형성흔대적F류량,분별체10.5k·hm^-2·a^-1화8.5kg·hm^-2·a^-1,내순배류량체19.95kg·hm^-2·a^-1,위활동고고용적3.6배,사활동고구유흔고적경신속솔;4)다완생태계통F적생물지구화학순배반수착계통중F적활화、유궤화화생물적루과정.
Based on the data from recent researches, a model on the biogeochemical cycle of F in tea garden ecosystem was conceptualized, and the capacity of F pools, the flows of F between the components and characteristics of the ecosystem were analyzed. Results indicated: 1 ) The capacity proportions of the inert pool, regulate pool and active pool of F in the ecosystem are 239 :4 : 1. The active pool occupies a great proportion of 0. 41% in total F of the system; 2) The outside cycle of F shows a positive balance, the proportion of receipts to expenditures of F amounts to 2 : 1, and the expenditure of F is more through surface water than through groundwater; 3 ) There is a strong inner cycle of F (19.95 kg. hm-2 .a-1) in the tea garden ecosystem, because F is absorbed largely from soil by tea plant (18.62 kg .hm-2 . a-1) and stored mainly in the leaves (98%), especially in old leaves, but largely returns to soil by leaching rainwater ( 10. 49 kg . hm-2 . a-1 ) , and by dead branches and leaves (8.54 kg . hm -2 . a-1 ) , the amount of F in inner cycle capacity of active pool, leading equals to a fast replacement rate of F in the chemical cycle of F is accompanied by processes such as F activation, compound form and F biological accumulation in tea garden ecosystem. 3.6 times as much as the F- active pool; 4) The biogeo- F transformation into organic