" if the net primary productivity of a plant is high , it means the plant grows more healthily , " says lead author zhu wenquan of the college of resources at the university 該報告的第一作者,北京師范大學(xué)資源學(xué)院朱文泉說“如果植物凈初級生產(chǎn)力越高,這意味著植物生長得越健康。 ”
Jiang hong , apps michael j . zhang yanli , peng changhui and woodard paul m . , 1999 , modeling the spatial pattern of net primary productivity in chinese forests , ecological modeling 122 , 275 - 288 郭泉水,江洪,徐慶, 1999 .中國主要森林群落的植物生活型譜與氣候因子的統(tǒng)計數(shù)學(xué)模型及環(huán)境解析.植物生態(tài)學(xué)報, ( 1999增刊) 1 - 10
As a result , the net primary productivity of land plants in china grew by 11 . 5 per cent because of climate change , which the authors say is consistent with the global trend of an increase of about six per cent worldwide 最終,由于氣候變化導(dǎo)致陸生植物的凈初級生產(chǎn)力增長了11 . 5 % ,對此,該報告的作者說這與全球趨勢保持了一致? ?同期全球植物凈初級生產(chǎn)力增長率是6 % 。
Scientists at the beijing normal university studied the link between climate factors and changes in plants ' net primary productivity ? a term used to evaluate the net reserve energy plants need during growth ? between 1982 and 1999 北京師范大學(xué)的科研人員研究了在1982年到1999年期間氣候因素與植物凈初級生產(chǎn)力變化之間的聯(lián)系,植物凈初級生產(chǎn)力指的是植物在生長周期中的能量凈儲備值。
Referring to zhu ' s studies , gao says various aspects of climate change could combine to complicate the impact on plant growth , and it is difficult to associate a change in net primary productivity with variation of a single " major " climate factor 在提到朱文泉的研究時,高志強(qiáng)說氣候變化的諸多因素都會對植物的生長產(chǎn)生互動的和復(fù)雜的影響,依靠這三種“主要”氣候因素變化來對植物凈初級生產(chǎn)力進(jìn)行測算還是很難的。
Modis ( moderate resolution imaging spectroradiometer ) is an important data getting instrument of information onboard the terra and aqua satellites . these data as the substitute of noaa - avhrr data are familiar with people . the data have been mainly used in dynamic monitoring of natural disaster , changes in landscape and vegetation , global net primary productivity , ecological environment , climate changes , and ocean Modis傳感器是搭載在terra和aqua衛(wèi)星上進(jìn)行全球變化研究的主要信息數(shù)據(jù)獲取設(shè)備,其數(shù)據(jù)作為noaa - avhrr的替代產(chǎn)品正逐漸被人們認(rèn)識和關(guān)注,并已被應(yīng)用到自然災(zāi)害、土地覆蓋變化、全球生產(chǎn)力、生態(tài)環(huán)境、氣候變化、海洋等領(lǐng)域的動態(tài)監(jiān)測當(dāng)中,具有廣泛的應(yīng)用前景。
The spd model is made by the ins titute of geographical sciences and natural resources research of chinese academy of sciences . it combines social economic factors , such as city and transportation foundational facilities , with nature factors , for example the digital elevation model ( dem ) and net primary productivity ( npp ) of plants to simulate the spatial distribution of population density of china by the advanced grid generation technology 中國模擬人口密度模型是由中國科學(xué)院地理科學(xué)與資源研究所首先提出的,這個模型試圖利用先進(jìn)的格網(wǎng)生成技術(shù),將城市、交通基礎(chǔ)設(shè)施等社會經(jīng)濟(jì)因子和陸地數(shù)字高程( dem ) 、陸地植被凈第一性生產(chǎn)力( npp )等自然因子相結(jié)合,通過模型的反演,模擬某一時期的中國人口密度空間分布狀況。
Firstly , this dissertation estimated the size of carbon source ; sink and net carbon sink of farmland ecosystems in china costal regions ( including ten provinces ) with statistic data from 1981 to 2001 , which include data of crop yield and agricultural consumptions . then analyzed the temporal - spatial differences of carbon source , sink and net carbon sink of china costal farmland ecosystems . secondly , estimated npp ( net primary productivity ) of farmland ecosystems in china costal regions with per month noaa - avhrr ndvi ( normalized difference vegetation index ) data and estimation model 本文首先運(yùn)用1981 - 2001年的統(tǒng)計資料(作物產(chǎn)量和各種途徑的農(nóng)業(yè)投入數(shù)據(jù)) ,對沿海十省區(qū)農(nóng)田生態(tài)系統(tǒng)碳源匯及凈碳匯進(jìn)行了估算,并分析了其時空差異;然后運(yùn)用1998年逐月ndvi數(shù)據(jù)通過建模對沿海地區(qū)農(nóng)田生態(tài)系統(tǒng)npp進(jìn)行了估算,并分析了npp分布與農(nóng)田生態(tài)系統(tǒng)碳吸收的相關(guān)性;最后通過對農(nóng)田生態(tài)系統(tǒng)碳源匯的影響因素分析,提出了不同的農(nóng)田生態(tài)系統(tǒng)碳增匯減排技術(shù)。