" 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,北京師范大學資源學院朱文泉說“如果植物凈初級生產力越高,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計數學模型及環境解析.植物生態學報, ( 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,由于氣候變化導致陸生植物的凈初級生產力增長了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力變化之間的聯系,植物凈初級生產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,高志強說氣候變化的諸多因素都會對植物的生長產生互動的和復雜的影響,依靠這三種“主要”氣候因素變化來對植物凈初級生產力進行測算還是很難的。
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衛星上進行全球變化研究的主要信息數據獲取設備,其數據作為noaa - avhrr的替代產品正逐漸被人們認識和關注,并已被應用到自然災害、土地覆蓋變化、全球生產力、生態環境、氣候變化、海洋等領域的動態監測當中,具有廣泛的應用前景。
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院地理科學與資源研究所首先提出的,這個模型試圖利用先進的格網生成技術,將城市、交通基礎設施等社會經濟因子和陸地數字高程( dem ) 、陸地植被凈第一性生產力( npp )等自然因子相結合,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 本文首先運用1981 - 2001年的統計資料(作物產量和各種途徑的農業投入數據) ,對沿海十省區農田生態系統碳源匯及凈碳匯進行了估算,并分析了其時空差異;然后運用1998年逐月ndvi數據通過建模對沿海地區農田生態系統npp進行了估算,并分析了npp分布與農田生態系統碳吸收的相關性;最后通過對農田生態系統碳源匯的影響因素分析,提出了不同的農田生態系統碳增匯減排技術。