商丘师范学院学报
商丘師範學院學報
상구사범학원학보
JOURNAL OF SHANGQIU TEACHERS COLLEGE
2013年
6期
69-73
,共5页
贺振%王珍%厉玲玲%贺俊平
賀振%王珍%厲玲玲%賀俊平
하진%왕진%려령령%하준평
MODIS%净初级生产力%时空变化%黄河流域
MODIS%淨初級生產力%時空變化%黃河流域
MODIS%정초급생산력%시공변화%황하류역
MODIS%net primary production%temporal and spatial variation%the Yellow River Basin
利用 EOS/MODIS 遥感数据,对2000~2011年间黄河流域植被净初级生产力的时空变化进行分析.结果表明:黄河流域植被 NPP 年平均值在2000~2011年期间总体呈增加趋势,从2000年的210.5 g C/(m 2? a)增加到2011年的230.0 g C/(m 2? a);黄河流域植被 NPP 12 a 平均值从北向南呈逐步增加趋势,NPP 平均值变化范围为4.5~1129.5 g C/(m 2? a),均值为236.5 g C/(m 2? a),且主要集中在0~200 g C/(m 2? a)和200~400 g C/(m 2? a)之间,分别占研究区总面积的42.2%和42.4%;黄河流域植被年 NPP 在12 a 间的整体变化表现为增加态势,NPP 变化趋势为增加的主要以轻微和中度增加为主,分别占流域总面积的40.26%和14.56%;NPP 基本不变的区域占流域总面积的38.37%;NPP 变化趋势为减少的主要以轻微减少为主,约占流域总面积的3.77%.总之,研究区 NPP 增加的面积远高于 NPP 减少的面积,表明黄河流域生态环境在不断改善.
利用 EOS/MODIS 遙感數據,對2000~2011年間黃河流域植被淨初級生產力的時空變化進行分析.結果錶明:黃河流域植被 NPP 年平均值在2000~2011年期間總體呈增加趨勢,從2000年的210.5 g C/(m 2? a)增加到2011年的230.0 g C/(m 2? a);黃河流域植被 NPP 12 a 平均值從北嚮南呈逐步增加趨勢,NPP 平均值變化範圍為4.5~1129.5 g C/(m 2? a),均值為236.5 g C/(m 2? a),且主要集中在0~200 g C/(m 2? a)和200~400 g C/(m 2? a)之間,分彆佔研究區總麵積的42.2%和42.4%;黃河流域植被年 NPP 在12 a 間的整體變化錶現為增加態勢,NPP 變化趨勢為增加的主要以輕微和中度增加為主,分彆佔流域總麵積的40.26%和14.56%;NPP 基本不變的區域佔流域總麵積的38.37%;NPP 變化趨勢為減少的主要以輕微減少為主,約佔流域總麵積的3.77%.總之,研究區 NPP 增加的麵積遠高于 NPP 減少的麵積,錶明黃河流域生態環境在不斷改善.
이용 EOS/MODIS 요감수거,대2000~2011년간황하류역식피정초급생산력적시공변화진행분석.결과표명:황하류역식피 NPP 년평균치재2000~2011년기간총체정증가추세,종2000년적210.5 g C/(m 2? a)증가도2011년적230.0 g C/(m 2? a);황하류역식피 NPP 12 a 평균치종북향남정축보증가추세,NPP 평균치변화범위위4.5~1129.5 g C/(m 2? a),균치위236.5 g C/(m 2? a),차주요집중재0~200 g C/(m 2? a)화200~400 g C/(m 2? a)지간,분별점연구구총면적적42.2%화42.4%;황하류역식피년 NPP 재12 a 간적정체변화표현위증가태세,NPP 변화추세위증가적주요이경미화중도증가위주,분별점류역총면적적40.26%화14.56%;NPP 기본불변적구역점류역총면적적38.37%;NPP 변화추세위감소적주요이경미감소위주,약점류역총면적적3.77%.총지,연구구 NPP 증가적면적원고우 NPP 감소적면적,표명황하류역생태배경재불단개선.
@@@@Spatio -temporal distribution and change trend of Net Primary Production was analyzed based on MOD17A3 data form 2000 to 2011 in Yellow River Basin.Average method and slope of the linear regression were used to unravel spatial and temporal changes of NPP .The results show that the annual average NPP presents the increasing tendency in Yellow River Basin from 2000 to 2011, increasing from 210.5 gC/(m 2 ? a) in 2000 to 230.0 g C/(m 2? a) in 2011.The average NPP within 12 years in southern Yellow River Basin is above northern , and change range between 4.5 and 1129.5 g C/(m 2 ? a), mean value 236.5 gC/(m 2 ? a).The average NPP within 12 years mainly concentrates at 0 ~200 gC/(m 2? a) and 200 ~400 g C/(m 2? a), accounting for 42.2%and 42.4% of the basin area respectively.The increased NPP area focuses on slightly increasing and moderate increasing, accounting for about 40.26% and 14.56% of the Yellow River Basin respectively.The stable area with no change of NPP accounts for about 38.37% of the study area.The decreased NPP area focuses on slightly decreasing, and accounts for about 3.77% of the Yellow River Basin.In short, area with increased NPP exceeds decreased area, and this makes it clear that environmental quality is improved in the Yellow River basin since 2000.
