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China and India lead in greening of the world through land-use management.

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Abstract

Satellite data show increasing leaf area of vegetation due to direct (human land-use management) and indirect factors (climate change, CO2fertilization, nitrogen deposition, recovery from natural disturbances, etc.). Among these, climate change and CO2 fertilization effect seem to be the dominant drivers. However, recent satellite data (2000-2017) reveal a greening pattern that is strikingly prominent in China and India, and overlapping with croplands world-wide. China alone accounts for 25% of the global net increase in leaf area with only 6.6% of global vegetated area. The greening in China is from forests (42%) and croplands (32%), but in India is mostly from croplands (82%) with minor contribution from forests (4.4%). China is engineering ambitious programs to conserve and expand forests with the goal of mitigating land degradation, air pollution and climate change. Food production in China and India has increased by over 35% since 2000 mostly due to increasing harvested area through multiple cropping facilitated by fertilizer use and surface/ground-water irrigation. Our results indicate that the direct factor is a key driver of the “Greening Earth”, accounting for over a third, and likely more, of the observed net increase in green leaf area. They highlight the need for realistic representation of human land-use practices in Earth system models.

Chen C, Park T, Wang X, Piao S, Xu B, Chaturvedi RK, Fuchs R, Brovkin V, Ciais P, Fensholt R, Tømmervik H, Bala G, Zhu Z, Nemani RR, Myneni RB. China and India lead in greening of the world through land-use management. Nat Sustain.2019;2:122-129. doi: 10.1038/s41893-019-0220-7. Epub 2019 Feb 11.

30778399; PubMed Central PMCID: PMC6376198.China and India lead in greening of the world
through land-use management
ChiChen
1
*, TaejinPark
1
, XuhuiWang
2
, ShilongPiao
2
, BaodongXu
1,3
, RajivK.Chaturvedi
4
,
RichardFuchs
5
, VictorBrovkin
6
, PhilippeCiais
7
, RasmusFensholt
8
, HansTømmervik
9
,
GovindasamyBala
10
, ZaichunZhu
11
, RamakrishnaR.Nemani
12
and RangaB.Myneni
1
Satellite data show increasing leaf area of vegetation due to direct factors (human land-use management) and indirect factors
(such as climate change, CO
2
fertilization, nitrogen deposition and recovery from natural disturbances). Among these, climate
change and CO
2
fertilization effects seem to be the dominant drivers. However, recent satellite data (2000–2017) reveal a
greening pattern that is strikingly prominent in China and India and overlaps with croplands world-wide. China alone accounts
for 25% of the global net increase in leaf area with only 6.6% of global vegetated area. The greening in China is from forests
(42%) and croplands (32%), but in India is mostly from croplands (82%) with minor contribution from forests (4.4%). China is
engineering ambitious programmes to conserve and expand forests with the goal of mitigating land degradation, air pollution
and climate change. Food production in China and India has increased by over 35% since 2000 mostly owing to an increase in
harvested area through multiple cropping facilitated by fertilizer use and surface- and/or groundwater irrigation. Our results
indicate that the direct factor is a key driver of the ‘Greening Earth’, accounting for over a third, and probably more, of the
observed net increase in green leaf area. They highlight the need for a realistic representation of human land-use practices in
Earth system modelsChina and India lead in greening of the world
through land-use management
ChiChen
1
*, TaejinPark
1
, XuhuiWang
2
, ShilongPiao
2
, BaodongXu
1,3
, RajivK.Chaturvedi
4
,
RichardFuchs
5
, VictorBrovkin
6
, PhilippeCiais
7
, RasmusFensholt
8
, HansTømmervik
9
,
GovindasamyBala
10
, ZaichunZhu
11
, RamakrishnaR.Nemani
12
and RangaB.Myneni
1
Satellite data show increasing leaf area of vegetation due to direct factors (human land-use management) and indirect factors
(such as climate change, CO
2
fertilization, nitrogen deposition and recovery from natural disturbances). Among these, climate
change and CO
2
fertilization effects seem to be the dominant drivers. However, recent satellite data (2000–2017) reveal a
greening pattern that is strikingly prominent in China and India and overlaps with croplands world-wide. China alone accounts
for 25% of the global net increase in leaf area with only 6.6% of global vegetated area. The greening in China is from forests
(42%) and croplands (32%), but in India is mostly from croplands (82%) with minor contribution from forests (4.4%). China is
engineering ambitious programmes to conserve and expand forests with the goal of mitigating land degradation, air pollution
and climate change. Food production in China and India has increased by over 35% since 2000 mostly owing to an increase in
harvested area through multiple cropping facilitated by fertilizer use and surface- and/or groundwater irrigation. Our results
indicate that the direct factor is a key driver of the ‘Greening Earth’, accounting for over a third, and probably more, of the
observed net increase in green leaf area. They highlight the need for a realistic representation of human land-use practices in
Earth system models



Source: http://gmopundit.blogspot.com/2019/08/china-and-india-lead-in-greening-of.html

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