![](/fileadmin/_processed_/3/a/csm_Sanasilva_herobild_intro_79eeef4dc4.jpg)
Sanasilva forest health inventory ¶
We have monitored forest condition on a representative subset of the Swiss forest inventory network (level-I monitoring) since 1985. The main indicators we use in the Sanasilva Inventory are crown defoliation and mortality.
The size of the systematic sample grid has been progressively reduced over the years. Nowadays, we assess approximately 1,100 trees on a 16x16 km subgrid. This subgrid is part of the European "Level I" monitoring network that comprises 6,000 sample plots in 42 countries.
Comprehensive results of the Sanasilva inventory were published last in the 2015 Forest report. The main conclusions are that crown defoliation has significantly increased since 1985, whereas mortality has remained low.
We also summarize our results in the yearbook on forests and wood published in German and French by the Federal Office for the Environment FOEN and in the reports of the European network for Level-I Monitoring ICP-Forests.
The Sanasilva inventory was launched in the context of the forest decline debate. In the 1990s, however, it became obvious that this inventory would suffice neither to describe forest condition nor to explain the symptoms. This led to the creation in 1994 of the programme for long-term ecosystem research LWF (level-II monitoring), which now counts 19 sites all over Switzerland.
Sanasilva impression ¶
![sanasilva 1 Foto vom Berg](/fileadmin/_processed_/b/4/csm_sanasilva_1_ec4eb52c92.jpg)
![sanasilva 2](/fileadmin/_processed_/2/c/csm_sanasilva_2_4ca14dc833.jpg)
![sanasilva 3](/fileadmin/_processed_/4/8/csm_sanasilva_3_d6db0970d4.jpg)
![sanasilva 4](/fileadmin/_processed_/e/d/csm_sanasilva_4_f92b15564c.jpg)
![sanasilva 5](/fileadmin/_processed_/9/9/csm_sanasilva_5_268b56e940.jpg)
![sanasilva 6](/fileadmin/_processed_/0/4/csm_sanasilva_6_54f9d78768.jpg)
![sanasilva 7](/fileadmin/_processed_/5/e/csm_sanasilva_7_b7e80d80b0.jpg)
![sanasilva 8](/fileadmin/_processed_/b/a/csm_sanasilva_8_a9b7e11b0c.jpg)
![sanasilva 9](/fileadmin/_processed_/8/f/csm_sanasilva_9_82c8b0a72c.jpg)
![sanasilva 10](/fileadmin/_processed_/1/7/csm_sanasilva_10_2cf024fbb1.jpg)
![sanasilva 11](/fileadmin/_processed_/5/3/csm_sanasilva_11_6e399b4975.jpg)
![sanasilva 12](/fileadmin/_processed_/1/9/csm_sanasilva_12_cf01f8ce9a.jpg)
![sanasilva 13](/fileadmin/_processed_/0/e/csm_sanasilva_13_e996c1da57.jpg)
![sanasilva 14](/fileadmin/_processed_/a/1/csm_sanasilva_14_990860012b.jpg)
![sanasilva 15](/fileadmin/_processed_/c/2/csm_sanasilva_15_cdc57b4ab1.jpg)
![sanasilva 16](/fileadmin/_processed_/e/9/csm_sanasilva_16_f9862e1362.jpg)
![sanasilva 17](/fileadmin/_processed_/b/f/csm_sanasilva_17_636bb3f128.jpg)
![sanasilva 18](/fileadmin/_processed_/4/6/csm_sanasilva_18_d122e71a57.jpg)
![sanasilva 19](/fileadmin/_processed_/3/3/csm_sanasilva_19_e99fd0e2c0.jpg)
![sanasilva 20](/fileadmin/_processed_/9/5/csm_sanasilva_20_3bf81e9cda.jpg)
![sanasilva 21](/fileadmin/_processed_/7/7/csm_sanasilva_21_050291d379.jpg)
![sanasilva 22](/fileadmin/_processed_/b/2/csm_sanasilva_22_8be19addcc.jpg)
![sanasilva 23](/fileadmin/_processed_/7/e/csm_sanasilva_23_107b654eb3.jpg)
![sanasilva 24](/fileadmin/_processed_/3/9/csm_sanasilva_24_018328b13c.jpg)
![sanasilva 25](/fileadmin/_processed_/3/f/csm_sanasilva_25_d0c8cb13c8.jpg)
![sanasilva 26](/fileadmin/_processed_/b/1/csm_sanasilva_26_e17c3e5c95.jpg)
![sanasilva 27](/fileadmin/_processed_/9/8/csm_sanasilva_27_1a6557f5a4.jpg)
![sanasilva 28](/fileadmin/_processed_/8/d/csm_sanasilva_28_421acb1fea.jpg)
![sanasilva 29](/fileadmin/_processed_/5/9/csm_sanasilva_29_5336ea4210.jpg)
![sanasilva 30](/fileadmin/_processed_/d/3/csm_sanasilva_30_c0c36a4a22.jpg)
![sanasilva 31](/fileadmin/_processed_/7/f/csm_sanasilva_31_3c667d3db8.jpg)
![sanasilva 32](/fileadmin/_processed_/f/6/csm_sanasilva_32_329cc49094.jpg)
![sanasilva 33](/fileadmin/_processed_/c/6/csm_sanasilva_33_8a325a4d35.jpg)
![sanasilva 34](/fileadmin/_processed_/9/4/csm_sanasilva_34_fccf569685.jpg)
![sanasilva 35](/fileadmin/_processed_/5/1/csm_sanasilva_35_ee64c486e6.jpg)
![sanasilva 36](/fileadmin/_processed_/8/1/csm_sanasilva_36_0827b03ae0.jpg)
![sanasilva 37](/fileadmin/_processed_/2/d/csm_sanasilva_37_0982a4844c.jpg)
![sanasilva 38](/fileadmin/_processed_/5/f/csm_sanasilva_38_da7a1f83e7.jpg)
![sanasilva 39](/fileadmin/_processed_/8/6/csm_sanasilva_39_bb03ac8b75.jpg)
![sanasilva 40](/fileadmin/_processed_/d/1/csm_sanasilva_40_1a4c6d3dba.jpg)
![sanasilva 41](/fileadmin/_processed_/8/b/csm_sanasilva_41_091b5dbf1e.jpg)
![sanasilva 42](/fileadmin/_processed_/4/9/csm_sanasilva_42_8cae9ab937.jpg)
![sanasilva 43](/fileadmin/_processed_/4/5/csm_sanasilva_43_63c621ae30.jpg)
![sanasilva 44](/fileadmin/_processed_/c/f/csm_sanasilva_44_c304c50a57.jpg)
![sanasilva 45](/fileadmin/_processed_/f/c/csm_sanasilva_45_50d829ca0d.jpg)
![sanasilva 46](/fileadmin/_processed_/8/7/csm_sanasilva_46_9f0aab0ade.jpg)
![sanasilva 47](/fileadmin/_processed_/6/b/csm_sanasilva_47_a6e217713e.jpg)
![sanasilva 48](/fileadmin/_processed_/1/0/csm_sanasilva_48_c5cdda73cc.jpg)
![sanasilva 49](/fileadmin/_processed_/f/5/csm_sanasilva_49_c75312b812.jpg)
![sanasilva 50](/fileadmin/_processed_/9/5/csm_sanasilva_50_f7d9e6ecf3.jpg)
Contacts ¶
Publications ¶
- Large-scale forest condition monitoring: ICP Forests Level I